2015 Mercedes-Benz C400 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
10 owner complaints analyzed
8 distinct recall campaigns
41,850 mi median reported failure mileage
Scope: 2015 model year. Data updated: . 6 complaints include usable failure mileage. View data status.
Owner-reported patterns
Most common problems
Structure is the most frequently named component, appearing in 3 of 10 complaints (30.0%). A complaint can name multiple components.
Recurring terms in complaint narratives
Topic
Matching reports
Share of complaints
Braking behavior
2
20.0%
Engine operation
1
10.0%
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.
Structure leads the component reports. Braking behavior appears in 2 complaint narratives. Engine operation 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.
ENGINE RANDOMLY STALLS AFTER SITTING AT RED LIGHT/OR WHILE IN TRAFFIC. ALL WARNING/DASHBOARD LIGHTS COME ON AND YOU CAN ONLY START THE CAR BY PUTTING IT IN PARK, THEN PUSHING START. THE CAR HAS LESS THAN 10K MILES. DEALERSHIP CAN'T FIND CODE OR REPLICATE THE ISSUE. INTERNET SEARCHES INDICATE IT IS AN ISSUE AND OTHER MAKES AND MODELS HAVE BEEN RECALLED, BUT WITHOUT A CODE THE DEALERSHIP DOESN'T KNOW WHAT TO DO. I WAS NEARLY REAR-ENDED BECAUSE IT DOESN'T HAPPEN UNTIL YOU TAKE YOUR FOOT OFF THE BRAKE AND PRESS THE GAS TO MOVE FORWARD, AND THAT'S…
Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.
Data completeness
10 unique complaints in this selection. Analysis snapshot: 2026-10-01.
60.0%Usable mileage6 / 10 records
100.0%Valid incident date10 / 10 records
100.0%Valid filing date10 / 10 records
100.0%Ordered incident and filing dates10 / 10 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
Component
2015
Structure
330.0%ODI 11607566 · 74,000 mi
The contact owns a 2015 Mercedes-Benz C400. The contact stated while driving 55-60 MPH, the front roof panel separated and flew off. The contact drove back and was able to pick the front roof panel off the road. The vehicle was taken to the dealer, where it was determined that the front roof panel needed to be replaced. Additionally, the dealer informed the contact that the recall repair of NHTSA Campaign Number: 21V197000(Structure) was previously performed on the vehicle, and the additional related repair would be at the contact's expense. Th…
Panoramic glaaa sunroof mounting bracket made of cheap thin plastic that it breaks easily allowing the panoramic glass roof to fly off the car if driven while open.
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
ENGINE RANDOMLY STALLS AFTER SITTING AT RED LIGHT/OR WHILE IN TRAFFIC. ALL WARNING/DASHBOARD LIGHTS COME ON AND YOU CAN ONLY START THE CAR BY PUTTING IT IN PARK, THEN PUSHING START. THE CAR HAS LESS THAN 10K MILES. DEALERSHIP CAN'T FIND CODE OR REPLICATE THE ISSUE. INTERNET SEARCHES INDICATE IT IS AN ISSUE AND OTHER MAKES AND MODELS HAVE BEEN RECALLED, BUT WITHOUT A CODE THE DEALERSHIP DOESN'T KNOW WHAT TO DO. I WAS NEARLY REAR-ENDED BECAUSE IT DOESN'T HAPPEN UNTIL YOU TAKE YOUR FOOT OFF THE BRAKE AND PRESS THE GAS TO MOVE FORWARD, AND THAT'S…
My boyfriend and I were driving my 2015 MB C400 down the road in November 2020 and it was a beautiful day out so we decided we would open the sunroof to get some fresh air. I was driving so my boyfriend pressed the button for the sunroof to open. As the sunroof was opening, there was a cracking and popping sound coming from above us. We immediately pulled over at a gas station to see what was happening. Upon getting out of the car and looking closer at the sunroof, we noticed many cheap plastic components that were just broken and crumbled layi…
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
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
Component
Mileage range (25th–75th percentile)
Median
Usable records
Examples
Structure
Too few reports for a range
100,000 mi
3 (sparse)
ODI 11607566 · 74,000 mi
The contact owns a 2015 Mercedes-Benz C400. The contact stated while driving 55-60 MPH, the front roof panel separated and flew off. The contact drove back and was able to pick the front roof panel off the road. The vehicle was taken to the dealer, where it was determined that the front roof panel needed to be replaced. Additionally, the dealer informed the contact that the recall repair of NHTSA Campaign Number: 21V197000(Structure) was previously performed on the vehicle, and the additional related repair would be at the contact's expense. Th…
The contact owns a 2015 Mercedes-Benz C400. The contact stated that while the vehicle was being serviced, the contact was informed by the dealer that the rear subframe needed to be replaced. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 112,000.
The contact owns a 2015 Mercedes Benz C400. The contact stated that while vehicle was inside a high-pressure car wash, water leaked from the roof panel at the front of the vehicle, nearby the front windshield. The cause of the failure was not yet determined, and the vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in the NHTSA Campaign Number: 23V854000 (STRUCTURE). The contact stated that the vehicle had experienced the failure listed i…
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
ENGINE RANDOMLY STALLS AFTER SITTING AT RED LIGHT/OR WHILE IN TRAFFIC. ALL WARNING/DASHBOARD LIGHTS COME ON AND YOU CAN ONLY START THE CAR BY PUTTING IT IN PARK, THEN PUSHING START. THE CAR HAS LESS THAN 10K MILES. DEALERSHIP CAN'T FIND CODE OR REPLICATE THE ISSUE. INTERNET SEARCHES INDICATE IT IS AN ISSUE AND OTHER MAKES AND MODELS HAVE BEEN RECALLED, BUT WITHOUT A CODE THE DEALERSHIP DOESN'T KNOW WHAT TO DO. I WAS NEARLY REAR-ENDED BECAUSE IT DOESN'T HAPPEN UNTIL YOU TAKE YOUR FOOT OFF THE BRAKE AND PRESS THE GAS TO MOVE FORWARD, AND THAT'S…
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.
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
Month
Complaints
Campaigns announced
Examples
2024-11
1
None
ODI 11623121 · 112,000 mi
The contact owns a 2015 Mercedes-Benz C400. The contact stated that while the vehicle was being serviced, the contact was informed by the dealer that the rear subframe needed to be replaced. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 112,000.
The contact owns a 2015 Mercedes Benz C400. The contact stated that while vehicle was inside a high-pressure car wash, water leaked from the roof panel at the front of the vehicle, nearby the front windshield. The cause of the failure was not yet determined, and the vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in the NHTSA Campaign Number: 23V854000 (STRUCTURE). The contact stated that the vehicle had experienced the failure listed i…
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.
2015: 3 complaints
Equal observation windows
Model year
Through age 0
Through age 1
Through age 2
2015
1
2
3
Date coverage across each selected cohort
Date basis for all complaints in selected model years
Year
Incident dates used
Filing date fallbacks
Excluded dates
2015
10
0
0
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
Component
Structure
Structure:Body
Electrical System
Electronic Stability Control (Esc)
Engine
Suspension
Unknown Or Other
Vehicle Speed Control
Structure
—
0
0
0
0
0
0
0
Structure:Body
0
—
0
0
0
0
1ODI 11595949
My boyfriend and I were driving my 2015 MB C400 down the road in November 2020 and it was a beautiful day out so we decided we would open the sunroof to get some fresh air. I was driving so my boyfriend pressed the button for the sunroof to open. As the sunroof was opening, there was a cracking and popping sound coming from above us. We immediately pulled over at a gas station to see what was happening. Upon getting out of the car and looking closer at the sunroof, we noticed many cheap plastic components that were just broken and crumbled layi…
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
My boyfriend and I were driving my 2015 MB C400 down the road in November 2020 and it was a beautiful day out so we decided we would open the sunroof to get some fresh air. I was driving so my boyfriend pressed the button for the sunroof to open. As the sunroof was opening, there was a cracking and popping sound coming from above us. We immediately pulled over at a gas station to see what was happening. Upon getting out of the car and looking closer at the sunroof, we noticed many cheap plastic components that were just broken and crumbled layi…
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
WHILE DRIVING THE VEHICLE ON THE HIGHWAY AT 70 MPH, THE CRUISE CONTROL SHUT OFF AND THE CAR BEGAN TO SLOW DOWN. I WAS ABLE TO MAINTAIN CONTROL AND NOTICED 3 ERROR MESSAGES INCLUDING: ESC INOPERABLE, CRUISE CONTROL INOPERABLE, AND COLLISION PREVENTION PLUS INOPERABLE. I WAS ABLE TO CONTINUE DRIVING AND WHEN I WENT TO ACCELERATE FROM A STOP LIGHT, THE ACCELERATOR WAS UNRESPONSIVE AND TOOK SEVERAL SECONDS FOR THE VEHICLE TO MOVE ALMOST CAUSING AN ACCIDENT FROM A CAR TRAVELING CLOSE BEHIND ME. ALL OF THIS HAPPENED WHILE I WAS DRIVING THE VEHICLE…
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.
1 patterns with matching reports.
Stalling or loss of power
1 mentions · 10.0% of complaints
Median mileage: 9,700 mi (1 usable records).
ODI 11021610 · 9,700 mi
ENGINE RANDOMLY STALLS AFTER SITTING AT RED LIGHT/OR WHILE IN TRAFFIC. ALL WARNING/DASHBOARD LIGHTS COME ON AND YOU CAN ONLY START THE CAR BY PUTTING IT IN PARK, THEN PUSHING START. THE CAR HAS LESS THAN 10K MILES. DEALERSHIP CAN'T FIND CODE OR REPLICATE THE ISSUE. INTERNET SEARCHES INDICATE IT IS AN ISSUE AND OTHER MAKES AND MODELS HAVE BEEN RECALLED, BUT WITHOUT A CODE THE DEALERSHIP DOESN'T KNOW WHAT TO DO. I WAS NEARLY REAR-ENDED BECAUSE IT DOESN'T HAPPEN UNTIL YOU TAKE YOUR FOOT OFF THE BRAKE AND PRESS THE GAS TO MOVE FORWARD, AND THAT'S…