Auto Recall Watch
U.S. public vehicle records

2023 Mercedes-Benz C 300 problems and owner complaints

Explore the records behind recurring owner reports.

Key facts

22 owner complaints analyzed

9 distinct recall campaigns

3,900 mi median reported failure mileage

Scope: 2023 model year. Data updated: . 7 complaints include usable failure mileage. View data status.

Owner-reported patterns

Most common problems

Forward Collision Avoidance: Automatic Emergency Braking is the most frequently named component, appearing in 7 of 22 complaints (31.8%). A complaint can name multiple components.

Recurring terms in complaint narratives
TopicMatching reportsShare of complaints
Braking behavior627.3%
Electrical and battery issues313.6%
Transmission and shifting14.5%
Engine operation14.5%
Steering behavior14.5%
Fuel system concerns14.5%

Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.

Component breakdown

Number of unique complaints naming each component. Top eight shown.

Forward Collision Avoidance: Automatic Emergency Braking
7
Electrical System
5
Service Brakes
5
Forward Collision Avoidance: Adaptive Cruise Control
4
Unknown Or Other
4
Engine
2
Forward Collision Avoidance: Warnings
2
Tires:Sidewall
2
Component breakdown data
CategoryCount
Forward Collision Avoidance: Automatic Emergency Braking7
Electrical System5
Service Brakes5
Forward Collision Avoidance: Adaptive Cruise Control4
Unknown Or Other4
Engine2
Forward Collision Avoidance: Warnings2
Tires:Sidewall2

Forward Collision Avoidance: Automatic Emergency Braking: 7; Electrical System: 5; Service Brakes: 5; Forward Collision Avoidance: Adaptive Cruise Control: 4; Unknown Or Other: 4; Engine: 2; Forward Collision Avoidance: Warnings: 2; Tires:Sidewall: 2

Reported problems by failure mileage

Complaint counts in mileage bands. These are not failure rates per vehicle or mile.

Under 25,000
6
25,000 to 49,999
1
50,000 to 74,999
0
75,000 to 99,999
0
100,000 to 149,999
0
150,000 and above
0
Reported problems by failure mileage data
CategoryCount
Under 25,0006
25,000 to 49,9991
50,000 to 74,9990
75,000 to 99,9990
100,000 to 149,9990
150,000 and above0

Under 25,000: 6; 25,000 to 49,999: 1; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0

Under 25,000 miles has the most reports with usable mileage (6). 15 complaints have missing, zero or invalid mileage.

Complaints over time

Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.

2023
10
2024
7
2025
5
Complaints over time data
CategoryCount
202310
20247
20255

2023: 10; 2024: 7; 2025: 5

Pattern summary

Forward Collision Avoidance: Automatic Emergency Braking leads the component reports. Braking behavior appears in 6 complaint narratives. Electrical and battery issues appears in 3 complaint narratives. Transmission and shifting appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.

Calculated from recorded counts. An AI narrative has not been published for this selection.

Complaint evidence

Examples provide context, not a representative sample or a verified diagnosis.

Owner report 11520942 · 2023-05-08 (May 8, 2023)

The contact owns a 2023 Mercedes C300. The contact stated that while traveling over a pedestrian crosswalk, the emergency braking mode was engaged. The accelerator pedal was applied but the vehicle failed to accelerate. The vehicle went into restricted mode. A Hyundai Elantra crashed into the rear of the vehicle. The driver in the Hyundai stated that the brake lights were not illuminated. There was no air bag deployment or fire. A police report was filed. The contact who was occupying the front passenger seat sustained an injury to her neck…

Owner-reported narrative. 2,000 miles reported. Look up ODI 11520942 at NHTSA ↗

Owner report 11523001 · 2023-05-20 (May 20, 2023)

First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. Electrical: intermittently, the door/trunk lock, side mir…

Owner-reported narrative. Look up ODI 11523001 at NHTSA ↗

Owner report 11555944 · 2023-11-19 (November 19, 2023)

The above multiple problems/parts at issue. To include Other/I am not sure. Started at or approximately February 2023. The (Automatic Folding Side View Folding Mirrors before resolution) Malfunctioned 3 separate times before being fixed. During that time the (Cooling System Malfunction Reduced Drive Performance Service Required), displayed 2 separate Unknown Dates on the Dashboard Screen. The MB Dealership Service Diagnostic Check made was not Able to Detect the Trouble and was Never Fixed). On Monday, 08/21/2023, by (USPS) delivered a Merc…

Owner-reported narrative. Look up ODI 11555944 at NHTSA ↗

Owner report 11540331 · 2023-08-23 (August 23, 2023)

The contact owns a 2023 Mercedes-Benz C300. The contact stated while reversing, the check engine warning light illuminated and the vehicle lost motive power, stalled and shutoff. The contact was able to restart the vehicle, but had the vehicle towed to the dealer. The dealer stated that no cause for the failure was found but updated the software. The failure reoccurred. The vehicle was taken back to the dealer and the contact was informed that the water pump needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted…

Owner-reported narrative. 3,900 miles reported. Look up ODI 11540331 at NHTSA ↗

Owner report 11544088 · 2023-09-12 (September 12, 2023)

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

Owner-reported narrative. 6,000 miles reported. Look up ODI 11544088 at NHTSA ↗

Explore the data

Vehicle analysis explorer

Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.

Data completeness

22 unique complaints in this selection. Analysis snapshot: 2026-10-01.

31.8%Usable mileage7 / 22 records
100.0%Valid incident date22 / 22 records
100.0%Valid filing date22 / 22 records
100.0%Ordered incident and filing dates22 / 22 records

Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.

Problems by model year

Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.

Component complaint heatmap
Component2017201820192020202120222023202420252026
Engine
7735.6%
ODI 10978794

"TAKATA RECALL" I HAD MY 2017 MERCEDES BENZ C300 FIR ONLY A FEW MONTHS AND I HAVE EXPERIENCE 4 ENCOUNTERS AS TO WHERE MY VEHICLE WOULDNT START BACK UP WHILE SITTING INSIDE OF MY VEHICLE FOR AT LEAST 2 TO 3 MINS ITS LIKE BEING LOCKED INSIDE OF MY OWN CAR EVERYTHING COMPLETELY SHUTS DOWN THE ENGINE NOR PUSH START WOULDNT WORK MY CAR IS ALWAYS PARKED FOR SMALL PERIODS OF TIME WGEN THIS INCIDENT TOOK PLACE I TOOK IT OVER TO THE MERCEDES-BENZ DEALER AND I WAS TOLD MY CAR IS NEW AND IT DOES THAT TIME TO TIME

Look up ODI 10978794 at NHTSA ↗

3434.3%
ODI 11257284 · 14,000 mi

TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ C300. WHILE OPERATING THE VEHICLE, THE CONTACT NOTICED A BURNT CRAYON ODOR INSIDE THE VEHICLE. THE ODOR MADE IT DIFFICULT TO BREATHE INSIDE THE VEHICLE. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF GOLDENS BRIDGE (321 NY-22, GOLDENS BRIDGE, NY 10526), BUT THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 14,000.

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1724.6%
ODI 11220826 · 1,700 mi

TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ C300W. THE CONTACT PURCHASED THE VEHICLE ON APRIL 6, 2019. ON APRIL 10, 2019 HE TOOK THE VEHICLE BACK TO THE DEALER (MERCEDES-BENZ OF SARASOTA, 4754 CLARK RD, SARASOTA, FL 34233, [phone removed]) BECAUSE IT SHOOK VIOLENTLY WHILE DRIVING AND THE ENGINE FELT LIKE IT WAS LOSING POWER AT 20 MPH. ALSO, AN ABNORMAL NOISE WAS HEARD. THE DEALER STATED THAT THE FAILURES WERE NOT ABNORMAL. THE DEALER TEST DROVE THE VEHICLE WITH THE WINDOWS UP AND COULD NOT REPLICATE THE FAILURES; HOWEVER, THEY STATED THAT THE NOI…

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824.2%
ODI 11382939 · 55,000 mi

MY 2016 C300 (IN-LINE 4 TURBO, "PETROL" WITH 241HP) AT 55K MILES HAD 1ST CYLINDER CRACKED WHILE DRIVING ON HIGHWAY, AND MY CAR IS OUT OF WARRANTY. I TALKED TO MY DEALERSHIP AND THE CORPORATE SEPARATELY. THE DEALERSHIP WOULD COVER THE COST OF THE PARTS WHETHER THE ENGINE NEEDS REPLACEMENT OR NOT, AS I BOUGHT MY CAR THERE NEW AND HAVE BEEN USING THEM THROUGH PREPAID MAINTENANCE. I DECIDED TO FIX THE CAR AND PAY THEM PRE-ARRANGED LABOR. BUT HERE IS THE RESPONSE FROM THE CORPORATE: THANK YOU FOR YOUR EMAIL TO MERCEDES-BENZ USA, ALTHOUGH WE R…

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857.1%
ODI 11525102

Piston Connecting Rod broke and left the engine making holes in both sides of the block; Mercedes Benz rejected any responsibility because the car has a branded title. Currently a new engine (brand new) is being installed, my concern is that what will happen if the new engine has the same defective part and blew up again.

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28.0%
ODI 11527619

Throughout the year, the car had many issues, the blind spot sensors and glass sensors didn't work, and it constantly showed that the stop/start system wasn't working. Twice, the car turned off by itself at a stoplight. Since everything is controlled through the car's large monitor, including the navigation, air conditioning, and all other functions, the monitor frequently shut off and it was necessary to turn it off and on again, or wait until the next day for it to work again. The scariest incident happened during a heavy rainstorm. I was dri…

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29.1%
ODI 11540331 · 3,900 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while reversing, the check engine warning light illuminated and the vehicle lost motive power, stalled and shutoff. The contact was able to restart the vehicle, but had the vehicle towed to the dealer. The dealer stated that no cause for the failure was found but updated the software. The failure reoccurred. The vehicle was taken back to the dealer and the contact was informed that the water pump needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted…

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218.2%
ODI 11692765

On Friday [XXX] at approximately [XXX]. My wife and I were driving our 2024 C-Class 300 (~8,000 miles on this vehicle) on [XXX] and entering the intersection of [XXX]. Riverside, CA 92506 when all of sudden the car just died (the engine stopped running, pushing the gas pedal with no power) and all the dashboard lights came on flashing like crazy. This incident paced my wife and I in a very venerable bad not safe situation. If there was any traffic at in this intersection at that moment it would have been a bad situation. I called MB Walter's…

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00.0%

No examples available for this selection.

00.0%

No examples available for this selection.

Unknown Or Other
3415.7%
ODI 10934527 · 5 mi

SUNROOF EXPLOSION TOOK PLACE IN TRANSIT TO DELIVERY TO MY HOME IN CENTERVILLE, OHIO FROM HOUSTON, TEXAS. IT WAS STATIONARY INSIDE OF ENCLOSED TRANSIT VEHICLE.

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2020.2%
ODI 11163276 · 5,000 mi

FORWARD COLLISON SYSTEM ($1700 OPTION) AEB, DOES NOT WORK AS DESCRIBED IN MB LITERATURE OR WEBSITE. IN MY OPINION, THE FORWARD COLLISION AVOIDANCE SYSTEM (AEB) IN MY 7 MO. OLD 2018 MERCEDES C300 SIMPLY DOES NOT WORK. I SPECIAL ORDERED THE CAR WITH THE 997 PKG THAT INCLUDES, DRIVER ASSISTANCE, BAS+, AND DISTRONIC THE MB MANUAL STATES: 'IF ACTIVE BRAKE ASSIST DETECTS THAT THERE IS A RISK OF COLLISION, YOU WILL BE WARNED VISUALLY AND ACOUSTICALLY. IF YOU DO NOT REACT AUTONOMOUS BRAKING CAN BE INITIATED IN CRITICAL SITUATIONS.' AND FURTHER THAT…

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811.6%
ODI 11291475 · 11,550 mi

THE PANORAMA SUNROOF EXPLODED, NO OTHER CARS NEAR ME, NO ROCK HIT IT NO BIG BUMP IN THE ROAD, IT JUST EXPLODED...WAS TRAVELING AT NORMAL HIGHWAY SPEED, AND IT SOUNDED LIKE THE CAR HAD EXPLODED, VERY SCARY, AND IF THE INSIDE COVER HAD NOT BEEN CLOSED WOULD HAVE HAD GLASS SHARDS RAIN DOWN ON ME AND POSSIBLE GET IN MY EYES...MERCEDES NEEDS TO ADDRESS THIS PROBLEM RIGHT AWAY BEFORE PEOPLE GET INTO ACCIDENTS WHEN THIS HAPPENS.

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515.2%
ODI 11385957 · 1,000 mi

ON A NUMBER OF OCCASIONS, I HAVE RECEIVED AN AUDITABLE WARNING, AND A RED LIGHT ON THE DASH THAT DISAPPEARS AS QUICKLY AS IT HAPPENS. I CANNOT CONTRIBUTE ANY CAUSE FOR THE WARNING AND THERE ISN'T ANY RESIDUAL INFORMATION ABOUT THE SOURCE OF THE WARNING.

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00.0%

No examples available for this selection.

28.0%
ODI 11478169

There have been two complete failures of the control module /screen in the center dash of the vehicle which operates all vehicle features and some key safety features. The screen simply ceases operation and shuts down all controls for the vehicle. The first incident occurred shortly after purchasing the vehicle new in June 2022 and then again on 8/7/22

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418.2%
ODI 11523001

First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. Electrical: intermittently, the door/trunk lock, side mir…

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327.3%
ODI 11588272

The vehicle was in drive, as I was turning right, the vehicle shifted from p(park) to n(netural) on the roadway. The car would not allow me to shift back to drive. I had to literally turn the car off and then back on in the middle of the road in order to put it back in drive Thankfully, there was not a vehicle nearby at the time, which could have caused a major accident or lost of life. At the time there was not a warning message at the time. Three days later tire pressure warning with fluctuating numbers occurred. I have only had this ve…

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125.0%
ODI 11741578

The panoramic sunroof unexpectedly shattered while the vehicle was parked in my driveway overnight. There was no collision, impact, weather event, vandalism, or any other external cause that could explain the failure. The damaged sunroof remains available for inspection upon request, and security camera footage from my property shows no outside influence that could have caused the glass to break. The unexpected failure of the panoramic sunroof created a significant safety risk. Had this occurred while I was driving, shattered glass could have …

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00.0%

No examples available for this selection.

Electrical System
3013.9%
ODI 10949803 · 8,000 mi

VEHICLE HORN WILL NOT FUNCTION WHEN IGNITION SWITCH IS IN OFF POSITION.

Look up ODI 10949803 at NHTSA ↗

1010.1%
ODI 11257284 · 14,000 mi

TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ C300. WHILE OPERATING THE VEHICLE, THE CONTACT NOTICED A BURNT CRAYON ODOR INSIDE THE VEHICLE. THE ODOR MADE IT DIFFICULT TO BREATHE INSIDE THE VEHICLE. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF GOLDENS BRIDGE (321 NY-22, GOLDENS BRIDGE, NY 10526), BUT THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 14,000.

Look up ODI 11257284 at NHTSA ↗

1217.4%
ODI 11267955

TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ C300W4. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 19V586000 (ELECTRICAL SYSTEM). THE CONTACT STATED THAT MERCEDES-BENZ OF CALDWELL (LOCATED AT 1230 BLOOMFIELD AVE, WEST CALDWELL, NJ 07006, [phone removed]) EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS NOT NOTIFIED. THE PART WAS NOT AVAILABLE FOR THE REPAIR. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.

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39.1%
ODI 11418528 · 6,000 mi

The contact owns a 2020 Mercedes-Benz C300. The contact stated that her son was driving at an undisclosed speed when another vehicle's muffler detached and crashed into the undercarriage of the contact's vehicle. The front driver and passenger side tires exploded and fractured the rims. The contact stated that the vehicle's alert system failed to warn her son of the incoming object which resulted in the collision. The contact's son did not receive medical attention. A police report was filed. The vehicle was towed to the dealer and repaired. Th…

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17.1%
ODI 11568290

First day leasing the vehicle within 6 hours lights malfunction and malfunction warning on dash to seek workshop, vehicle was taken for inspection to original dealer (Mercedes Benz of Bakersfield). During inspection I added additional concerning complaints about passenger door not closing correctly/wind noise seeping through when closed, and hood not closing promptly. One month into leasing vehicle passenger window malfunction, took for inspection and repair to original dealer (MBofBakersfield). Concerned with caution for me, my family, and fr…

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728.0%
ODI 11478169

There have been two complete failures of the control module /screen in the center dash of the vehicle which operates all vehicle features and some key safety features. The screen simply ceases operation and shuts down all controls for the vehicle. The first incident occurred shortly after purchasing the vehicle new in June 2022 and then again on 8/7/22

Look up ODI 11478169 at NHTSA ↗

522.7%
ODI 11523001

First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. Electrical: intermittently, the door/trunk lock, side mir…

Look up ODI 11523001 at NHTSA ↗

436.4%
ODI 11576712

Within the first week of ownership (delivery on 1/15/24), the car's parking and/or front collision sensors started malfunctioning on a regular basis. The sensors repeatedly gave off false alerts when the car would approach intersections even though no obstacles were in front of, or behind, the car. The false alerts were quite startling and they consisted of loud alarms and warning images in both the driver's display and the car's heads up display. The repeated false alarms posed a significant safety hazard because they initially caused me to…

Look up ODI 11576712 at NHTSA ↗

125.0%
ODI 11725129

After driving the 2025 c300 sedan and leaving it parked for an hour or two, I come back to the car and turn it on. Neither the central screen or drivers screen were operable. The engine, interior lighting, sounds, and other systems were working however all the screens were completely dead. The car had no speedometer, gear selection, park brake, A/C control, or any function. This is the second time it has happened first on 02/12/2026 and then today on 03/17/2026. After locking the car and leaving it alone for an hour, functions restart normally.…

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00.0%

No examples available for this selection.

Fuel/Propulsion System
3013.9%
ODI 11279530 · 55,000 mi

TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C300. WHEN THE CONTACT STARTED THE VEHICLE WITH THE MOBILE APP, SHE NOTICED A FUEL ODOR EMITTING FROM THE VEHICLE. WHEN THE VEHICLE WAS STARTED MANUALLY, THE ODOR WAS NOT PRESENT. THE CONTACT TOOK THE VEHICLE TO PARK PLACE MOTORCARS DALLAS (LOCATED AT 6113 LEMMON AVE, DALLAS, TX 75209, [phone removed]) WHERE IT WAS DIAGNOSED THAT THE FUEL HOSE WAS LEAKING AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 55,000.

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99.1%
ODI 11446178 · 62,000 mi

CYLINDER 1 SPARK PLUGS IS DAMAGED DUE TO PISTON DAMAGE, HOLE IN PISTON. IF EXTRA DAMAGE IS FOUND ON TEAR DOWN, COMPLETE ENGINE REPLACEMENT. This is direct from the repair facilities reports. While driving my 2018 C-300 there was smoking out of tail pipe, a rough vibration, hard to control the vehicle and it was starting to lose power. Not a good situation, had to pull over and have vehicle towed to the dealership. Worst part is this is a vehicle used to transport my 5 children to and from school and activities. My 16 year old also drives this …

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710.1%
ODI 11395598 · 28,000 mi

I WAS PULLING OUT OF A PARKING LOT ONTO A HIGHWAY WITH A POSTED LIMIT OF 55 MPH. AS I PULLED OUT ONTO THE HIGHWAY THE GAS PEDAL JUST STOPPED WORKING. THE CAR WAS ON BUT IT JUST WOULDN'T GO ANYWHERE. A VEHICLE COMING FROM MY LEFT AT A HIGH RATE OF SPEED HAD TO PUT ON IT'S BRAKES IN ORDER NOT TO STRIKE THE DRIVER'S SIDE OF MY DOOR. IT CAME WITHIN 2 FEET OF MY VEHICLE. I TURNED OFF THE CAR AND RESTARTED IT. WHEN I RESTARTED THE VEHICLE I TURNED OFF THE "ECO" BUTTON AND DROVE A COUPLE OF MILES BACK TO MY HOME WITH NO PROBLEMS. NOTE....I HAVE…

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39.1%
ODI 11390106 · 87,000 mi

THE FUEL SMELL IS COMING FROM THE RUBBER FUEL, THEY ARE NOT COVER BY MY CPO- WARRANTY ( 3000 USD PAID PACKAGE). I FOUND OVER 100 FRIENDS ON FACEBOOK GROUP HAS THE SAME PROBLEMS. DEALLER REFUSE TO COVER. MY KID IS FELL BAD ABOUT THE SMELL LEAKING.

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214.3%
ODI 11691568

While driving car on Sunday 10/5, it suddenly failed to respond to gas pedal pressure. The car stopped accelerating and rather slowed to 15 MPH, almost causing a car from behind to hit me in the rear side.

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416.0%
ODI 11537819

A recall was issued for the fuel pump, creating a major safety issue and increased risk of collision, which still no available remedy. The manufacturer has failed to provide a resolution in a timely manner, especially for such a vital competent wearing down every day. Furthermore, the manufacturer has offered not other alternatives such as loaned vehicle or compensation for the risk of sudden motor failure.

Look up ODI 11537819 at NHTSA ↗

14.5%
ODI 11555944

The above multiple problems/parts at issue. To include Other/I am not sure. Started at or approximately February 2023. The (Automatic Folding Side View Folding Mirrors before resolution) Malfunctioned 3 separate times before being fixed. During that time the (Cooling System Malfunction Reduced Drive Performance Service Required), displayed 2 separate Unknown Dates on the Dashboard Screen. The MB Dealership Service Diagnostic Check made was not Able to Detect the Trouble and was Never Fixed). On Monday, 08/21/2023, by (USPS) delivered a Merc…

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00.0%

No examples available for this selection.

00.0%

No examples available for this selection.

00.0%

No examples available for this selection.

Structure:Body
188.3%
ODI 11080335 · 9,000 mi

TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C300. WHILE DRIVING APPROXIMATELY 35 MPH, THE GLASS MOON ROOF SUDDENLY EXPLODED, CAUSING GLASS TO ENTER THE CABIN OF THE VEHICLE. THERE WERE NO INJURIES. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF LOVELAND (4040 BYRD DR, LOVELAND, CO), BUT THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 9,000.

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88.1%
ODI 11114956

TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ C300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 18V456000 (STRUCTURE); HOWEVER, THE PARTS TO DO THE REPAIR WERE UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR AS THE RECALL NOTICE WAS RECEIVED OVER THREE WEEKS AGO. THE DEALER (MERCEDES-BENZ OF ONTARIO, 3787 E GUASTI RD, ONTARIO, CA 91761) WAS CONTACTED AND CONFIRMED THAT THE PARTS WERE NOT AVAILABLE FOR THE RECALL REMEDY. THE MANUFACTURER WAS NOT NOTIFIED. THE CONTACT HA…

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57.2%
ODI 11432020

The automatic trunk lid started to close and hit my head while I was loading groceries into the trunk. It also started to close and hit my wife in the head when she was unloading the groceries about 15 minutes later. This situation was not reproduced or confirmed by a dealer or independent service center. There was no notice or warning of pending failure. There appeared to be no visible injury to either person except for a short pain in the head.

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13.0%
ODI 11625377

Roof panel is peeling and rattling loose. I’m afraid it will come off like the other C-300s that were recalled for their roof panel flying off.

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00.0%

No examples available for this selection.

00.0%

No examples available for this selection.

14.5%
ODI 11662742

While driving at 60mph my panoramic sunroof completely shattered. Nothing at all hit the sunroof to cause it to shatter. If my sunshade cover had not been on, the glass would have fallen on me while operating my vehicle. This is not only dangerous but unacceptable. It was also a distraction that could have caused an accident. Mercedes did not make me aware of the class action lawsuit they have with the panoramic sunroofs, and I feel that was neglectful on their part. Upon inspection from a service advisor at a Mercedes Benz dealership, they tol…

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00.0%

No examples available for this selection.

125.0%
ODI 11741578

The panoramic sunroof unexpectedly shattered while the vehicle was parked in my driveway overnight. There was no collision, impact, weather event, vandalism, or any other external cause that could explain the failure. The damaged sunroof remains available for inspection upon request, and security camera footage from my property shows no outside influence that could have caused the glass to break. The unexpected failure of the panoramic sunroof created a significant safety risk. Had this occurred while I was driving, shattered glass could have …

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00.0%

No examples available for this selection.

Steering
136.0%
ODI 11055406

STEERING WHEEL MALFUNCTION. CAR PARKED AT GARAGE AND WHEN I WENT TO START I GOT THE MALFUNCTION MESSAGE AND THE STEERING WHEEL WOULD NOT TURN. I CALLED MERCEDES AND THEY WILL TOW THE CAR TOMORROW. FOR A BRAND NEW 2017 MERCEDES THIS IS UNACCEPTABLE.

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1111.1%
ODI 11169926

I AM WRITING TO SHARE MY DISSATISFACTION WITH MERCEDES BENZ. I HAVE A 2018 C300 THAT WAS PURCHASED BRAND NEW. THE STEERING WHEEL IS DETERIORATING AND I ADDRESSED THE SERVICE DEPARTMENT OF ONTARIO,CA. I OPENED A CASE WITH CORPORATE AND SPOKE WITH CASE MANAGER JAMES WHO WAS NOT HELPFUL, AND REFUSED TO PUT IN A ESCALATION TO MANAGEMENT ABOUT MY SITUATION. HE ACTUALLY THOUGHT MY CALL WAS FUNNY AND LAUGHED AT ONE POINT. I WAS INSULTED BY MERCEDES BENZ WITH THE COMMENT YOU GUYS TOLD ME ABOUT MY WHEEL, AND HOW YOU WILL NOT STAND BEHIND THE STANDAR…

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57.2%
ODI 11360247 · 17,506 mi

TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ C300. THE CONTACT STATED THAT WHENEVER THE STEERING WHEEL WAS TURNED LEFT OR RIGHT, THERE WAS A GRINDING SOUND COMING FROM THE STEERING WHEEL. THE CONTACT CONTACTED MERCEDES BENZ OF BROOKLYN (1800 SHORE PKWY BROOKLYN NY 11214; [phone removed]) WHO STATED THEY WERE AWARE OF SIMILAR ISSUES HOWEVER, THERE WAS NO RECALL. THE VEHICLE HAD NOT BEEN DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT THE FAILURE WAS TYPICALLY CAUSED BY AN IMPACT. THE MANUFACTURER…

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26.1%
ODI 11423100

While driving on the turnpike without warning my steering locked and I lost control of my car.

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00.0%

No examples available for this selection.

14.0%
ODI 11545779

- What component or system failed or malfunctioned, and is it available for inspection upon request? NHTSA Recall ID: 23V445, Fuel Pump Delivery Module How was your safety or the safety of others put at risk? Vehicle at risk to lose drive power, increasing the chance of crashing while operating. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No. Mercedes dealership states they will not repair recalls on the weekends only M-F. I work at the hospital M-F 0800-1700. The dea…

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00.0%

No examples available for this selection.

00.0%

No examples available for this selection.

00.0%

No examples available for this selection.

00.0%

No examples available for this selection.

Air Bags
156.9%
ODI 11040900

TAKATA RECALL. WHAT IS CONSIDERED TO BE A "TIMELY MANNER" FOR THE DEALER TO FIX A CAR?

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44.0%
ODI 11186601 · 10,000 mi

TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ C300W. THE CONTACT STATED THAT THE VEHICLE WAS REPAIRED PER NHTSA CAMPAIGN NUMBER: 18V838000 (AIR BAGS) BY MERCEDES-BENZ OF ARCADIA (101 N SANTA ANITA AVE, ARCADIA, CA 91006, [phone removed]). HOWEVER, THE AIR BAG WARNING INDICATOR ILLUMINATED AFTER THE REPAIR. THE DEALER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED A SECOND TIME. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 10,000.

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11.4%
ODI 11457824

i was involve in a accident, i was Tbone and the driver side airbags didnt deploy.

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26.1%
ODI 11428078

On July 17, 2021 I was driving at the posted rate of speed down I-275 Southbound here in Michigan. All of the sudden and without warning, there was a loud explosion which happened, from as near as I can tell, in the driver's side windshield pillar, where there is an airbag. No warning lights came on, and the car did not change its driving characteristics. Only after I reached my destination and searched under the dash, and every where else (including the exterior), did I find that the plastic "cover" on the pillar is pushed away from the pillar…

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17.1%
ODI 11453645

The contact owns a 2021 Mercedes-Benz C300. The contact stated while driving at an unknown speed, there was a burning odor inside the vehicle. The contact stated the passenger side air bags was enabled warning light was illuminated. The contact also stated the vehicle made an abnormal noise. The contact took the vehicle to the local dealer but was unable to duplicate the failure. The manufacturer had not been informed of the failure. The failure mileage was unknown.

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00.0%

No examples available for this selection.

00.0%

No examples available for this selection.

218.2%
ODI 11576712

Within the first week of ownership (delivery on 1/15/24), the car's parking and/or front collision sensors started malfunctioning on a regular basis. The sensors repeatedly gave off false alerts when the car would approach intersections even though no obstacles were in front of, or behind, the car. The false alerts were quite startling and they consisted of loud alarms and warning images in both the driver's display and the car's heads up display. The repeated false alarms posed a significant safety hazard because they initially caused me to…

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00.0%

No examples available for this selection.

150.0%
ODI 11765781 · 1,729 mi

The contact owns a 2026 Mercedes-Benz C300. The contact stated that there was white powder discovered inside the vehicle. The contact initially thought that it was mold. The contact stated that the heating system had caused the issue. The air bag dust was on the headliner and the driver's side A-pillar. The vehicle was taken to the local dealer, who was unable to determine the cause of the issue. The vehicle was then taken to another dealer, Mercedes-Benz Atlanta South Parts Department (3800 Royal S Pkwy, Atlanta, GA 30349), who was unable to d…

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Power Train
125.6%
ODI 11197127 · 29,000 mi

WHEN IDLING AT THE LIGHT. THE CAR WOULD SHUT ITSELF OFF. ALL THE WARNING LIGHTS WILL COME ON. I THEN HAVE TO RESTART THE CAR WITH THE PUSH START TO RESET IT. THEN IT'LL WORK FINE. I HAVE BEEN TO MERCEDES DEALERSHIP IN NEW ROCHELLE FOR FOUR TIMES ABOUT THIS ISSUE. THEY CHANGED THE BATTERY THE FIRST TIME. TWO DAYS LATER THE SITUATION OCCURRED AGAIN. THEN THE SECOND AND THIRD TIME THEY GAVE ME BACK THE CAR AND SAID THEY DIDN'T SEE ANYTHING WRONG BECAUSE NO CODES POPPED UP. BOTH TIMES I TOOK THE CAR BACK AND THE SITUATION OCCURRED AGAIN. THIS PROB…

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22.0%
ODI 11446178 · 62,000 mi

CYLINDER 1 SPARK PLUGS IS DAMAGED DUE TO PISTON DAMAGE, HOLE IN PISTON. IF EXTRA DAMAGE IS FOUND ON TEAR DOWN, COMPLETE ENGINE REPLACEMENT. This is direct from the repair facilities reports. While driving my 2018 C-300 there was smoking out of tail pipe, a rough vibration, hard to control the vehicle and it was starting to lose power. Not a good situation, had to pull over and have vehicle towed to the dealership. Worst part is this is a vehicle used to transport my 5 children to and from school and activities. My 16 year old also drives this …

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68.7%
ODI 11637804 · 36,000 mi

The contact owns a 2019 Mercedes-Benz C 300. The contact stated that while driving 65 MPH, the vehicle inadvertently lost motive power, and was unable to accelerate above 25 MPH. The check engine warning light was illuminated. The vehicle was taken to the dealer, who determined that the PCM required a software update. The vehicle was repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 36,000.

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39.1%
ODI 11589214

My wife was driving our 2020 Mercedes Benz C300 coupe near our house and the engine light came on. Then the car could not be driven over the speed of 30 miles per hour. Then it stopped and had to be towed. Fortunately, she was able to avoid being hit by other vehicles.The car only has 25219 miles. It was towed to a mechanic who performed a diagnostic test which provided a series of codes regarding the malfunction. Three codes were related to the CAMTRONIC camshaft system and its Solenoid ( Codes: P003C-53; P34AE-00; P34AD-09). Camshaft positi…

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17.1%
ODI 11678865

My C300 only had about 42,000 miles and was less than 5 years old. Just after the factory warranty expired, the engine was running rough and hot, and "check engine" light illuminated. My local garage quickly diagnosed the problem as a failed cylinder head, stated that it is common with Mercedes 4-cylinder engines from about 2017, and said Mercedes may cover it since it is a "known problem" and shouldn't happen with that mileage. I was charged $7,860 by my local Mercedes dealer, and despite multiple contacts with MercedezUSA, they refuse to ack…

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00.0%

No examples available for this selection.

14.5%
ODI 11577612

On 2/17/24 the vehicle was parked in front of my house. There is a slight grade. The vehicle had been parked for approximately 1 hour when my neighbor called me to tell me that the vehicle had rolled down the hill and into his storage building. The vehicle rolled on its own. I have video evidence that no one was in or around the car at the time of this occurrence. I also, have 2 eyewitnesses who can corroborate this story. Due to safety concerns, I immediately returned the vehicle to Mercedes. I have .MOV files and pictures JPEG that will not u…

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19.1%
ODI 11610577

Issue: Post-Airbag Deployment PCM Lockout Description: I am reporting a critical safety concern regarding the 2024 Mercedes-Benz C300. After an airbag deployment, the vehicle's Powertrain Control Module (PCM) is designed to automatically lock, preventing the engine from being restarted. While this feature is intended to enhance safety, it poses significant risks in certain emergency situations. For instance, in scenarios such as a landslide, attempted robbery, or a collision with wildlife in a remote area with poor cell signal, this design co…

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00.0%

No examples available for this selection.

00.0%

No examples available for this selection.

Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.

Failure mileage by component

Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.

Component failure mileage distribution
ComponentMileage range (25th–75th percentile)MedianUsable recordsExamples
Forward Collision Avoidance: Automatic Emergency BrakingToo few reports for a range3,500 mi2 (sparse)
ODI 11520487 · 1,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated that while driving at various speeds, the Forward Collision Avoidance system erroneously activated, causing the vehicle to abruptly stop in the middle of the road. The failure occurred on three separate occasions and each time no other vehicle or object was nearby to cause the Forward Collision Avoidance system to become activated. The vehicle was taken to the local dealer who replaced sensors and recalibrated the Forward Collision Avoidance system, but the failure persisted. The ma…

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ODI 11544088 · 6,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

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Electrical SystemToo few reports for a range6,000 mi1 (sparse)
ODI 11544088 · 6,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

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Service BrakesToo few reports for a range2,000 mi1 (sparse)
ODI 11520942 · 2,000 mi

The contact owns a 2023 Mercedes C300. The contact stated that while traveling over a pedestrian crosswalk, the emergency braking mode was engaged. The accelerator pedal was applied but the vehicle failed to accelerate. The vehicle went into restricted mode. A Hyundai Elantra crashed into the rear of the vehicle. The driver in the Hyundai stated that the brake lights were not illuminated. There was no air bag deployment or fire. A police report was filed. The contact who was occupying the front passenger seat sustained an injury to her neck…

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Forward Collision Avoidance: Adaptive Cruise ControlToo few reports for a range6,000 mi1 (sparse)
ODI 11544088 · 6,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

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EngineToo few reports for a range3,900 mi1 (sparse)
ODI 11540331 · 3,900 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while reversing, the check engine warning light illuminated and the vehicle lost motive power, stalled and shutoff. The contact was able to restart the vehicle, but had the vehicle towed to the dealer. The dealer stated that no cause for the failure was found but updated the software. The failure reoccurred. The vehicle was taken back to the dealer and the contact was informed that the water pump needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted…

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Tires:SidewallToo few reports for a range9,000 mi2 (sparse)
ODI 11543206 · 2,000 mi

The contact owns a 2023 Mercedes-Benz C300 equipped with Bridgestone RFT Tires, Tire Line: Turanza 100, Tire Size: 225/45/R18, DOT Number: VRJ7V4Y. The contact stated that while driving at approximately 40 MPH, the driver's side tire exploded. The contact stated that a "0 PSI driver side front tire" warning light was illuminated. The contact stated that he observed that the driver's side tire had a portion blown out on the sidewall of the tire. The vehicle was towed to a local dealer where it was diagnosed that the blowout had been due to exter…

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ODI 11615020 · 16,000 mi

The contact owns a 2023 Mercedes Benz C300 equipped with Pirelli Tires, Tire Line: P Zero, Tire Size: 255/35/VR19, DOT Number: [XXX] . The contact stated while driving at undisclosed speeds, there was an unknown bumping sound heard. The contact pulled over and noticed that the passenger's side front tire was flat. The TPMS warning light was illuminated. The infotainment screen showed a reading of the tire 0 PSI. The contact noticed there was a hole in the tire and the side wall was damaged, and the rim was damaged. The contact depressed the SOS…

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Complaint and recall timeline

Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.

25V253000 · 2025-05-0225V255000 · 2025-05-1226V481000 · 2026-07-242 reports2024-112026-10

Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.

Monthly counts, recall campaigns and complaint examples
Monthly complaint and recall timeline
MonthComplaintsCampaigns announcedExamples
2024-110None

No examples available for this selection.

2024-120None

No examples available for this selection.

2025-010None

No examples available for this selection.

2025-020None

No examples available for this selection.

2025-030None

No examples available for this selection.

2025-040None

No examples available for this selection.

2025-05125V253000, 25V255000
ODI 11662742

While driving at 60mph my panoramic sunroof completely shattered. Nothing at all hit the sunroof to cause it to shatter. If my sunshade cover had not been on, the glass would have fallen on me while operating my vehicle. This is not only dangerous but unacceptable. It was also a distraction that could have caused an accident. Mercedes did not make me aware of the class action lawsuit they have with the panoramic sunroofs, and I feel that was neglectful on their part. Upon inspection from a service advisor at a Mercedes Benz dealership, they tol…

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2025-060None

No examples available for this selection.

2025-071None
ODI 11674663

On 4 different occasions car brake assist activated causing car to come to an immediate stop and jerk. At stop light as I started to accelerate a left turn car came to an immediate stop almost causing the car behind hit rear end. Brake assist light activated. This happened twice. And twice when in reverse backing out of a parking space and backing into driveway. Dealership notified look at my car and stated they did not see anything wrong. 4th incident happened within 30 minutes after leaving Wilmington Mercedes Benz.

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2025-082None
ODI 11678947

My panoramic sunroof spontaneously exploded while driving down the highway, no external impact was made. The glass exploded from the inside out. It made a loud boom, it startled me on the highway resulted me to swerving on the road, which would have put me and other drivers at risk. There's plenty other MB drivers reported similar issues that stated. MB has also settled a class action lawsuit regarding such manner. UNKNOWN There were no warning signs prior to the event. The event spontaneous and sudden.

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ODI 11680376 · 28,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated that on occasion while driving at various speeds, the vehicle unexpectedly stopped without the brake pedal being depressed. There were no warning lights illuminated. The vehicle was diagnosed twice by the local dealer, and the contact was advised that the Forward Collision Avoidance sensors needed to be recalibrated; however, the failure persisted. The vehicle was taken back to the same dealer where the vehicle was inspected, and the contact was advised that further diagnostic tests…

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2025-090None

No examples available for this selection.

2025-100None

No examples available for this selection.

2025-111None
ODI 11699593

When going into Reverse the passenger side mirror angles down to see curbs. When putting back into Drive it should be going back up to normal angle, but 20% of the time it does not go back up. If you're driving in the dark you may not know it's reverted back up and get into a car accident. Dealership said there are no issues and a technician stated it goes back up at +9 mph. I've gone over 30 mph driving on public street only to realize it late. I am hoping this gets publicity before an accident occurs due to a defective safety-comfort feature.…

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2025-120None

No examples available for this selection.

2026-010None

No examples available for this selection.

2026-020None

No examples available for this selection.

2026-030None

No examples available for this selection.

2026-040None

No examples available for this selection.

2026-050None

No examples available for this selection.

2026-060None

No examples available for this selection.

2026-07026V481000

No examples available for this selection.

2026-080None

No examples available for this selection.

2026-090None

No examples available for this selection.

2026-10 (partial)0None

No examples available for this selection.

Emerging complaint spikes

Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.

This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.

No complete months meet the spike thresholds for this selection.

Equal-age model-year comparison

Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.

Age 0Age 1Age 220 reports

2022: 20 complaints · 2023: 20 complaints

Equal observation windows
Model yearThrough age 0Through age 1Through age 2
202261620
2023101520
Date coverage across each selected cohort
Date basis for all complaints in selected model years
YearIncident dates usedFiling date fallbacksExcluded dates
20222500
20232002

Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.

Components reported together

Each cell counts unique complaints naming both components. Open a nonzero cell for examples.

Component co-occurrence matrix
ComponentForward Collision Avoidance: Automatic Emergency BrakingElectrical SystemService BrakesForward Collision Avoidance: Adaptive Cruise ControlUnknown Or OtherEngineForward Collision Avoidance: WarningsTires:Sidewall
Forward Collision Avoidance: Automatic Emergency Braking—
2
ODI 11524034

- December 5, 2022, while driving on I-20 East in Atlanta, Georgia in the evening, at a speed of 15-20 mph my vehicle abruptly came to a stop in the middle of traffic with no warning and no action prompted by me while driving. There were vehicles positioned in front and behind my vehicle. Thankfully, the vehicle behind me was able to slam on its breaks to prevent colliding into my vehicle. - April 7, 2023, while driving in southwest Atlanta in a residential area at a speed of 15-20 mph, while on the phone with one of my work colleagues, my vehi…

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ODI 11544088 · 6,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

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2
ODI 11528225

The Mercedes just slams on the brakes for no reason. It's happened 3x and is very scary. According to Internet posts this is a common problem because of collision assist malfunction

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ODI 11674663

On 4 different occasions car brake assist activated causing car to come to an immediate stop and jerk. At stop light as I started to accelerate a left turn car came to an immediate stop almost causing the car behind hit rear end. Brake assist light activated. This happened twice. And twice when in reverse backing out of a parking space and backing into driveway. Dealership notified look at my car and stated they did not see anything wrong. 4th incident happened within 30 minutes after leaving Wilmington Mercedes Benz.

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2
ODI 11532743

Major safety issue - PHANTOM BRAKING. On 2 separate occasions the vehicle engaged emergency braking while there was no apparent hazard. This phantom braking was very dangerous. This car has adaptive cruise control. It occurred in the exact same spot on Interstate-84 and NE 21st Avenue in Portland, Oregon while traveling east bound. The cruise control was on and engaged in incident 1. Cruise control was on, but not set, in the second incident. First incident was approximately 6/1/23. Second incident was 7/16/23. I have reported to Mercedes Benz …

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ODI 11544088 · 6,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

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00
2
ODI 11524034

- December 5, 2022, while driving on I-20 East in Atlanta, Georgia in the evening, at a speed of 15-20 mph my vehicle abruptly came to a stop in the middle of traffic with no warning and no action prompted by me while driving. There were vehicles positioned in front and behind my vehicle. Thankfully, the vehicle behind me was able to slam on its breaks to prevent colliding into my vehicle. - April 7, 2023, while driving in southwest Atlanta in a residential area at a speed of 15-20 mph, while on the phone with one of my work colleagues, my vehi…

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ODI 11532743

Major safety issue - PHANTOM BRAKING. On 2 separate occasions the vehicle engaged emergency braking while there was no apparent hazard. This phantom braking was very dangerous. This car has adaptive cruise control. It occurred in the exact same spot on Interstate-84 and NE 21st Avenue in Portland, Oregon while traveling east bound. The cruise control was on and engaged in incident 1. Cruise control was on, but not set, in the second incident. First incident was approximately 6/1/23. Second incident was 7/16/23. I have reported to Mercedes Benz …

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0
Electrical System
2
ODI 11524034

- December 5, 2022, while driving on I-20 East in Atlanta, Georgia in the evening, at a speed of 15-20 mph my vehicle abruptly came to a stop in the middle of traffic with no warning and no action prompted by me while driving. There were vehicles positioned in front and behind my vehicle. Thankfully, the vehicle behind me was able to slam on its breaks to prevent colliding into my vehicle. - April 7, 2023, while driving in southwest Atlanta in a residential area at a speed of 15-20 mph, while on the phone with one of my work colleagues, my vehi…

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ODI 11544088 · 6,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

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—
1
ODI 11523001

First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. Electrical: intermittently, the door/trunk lock, side mir…

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1
ODI 11544088 · 6,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

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1
ODI 11523001

First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. Electrical: intermittently, the door/trunk lock, side mir…

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1
ODI 11555944

The above multiple problems/parts at issue. To include Other/I am not sure. Started at or approximately February 2023. The (Automatic Folding Side View Folding Mirrors before resolution) Malfunctioned 3 separate times before being fixed. During that time the (Cooling System Malfunction Reduced Drive Performance Service Required), displayed 2 separate Unknown Dates on the Dashboard Screen. The MB Dealership Service Diagnostic Check made was not Able to Detect the Trouble and was Never Fixed). On Monday, 08/21/2023, by (USPS) delivered a Merc…

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1
ODI 11524034

- December 5, 2022, while driving on I-20 East in Atlanta, Georgia in the evening, at a speed of 15-20 mph my vehicle abruptly came to a stop in the middle of traffic with no warning and no action prompted by me while driving. There were vehicles positioned in front and behind my vehicle. Thankfully, the vehicle behind me was able to slam on its breaks to prevent colliding into my vehicle. - April 7, 2023, while driving in southwest Atlanta in a residential area at a speed of 15-20 mph, while on the phone with one of my work colleagues, my vehi…

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0
Service Brakes
2
ODI 11528225

The Mercedes just slams on the brakes for no reason. It's happened 3x and is very scary. According to Internet posts this is a common problem because of collision assist malfunction

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ODI 11674663

On 4 different occasions car brake assist activated causing car to come to an immediate stop and jerk. At stop light as I started to accelerate a left turn car came to an immediate stop almost causing the car behind hit rear end. Brake assist light activated. This happened twice. And twice when in reverse backing out of a parking space and backing into driveway. Dealership notified look at my car and stated they did not see anything wrong. 4th incident happened within 30 minutes after leaving Wilmington Mercedes Benz.

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1
ODI 11523001

First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. Electrical: intermittently, the door/trunk lock, side mir…

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—0
1
ODI 11523001

First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. Electrical: intermittently, the door/trunk lock, side mir…

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000
Forward Collision Avoidance: Adaptive Cruise Control
2
ODI 11532743

Major safety issue - PHANTOM BRAKING. On 2 separate occasions the vehicle engaged emergency braking while there was no apparent hazard. This phantom braking was very dangerous. This car has adaptive cruise control. It occurred in the exact same spot on Interstate-84 and NE 21st Avenue in Portland, Oregon while traveling east bound. The cruise control was on and engaged in incident 1. Cruise control was on, but not set, in the second incident. First incident was approximately 6/1/23. Second incident was 7/16/23. I have reported to Mercedes Benz …

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ODI 11544088 · 6,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

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1
ODI 11544088 · 6,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

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0—00
1
ODI 11532743

Major safety issue - PHANTOM BRAKING. On 2 separate occasions the vehicle engaged emergency braking while there was no apparent hazard. This phantom braking was very dangerous. This car has adaptive cruise control. It occurred in the exact same spot on Interstate-84 and NE 21st Avenue in Portland, Oregon while traveling east bound. The cruise control was on and engaged in incident 1. Cruise control was on, but not set, in the second incident. First incident was approximately 6/1/23. Second incident was 7/16/23. I have reported to Mercedes Benz …

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0
Unknown Or Other0
1
ODI 11523001

First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. Electrical: intermittently, the door/trunk lock, side mir…

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1
ODI 11523001

First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. Electrical: intermittently, the door/trunk lock, side mir…

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0—000
Engine0
1
ODI 11555944

The above multiple problems/parts at issue. To include Other/I am not sure. Started at or approximately February 2023. The (Automatic Folding Side View Folding Mirrors before resolution) Malfunctioned 3 separate times before being fixed. During that time the (Cooling System Malfunction Reduced Drive Performance Service Required), displayed 2 separate Unknown Dates on the Dashboard Screen. The MB Dealership Service Diagnostic Check made was not Able to Detect the Trouble and was Never Fixed). On Monday, 08/21/2023, by (USPS) delivered a Merc…

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000—00
Forward Collision Avoidance: Warnings
2
ODI 11524034

- December 5, 2022, while driving on I-20 East in Atlanta, Georgia in the evening, at a speed of 15-20 mph my vehicle abruptly came to a stop in the middle of traffic with no warning and no action prompted by me while driving. There were vehicles positioned in front and behind my vehicle. Thankfully, the vehicle behind me was able to slam on its breaks to prevent colliding into my vehicle. - April 7, 2023, while driving in southwest Atlanta in a residential area at a speed of 15-20 mph, while on the phone with one of my work colleagues, my vehi…

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ODI 11532743

Major safety issue - PHANTOM BRAKING. On 2 separate occasions the vehicle engaged emergency braking while there was no apparent hazard. This phantom braking was very dangerous. This car has adaptive cruise control. It occurred in the exact same spot on Interstate-84 and NE 21st Avenue in Portland, Oregon while traveling east bound. The cruise control was on and engaged in incident 1. Cruise control was on, but not set, in the second incident. First incident was approximately 6/1/23. Second incident was 7/16/23. I have reported to Mercedes Benz …

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1
ODI 11524034

- December 5, 2022, while driving on I-20 East in Atlanta, Georgia in the evening, at a speed of 15-20 mph my vehicle abruptly came to a stop in the middle of traffic with no warning and no action prompted by me while driving. There were vehicles positioned in front and behind my vehicle. Thankfully, the vehicle behind me was able to slam on its breaks to prevent colliding into my vehicle. - April 7, 2023, while driving in southwest Atlanta in a residential area at a speed of 15-20 mph, while on the phone with one of my work colleagues, my vehi…

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0
1
ODI 11532743

Major safety issue - PHANTOM BRAKING. On 2 separate occasions the vehicle engaged emergency braking while there was no apparent hazard. This phantom braking was very dangerous. This car has adaptive cruise control. It occurred in the exact same spot on Interstate-84 and NE 21st Avenue in Portland, Oregon while traveling east bound. The cruise control was on and engaged in incident 1. Cruise control was on, but not set, in the second incident. First incident was approximately 6/1/23. Second incident was 7/16/23. I have reported to Mercedes Benz …

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00—0
Tires:Sidewall0000000—

Co-reporting does not establish that one component caused another concern.

Recurring narrative patterns

Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.

5 patterns with matching reports.

Warning lights and dashboard alerts

6 mentions · 27.3% of complaints

Median mileage: 6,000 mi (5 usable records).

ODI 11540331 · 3,900 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while reversing, the check engine warning light illuminated and the vehicle lost motive power, stalled and shutoff. The contact was able to restart the vehicle, but had the vehicle towed to the dealer. The dealer stated that no cause for the failure was found but updated the software. The failure reoccurred. The vehicle was taken back to the dealer and the contact was informed that the water pump needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted…

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ODI 11543206 · 2,000 mi

The contact owns a 2023 Mercedes-Benz C300 equipped with Bridgestone RFT Tires, Tire Line: Turanza 100, Tire Size: 225/45/R18, DOT Number: VRJ7V4Y. The contact stated that while driving at approximately 40 MPH, the driver's side tire exploded. The contact stated that a "0 PSI driver side front tire" warning light was illuminated. The contact stated that he observed that the driver's side tire had a portion blown out on the sidewall of the tire. The vehicle was towed to a local dealer where it was diagnosed that the blowout had been due to exter…

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ODI 11544088 · 6,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

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Matching rule\b(warning light\w*|check engine|dashboard warning\w*|malfunction indicator)\b

Brake response concerns

3 mentions · 13.6% of complaints

Median mileage: 28,000 mi (1 usable records).

ODI 11523001

First week, the car would take off fast as soon as the brakes were released. Then first time I used the heat there was a crackling sound coming form the side of the center display and it got extremely hot, I was on the FWY driving in the rain. Brakes: Intermittently, when braking, the car speeds up as if shifting to N, problematic in the FWY traffic behind another car, sometimes the brake pedal can be heard rattling really lose underfoot, brakes also used to groan when backing up. Electrical: intermittently, the door/trunk lock, side mir…

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ODI 11532743

Major safety issue - PHANTOM BRAKING. On 2 separate occasions the vehicle engaged emergency braking while there was no apparent hazard. This phantom braking was very dangerous. This car has adaptive cruise control. It occurred in the exact same spot on Interstate-84 and NE 21st Avenue in Portland, Oregon while traveling east bound. The cruise control was on and engaged in incident 1. Cruise control was on, but not set, in the second incident. First incident was approximately 6/1/23. Second incident was 7/16/23. I have reported to Mercedes Benz …

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ODI 11680376 · 28,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated that on occasion while driving at various speeds, the vehicle unexpectedly stopped without the brake pedal being depressed. There were no warning lights illuminated. The vehicle was diagnosed twice by the local dealer, and the contact was advised that the Forward Collision Avoidance sensors needed to be recalibrated; however, the failure persisted. The vehicle was taken back to the same dealer where the vehicle was inspected, and the contact was advised that further diagnostic tests…

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Matching rule\b(brake fail\w*|brakes fail\w*|brake pedal|braking distance|unintended braking|phantom braking)\b

Hard or delayed shifting

1 mentions · 4.5% of complaints

Median mileage: Unavailable (0 usable records).

ODI 11674663

On 4 different occasions car brake assist activated causing car to come to an immediate stop and jerk. At stop light as I started to accelerate a left turn car came to an immediate stop almost causing the car behind hit rear end. Brake assist light activated. This happened twice. And twice when in reverse backing out of a parking space and backing into driveway. Dealership notified look at my car and stated they did not see anything wrong. 4th incident happened within 30 minutes after leaving Wilmington Mercedes Benz.

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Matching rule\b(hard shift\w*|rough shift\w*|delay\w* shift\w*|shift\w* hard|jerk\w*|lurch\w*)\b

Stalling or loss of power

1 mentions · 4.5% of complaints

Median mileage: 3,900 mi (1 usable records).

ODI 11540331 · 3,900 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while reversing, the check engine warning light illuminated and the vehicle lost motive power, stalled and shutoff. The contact was able to restart the vehicle, but had the vehicle towed to the dealer. The dealer stated that no cause for the failure was found but updated the software. The failure reoccurred. The vehicle was taken back to the dealer and the contact was informed that the water pump needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted…

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Matching rule\b(stall\w*|loss of power|lost power|engine shut\w* off)\b

Steering assistance concerns

1 mentions · 4.5% of complaints

Median mileage: 6,000 mi (1 usable records).

ODI 11544088 · 6,000 mi

The contact owns a 2023 Mercedes-Benz C300. The contact stated while driving 50 MPH with the Intelligent Cruise Control activated, with no other vehicles or objects nearby, the vehicle inadvertently slowed down. After restarting the vehicle, the vehicle returned to normal functionality but later displayed the following messages: “Active Emergency Stop Assist Currently Unavailable”, and “Active Steering Assist Inoperable”. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer but not yet diagnosed. Th…

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Matching rule\b(power steer\w*|steering assist\w*|steering lock\w*|steering wheel lock\w*)\b