Mercedes-Benz C-Class Complaints

3,817 consumer complaints on file.

#11521006May 8, 2023
SERVICE BRAKES, HYDRAULIC, STRUCTURE
The contact owns a 2012 Mercedes-Benz C300. The contact stated that while his wife was driving at an undisclosed speed, she heard an abnormal sound coming from the rear of the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed that the subframe wheel assembly needed to be replaced. No warning lights were illuminated. The vehicle was repaired; however, the contact stated that he received an unknown manufacturer’s recall for the subframe assembly which it was then taken to the dealer, and the contact was informed by the technician that the rear brake line was leaking and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was informed that the VIN was not included in a recall. The failure mileage was approximately 120,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520828May 7, 2023
ENGINE
Crank case breather assembly needed replacement at 31,200 miles. Service mech. Advised the leaking area (oil) could not be repaired since Mercedes does not sell replacement parts and entire assembly needs to be replaced. March advised Mercedes is aware of issue and has redesigned the entire assembly. Cost for part was $400+ and labor to install was $1000. This issue is common as seen on internet and should warrant a recall refund to customers.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520723May 6, 2023
ENGINE
The PCV Valve/crankcase has broken 3 times on this car with different repairs and parts. This is happening very commonly to these cars and may cause significant safety issues. The code is P052E
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520590May 5, 2023
UNKNOWN OR OTHER
On May 3, 2023 I experienced an issue in which the sunroof on my 2017 C300 cert pre-owned with 51,000 miles Benz imploded out of nowhere while driving. My dad who I was taking to the doctors was also in the car resulting in both of us having fragments of glass on us. The problem has been reported to the insurance company and dealer the same day. There were no issues with the sunroof before the event happened.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520609May 5, 2023
ENGINE
Positive Crankcase Valve faulty causing car to buck during moderate acceleration especially when accelerating onto an interstate on an on ramp.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520487May 4, 2023
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
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 manufacturer was not notified of the failure. The failure mileage was 1,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520209May 3, 2023
ENGINE
my engine light came on. When I took the car to get diagnosticated message P052E showed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520243May 3, 2023
FUEL/PROPULSION SYSTEM, ENGINE
My car failed smog test due to code P052e positive crankcase ventilation regularly valve. Upon some research, I found that this is very common issue with this car. The repair costs +$2000 before tax at the dealership. Please consider this complain as this issue is very common with this make model and unfortunately many drivers don’t realize that it’s due to faulty system.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11520161May 2, 2023
UNKNOWN OR OTHER
I’m unsure but my check engine light came on showing something about my pvc valve needing replacement while I was driving
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11519789May 1, 2023
SUSPENSION
Purchased said vehicle from Rahal Mercedes Benz (Wexford PA 15090) in 9/2021. Used. Took in for PA inspection in 10/2022 (to Rahal service dept). Mechanic noticed rear subframe was rusting (I was not aware of this until this point; was never disclosed to me by Rahal in their printed pre inspection vehicle repost; I have this document). Told me would need re-placed sometime in 2023. Never mentioned a recall. I have not received any recall. Prove from MB. Conversation with said mechanics e railed I would have to pay for this repair out of pocket. This is a major safety issue. MN should 100% cover the cost/all costs of the subframe and any issues caused by said subframe.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11519686April 30, 2023
FUEL/PROPULSION SYSTEM, ENGINE
The code I received is p052e from the check engine light. This can cause the car to stall out mid way through driving and cause a potential fatal accident. This is a common issue across C300 And GLC benz.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11519273April 27, 2023
STEERING
The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 65 MPH, the power steering assist warning light illuminated, and the steering wheel became firm. The contact was able to pull over safely on the side of the road. The vehicle was towed to the dealer and the dealer stated that steering column was experiencing an electric failure, and that the rack and pinon needed to be replaced, and the steering module needed to be reprogramed. The vehicle was not repaired. The manufacturer was contacted, and the manufacturer stated that the VIN was not under any recall. No further assistance was provided. The failure mileage was 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11518822April 25, 2023
FORWARD COLLISION AVOIDANCE: DYNAMIC BRAKE SUPPORT/BRAKE ASSIST
The contact owns a 2022 Mercedes-Benz C300. The contact stated that while driving approximately 40 MPH, the active brake assists erroneously activated, causing the vehicle to abruptly stop in the middle of the road, nearly causing a rear end collision by another vehicle. During the failure there were no vehicles or objects present in front of the vehicle to cause the active braking system to be activated. The vehicle was taken to the local dealer who was unable to determine the cause of the failure. The manufacturer was notified of the failure. The failure mileage was 4,500.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11518471April 22, 2023
UNKNOWN OR OTHER, STRUCTURE
FRONT STATIONERY PANEL FAIL OFF WHOLE DRIVING I SEE IT IS IN RECALL BUT DO NOT SEE MY VIN HOW CAN I GET THIS FIXED PER RECALL
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11518035April 20, 2023
FUEL SYSTEM, GASOLINE, SERVICE BRAKES
The contact owns a 2012 Mercedes-Benz C300. The contact stated while driving at various speeds, extra brake travel time was needed to stop the vehicle. There was no warning light illuminated. The contact had taken the vehicle to an independent mechanic where the vehicle was purchased, and he was informed that the failure was caused by the new brake pads placed on the vehicle. The contact eventually took the vehicle to a dealer and was informed that the fuel tank and brake lines were corroded; and the contact was provided an estimate for the repair. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 96,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11517601April 18, 2023
SUSPENSION
The rear subframe rusted prematurely and broke off important mounts for the suspension and steering. I was driving and had to hard brake. This cause the back end of the car to swerve and almost lose control. I then heard a knocking sound when I pressed the brakes, prompting me to take it into the shop. There I was informed the the subframe was rusted and the vehicle wasn’t safe to drive. I filed a claim with my insurance, but they said it’s wear and tear.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11517697April 18, 2023
TIRES
The contact owns a 2021 Mercedes-Benz C43 AMG equipped with Continental Tires, Tire Line: Sport Contact, Tire Size: 225/40/R19, DOT Number: LMJAD5UR (Front Tires) and Pirelli Tires, Tire Line: P Zero, Tire Size: 225/40/R19, DOT Number: 93X2Y082 (Rear Tires). The contact stated while driving approximately 70 MPH, the TPMS warning light illuminated. The contact inspected the vehicle and became aware of blisters on the sidewall of the tires. The vehicle was taken to an unknown dealer where the failure was confirmed. The tires were replaced. The manufacturer was not notified of the failure. The approximate failure mileage was 12,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11517369April 17, 2023
ENGINE
A very common problem with mercedes. PCV ventilation valve. Fault code P052E
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11517301April 16, 2023
UNKNOWN OR OTHER
Rear camera doesn’t work
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11517021April 14, 2023
STRUCTURE:BODY
Good morning. I previously reported incident [XXX] about a subframe issue w/ my 2011 Mercedes Benz C-300. This morning I received a warranty extension from the originally expired 4 years/50,000 mile to 20 years/unlimited miles. The notice says that repairs must be performed by an authorized Mercedes Benz dealership. I had the auto fixed privately and filed the NHTSA request. I called their CS and was told that I would need to visit a dealership, but to be honest I think that would be fruitless. Can MB be compelled to reimburse me for the cost incurred? Regards, [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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