2015 Mercedes-Benz C400 Owner Complaints

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 in the recall. The local dealer was not contacted. The failure mileage was 100,000.

NHTSA ID

11679248

Incident

Feb 8, 2025

Mileage

100,000 mi

Rear subframe cracked while driving and rear of car sways from one lane to the next when brakes are applied. Car is not safe

NHTSA ID

11641763

Incident

Jan 1, 2025

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.

NHTSA ID

11623121

Incident

Oct 31, 2024

Mileage

112,000 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. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 23V854000(Structure). The manufacturer was not notified of the failure. The failure mileage was approximately 74,000.

NHTSA ID

11607566

Incident

Aug 9, 2024

Mileage

74,000 mi

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 laying inside the sunroof tract. We removed the broken pieces and then tried to close the sunroof several times. T Each time, the sunroof went into the closed position BUT immediately went straight back to the popped up position and would not completely close again. I took my car to the MB dealership in Athens, Ga where they told me it would be almost $2500 to repair which I did not feel as if I should be held responsible for as I had just purchased the car in January 2020 only 11 months earlier. I was in fear that the sunroof would detach from the car and cause serious injury to any motorist behind me. I also have a [XXX] son who is now scared to ride in my car!! After doing much research on this issue, I have found that this is truly a common problem with this MB model. I have reached out to the corporate office a few times and they only tell me that there is no active recalls with my cars VIN. It is completely unacceptable that MB is fully aware of this issue yet they continue to disregard the potential harm to other motorists. Please help!!! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11595949

Incident

Nov 15, 2020

My car failed PA State inspection due to a hole and rusted rear subframe. I have determined that there is a recall associated with this issue but that my vehicle just missed the recall limit. The recall affected 2008-2015 models (C Class with chassis 204). My vehicle is a 2015 C Class with chassis 205. It is evident that my vehicle has the same structural/construction defects as the previous years and should have been included in this recall. I have provided photographic evidence (attached/uploaded below). This is a very expensive repair that I should not have to pay for. Please review and consider having this included in the recall process so that I can be reimbursed for this costly repair as it is the result of a faulty construction process. Thank you. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11570624

Incident

Feb 7, 2024

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.

NHTSA ID

11431700

Incident

Aug 27, 2021

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 WHEN THE ENGINE SHUTS OFF COMPLETELY. THIS HAPPENS RANDOMLY AND HAS HAPPENED SEVERAL TIMES.

NHTSA ID

11021610

Incident

Aug 29, 2017

Mileage

9,700 mi

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 TO THE DEALERSHIP FOR ITS FIRST SERVICE. THE DEALER WAS NOTIFIED OF THE PROBLEM AND IS INVESTIGATING THE ISSUE.

NHTSA ID

10819922

Incident

Jan 13, 2016

Mileage

5,300 mi

THE PANORAMIC SUNROOF IN MY CAR EXPLODED AT APPROXIMATELY 6.45AM ON MONDAY, JUNE 29TH 2015. THE CAR WAS PURCHASED NEW FROM MERCEDES BENZ IN PARAMUS ON SATURDAY, JUNE 27TH, 2015. THE CAR HAD 146 MILES ON THE ODOMETER. I WAS IN NJ AND I WAS TRAVELING WEST ON I-78 (EXPRESS LANES) AT APPROXIMATELY 65MPH. THERE WERE NO OTHER VEHICLES IN CLOSE PROXIMITY, THERE WAS A VEHICLE TRAILING A FEW CAR LENGTHS BEHIND ME. THE ROAD WAS RELATIVELY SMOOTH AND THE WEATHER WAS DRY. NO PROJECTILE HIT THE GLASS PRIOR TO IT EXPLODING. WHEN THE SUNROOF EXPLODED, ALL I HEARD WAS A LARGE BANG AND THEN GLASS FALLING INTO THE CAR AND ALSO 'EXITING' THE CAR. THE GLASS DEBRIS LEFT SIGNIFICANT PITTING ON THE TRUNK OF THE CAR. I ESTIMATE 25% OF THE GLASS CAME INTO THE CAR. I SWERVED INTO TO THE EMERGENCY LANE AND STOPPED IN THE EMERGENCY LANE.

NHTSA ID

10780092

Incident

Jun 29, 2015

Mileage

146 mi