| Electrical System | 00.0%No examples available for this selection. | 112.5%ODI 11735615 · 31,153 miThe contact owns a 2024 Mercedes-Benz GLC 300. The contact stated that while driving at approximately 35 MPH, the brake was applied unexpectedly without the contact depressing the brake pedal. The contact stated that she was unsure if the forward collision system was turned on at that time. The driver's seat belt tightened, and she sustained a bruise on her left arm and soreness on her chest. Medical attention was required. The vehicle was taken to a dealer where they were not able to replicate the failure. On another occasion, while parked, th… Look up ODI 11735615 at NHTSA ↗ | 660.0%ODI 11695851The instrument panel behind the steering wheel has gone totally dark. This issue happened about a month ago but resolved itself somehow. Issue happened again and will not correct itself. Took vehicle to dealer and they could not resolve issue with software update. Upon researching the MBWorld.org user forum I noticed this may be a wide spread issue. With a dark/blank instrument panel you cannot know your speed, fuel level, or what gear you have placed the car in. My technician even indicated he has seen this issue on several 2025 MB models. Look up ODI 11695851 at NHTSA ↗ | 466.7%ODI 11711555While at a stop with foot on brake, the vehicle surges forward powerfully making a loud noise despite having foot on brake. Forcefully pushing on brake pedal harder eventually stops the car. Most recent time the display screen showed "Transmission Deactivated". Dealership drove car once but did not perform service inspection. Dealership to pick up/tow vehicle for service inspection. This happened four times in the eight weeks since pick up of vehicle as brand new. This could have cause a crash or caused vehicle to strike an object or pers… Look up ODI 11711555 at NHTSA ↗ |
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| Forward Collision Avoidance: Automatic Emergency Braking | 111.1%ODI 11747647My 2023 GLC300 suffered a severe, unprovoked emergency brake deployment in traffic, nearly causing a pileup. on [XXX]. The car has only 14,500 miles and has a chronic history of dangerous, unprovoked Active Brake Assist deployments. It broke down twice in its first month of ownership for other reasons, slammed on the brakes during a left-hand turn last year, nearly causing an accident and on [XXX] executed a violent, full-lock emergency stop from 25mph in light traffic with no obstacles in sight, nearly causing a multi-car pileup and putting me… Look up ODI 11747647 at NHTSA ↗ | 337.5%ODI 11690219While carrying my carbon fiber bicycle on a rear hitch mounted bicycle carrier, the vehicle severely and violently applies the brakes and swerves either left or right or both. This catastrophic maneuver has put me and other drivers in a non avoidable highly calamity. This “AUTO” maneuver happens dozens of times in during a fifteen mile trip to local bicycle trails. Dealer replaced the Trailer Recognition Module 9-24-2025. As expected, dangerous situation remains. Happens every opportunity when carrying bicycles. First exhibited after purch… Look up ODI 11690219 at NHTSA ↗ | 220.0%ODI 11723692To the Office of Defects Investigation National Highway Traffic Safety Administration I am submitting this complaint to formally report a serious and recurring safety defect involving the automatic braking and collision detection systems in our Mercedes-Benz GLC. License Plate: 9RHN710 Dealer Servicing Vehicle: Mercedes-Benz of Stevens Creek (AutoNation), San Jose, California The vehicle has repeatedly experienced unexpected and unprovoked braking events, including situations where the automatic braking system engages despite there being no … Look up ODI 11723692 at NHTSA ↗ | 00.0%No examples available for this selection. |
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| Unknown Or Other | 444.4%ODI 11664103I have had numerous incidents since I purchased the vehicle in April of 2023. The first was when it would not start. It continuously ran through all of the error messages and simply refused to start. This happened numerous times, leaving me stranded for 20 minutes or longer. Then, the safety features would randomly stop functioning, and I would receive error messages stating that they were disabled. The check engine light would appear on the dashboard, and it continues to do so, even though I am told there is nothing wrong with the engine. My M… Look up ODI 11664103 at NHTSA ↗ | 112.5%ODI 11751243The vehicle presented multiple warnings/errors before shutting down on the street in traffic on June 23, 2026. Warnings such as Collision Detected, Blind Spot Assist and Exit Warning Inoperative, PRE-SAFE Inoperative, System Failure Detected, Service Required Do Not Shift Gear, along with various lights on the dashboard which includes the Check Engine Light. The vehicle was towed to local Mercedes Benz dealership which reported the issue was with a drive train module that required a software update, the update was performed and vehicle was ret… Look up ODI 11751243 at NHTSA ↗ | 00.0%No examples available for this selection. | 116.7%ODI 11743388I was parked for a few minutes and I suddenly noticed a strong oder coming into my vehicle. I could not pinpoint what the smell was, but I knew that whatever was coming into the SUV was not safe. My screen started flashing warnings "Service Required: Do Not Drive" “Do Not Shift Gears”. After the warning, white smoke started to roll out from under the hood and into the vehicle. I immediately ran back to get my baby out of her car seat and to safety. I was at my local YMCA and staff ran out to I assist me and had a fire extinguisher. YMCA called… Look up ODI 11743388 at NHTSA ↗ |
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| Structure:Body | 222.2%ODI 11664589The rear door randomly closes with force unexpectantly. We contacted the Mercedes dealer where the car was purchased and is serviced. They responded it can not be fixed and was an ongoing concern of many owners Look up ODI 11664589 at NHTSA ↗ | 112.5%ODI 11749171The rear lift gate closes unexpectedly when standing behind the vehicle and loading or unloading the cargo area. The keyless soft close activates even though there is no foot movement, or when there is minimal movement. This happens without warning. On several occasions this has happened to me, and also to my wife. It has caused minor bruises, but more importantly we are both older and it has been difficult extricating ourselves and reaching the control to raise the gate again. While there have been no falls yet, it's only a matter of time befo… Look up ODI 11749171 at NHTSA ↗ | 110.0%ODI 11761794The liftgate on this car is faulty. There are hundreds of reports online that I found when it happened to me, which has been several times now. The liftgate has a sensor that is activated by your foot, but when you are inside the hatch it will trigger and close on you. There is no sensor to stop it from falling and it traps you inside and has hit me on the head, bruised my shoulders and back and I have fallen from being hit by it. I have reported it to Mercedes several times and asked them to at least cover the sensor and they say it's not poss… Look up ODI 11761794 at NHTSA ↗ | 116.7%ODI 11736668I bought a 2026 GLC300 4matic SUV a month ago. I am very disappointed and scared of serious bodily damage due to the trunk door closing by itself while my upper body is loading/unloading the trunk. My wife and I were hit on the shoulder, back, arms, or head over a dozen times for 1 month. We took the car to the dealership for the problem but did not hear back from them for 3 days. The loaner car the dealership provided which is also 2026 GLC300 SUV also closes on me in the trunk. When the trunk shuts by tself while part of my upper bo… Look up ODI 11736668 at NHTSA ↗ |
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| Power Train | 111.1%ODI 11685231The contact owns a 2023 Mercedes-Benz GLC300 4Matic. The contact stated that while driving at various speeds and coming to a stop, the vehicle skidded or slid and felt like it had been rear-ended. There was no warning light illuminated. The vehicle was taken to the dealer, but the failure could not be duplicated. The contact stated that the infotainment system was inoperable intermittently. Additionally, the contact stated that while driving 40-50 MPH and depressing the accelerator pedal, the vehicle failed to respond. The contact merged to the… Look up ODI 11685231 at NHTSA ↗ | 00.0%No examples available for this selection. | 110.0%ODI 11755359Vehicle experiences a severe, abrupt jerk/jolt during deceleration around the 5th-to-4th gear downshift. The issue occurs consistently when slowing down. Dealership verified the condition on Repair Order #1906625 and confirmed a transmission flaw. Dealer stated software is required from the manufacturer with no ETA for release. The abrupt deceleration creates unexpected cabin jolting during normal traffic slowing. Look up ODI 11755359 at NHTSA ↗ | 116.7%ODI 11711555While at a stop with foot on brake, the vehicle surges forward powerfully making a loud noise despite having foot on brake. Forcefully pushing on brake pedal harder eventually stops the car. Most recent time the display screen showed "Transmission Deactivated". Dealership drove car once but did not perform service inspection. Dealership to pick up/tow vehicle for service inspection. This happened four times in the eight weeks since pick up of vehicle as brand new. This could have cause a crash or caused vehicle to strike an object or pers… Look up ODI 11711555 at NHTSA ↗ |
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| Service Brakes | 00.0%No examples available for this selection. | 112.5%ODI 117598732. Service Department Misconduct , XXX Appointment On XXX, I brought my vehicle to the dealership’s service department for a pre-scheduled and confirmed appointment regarding a safety-related warning involving the emergency brake system. Despite having provided a full description of the issue at the time of booking, I was informed upon arrival that the diagnostic process would take more than five hours. When I asked about a loaner vehicle , standard practice at Mercedes-Benz dealerships in cases of extended service , I was refused, even though f… Look up ODI 11759873 at NHTSA ↗ | 110.0%ODI 11669164See attached document for complaint. Look up ODI 11669164 at NHTSA ↗ | 116.7%ODI 11733775The breaks on these vehicles are extremely dangerous . Before I leased this vehicle test drove 3 vehicles. The salesman said the breaks will adjust as you drive. They have not. ITS all over the internet that this vehicle has very unresponsive breaks. It takes 75 precent of pressure pushing down on the break pad distance before the car breaks engage. I already almost had an accident as the distance it takes for the car to respond is a significant distance before the car comes to a full stop. I have brought back the car to my dealership three tim… Look up ODI 11733775 at NHTSA ↗ |
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| Structure:Body:Hatchback/Liftgate | 00.0%No examples available for this selection. | 225.0%ODI 11735615 · 31,153 miThe contact owns a 2024 Mercedes-Benz GLC 300. The contact stated that while driving at approximately 35 MPH, the brake was applied unexpectedly without the contact depressing the brake pedal. The contact stated that she was unsure if the forward collision system was turned on at that time. The driver's seat belt tightened, and she sustained a bruise on her left arm and soreness on her chest. Medical attention was required. The vehicle was taken to a dealer where they were not able to replicate the failure. On another occasion, while parked, th… Look up ODI 11735615 at NHTSA ↗ | 110.0%ODI 11723770See attached document for complaint. Look up ODI 11723770 at NHTSA ↗ | 00.0%No examples available for this selection. |
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| Back Over Prevention: Sensing System: Camera | 00.0%No examples available for this selection. | 112.5%ODI 11716659New car was purchased from Rocklin Mercedes in California. Soon after the rear back up camera kept opening and closing when the car was in drive and at random times. The was then taken into Autobahn Motors in Belmont California to have the problem checked. I was told Mercedes was working on a software fix at which time the service tech never wrote up the problem. In 2025 the car again was taken into Mercedes for service at which time I brought up the same issue and was told most newer cars have this problem and there is NO fix, even the loaner… Look up ODI 11716659 at NHTSA ↗ | 00.0%No examples available for this selection. | 116.7%ODI 11710801Backup camera keeps opening and closing constantly while driving in slow speeds. While driving, backup camera keeps opening and closing, creating a noise and distraction to the driver and might cause accidents. The issue has been confirmed by the Mercedes Benz dealership service manager, describing as a recurrent in specific models with no current action plan or solution on near future. The car and component has been checked by the manufacturer. There are no warning lamps or symptoms prior to the problem occurrence and appeared at the first co… Look up ODI 11710801 at NHTSA ↗ |
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