Mercedes-Benz C-Class Complaints

3,817 consumer complaints on file.

#11595949June 23, 2024
STRUCTURE:BODY, UNKNOWN OR OTHER
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)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595996June 23, 2024
ENGINE
P052E positive crankcase ventilation regularly valve
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595640June 21, 2024
UNKNOWN OR OTHER
The vehicle is not passing emission inspection because the Positive Crank Case Valve/Ventilation failed to work after 48K miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595223June 19, 2024
UNKNOWN OR OTHER
Crankcase ventilation valve. PCV valve has failed causing check engine light. Very common issue on this model according to my research. The dealer does not have this product in stock to facilitate a repair and no support to find the part. Very difficult when trying to pass an emissions test and this is the last thing holding that back.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595236June 19, 2024
SUSPENSION
took car in for oil change and was informed that car should not be driven because rear subframe had rotted thru and rear link was completly unattached and hitting gas tank. havent had a response from 2 dealerships this car is unstable and hitting the brakes requires a lot of attention to keep on road
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11594999June 18, 2024
SERVICE BRAKES, UNKNOWN OR OTHER, ELECTRICAL SYSTEM
I was driving and all of a sudden a loud sound started occurring and the sound appeared to come from my breaks as if they were about to give out. The car is currently at Mercedes getting looked at. I’m concerned for my safety as I have taken this car in for two other issues in the last couple of months.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595111June 18, 2024
AIR BAGS
The contact owned a 2014 Mercedes-Benz C250. The contact received notification of NHTSA Campaign Number: 19V010000 (Air Bags) and requested to be removed from the recall distribution list. The manufacturer was contacted regarding the issue. The local dealer was not notified.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11594372June 14, 2024
ELECTRICAL SYSTEM, VISIBILITY:SUN/MOON ROOF ASSEMBLY
The contact owns a 2012 Mercedes-Benz C300. The contact stated that after opening the sunroof and then attempting to close the sunroof, the sunroof failed to fully close. The contact had to open and close the sunroof several times before the sunroof closed. Additionally, the contact stated that there was water entering the vehicle from the sunroof which caused electrical failures. The contact stated that the vehicle was drivable, but the "Anti-Theft" warning light illuminated. The contact stated that several other warning lights were later illuminated, and the vehicle would not start. The contact had the vehicle towed to a dealer who diagnosed the vehicle and determined that water had damaged the driver’s side electrical wiring harness. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 169,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11594063June 12, 2024
ENGINE
P0952 sensor part not available untill Dec 2024 I have documentation from my mechanic
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11593665June 11, 2024
STRUCTURE:BODY, STRUCTURE:BODY:DOOR:HANDLE:INTERIOR
Interior door handle becomes inoperative due to breaking of some internal element. This prevents leaving the vehicle. Of concern is that in case of emergency, the occupant cannot exit the vehicle. If power is affected, the windows cannot be lowered which is the only way to exit using the exterior door handle. This is a well known defect of this series of Mercedes Benz to which the manufacturer has not accepted responsibility.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11593757June 11, 2024
STRUCTURE
The contact owns a 2015 Mercedes-Benz C300. The contact stated while washing the vehicle, he observed that the roof panel had become detached. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 21V197000 (Structure), but the VIN was not included. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was 90,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11593432June 10, 2024
ENGINE, STEERING, UNKNOWN OR OTHER
The car is not starting. no dashboard no lights no window function no seat function no radio. nothing. Ignition lights are not turning on and the car is dead. Car batteries were newly replaced but understand this could be EIS and Steering lock issues which is common in Mercedes Benz models. Why is Manufacturer not compensating / correcting for common errors on his Models?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11592771June 6, 2024
UNKNOWN OR OTHER
P052e positive crankcase ventilation valve. Check engine light triggered by this code.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11592633June 5, 2024
STRUCTURE
The contact owns a 2015 Mercedes-Benz C300. The contact received notification of NHTSA Campaign Number: 23V854000 (Structure) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated while driving 50 MPH, the panoramic plastic piece suddenly detached from the vehicle. The location where the piece was attached was fractured allowing wind and water to leak inside the vehicle. The dealer was contacted. The manufacturer was made aware of the issue. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 103,000. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11592656June 5, 2024
AIR BAGS
The passenger airbag was replaced under the Takata recall. Recently the airbag indicator light came on for the driver airbag. We have been notified by the dealership that this airbag needs replaced. They provided an estimate of $2,652.29. We reached out to Mercedes due to this being a safety issue and also due to the fact that the passenger airbag was replaced under a recall. They are unwilling to assist. It is illogical that just the passenger airbag is faulty in the recall but that the driver's airbag is fine as they came from the same manufacturer and installed when the vehicle was built. We are concerned about either deploying on its own or if it will deploy in an accident.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11592433June 4, 2024
SERVICE BRAKES, STRUCTURE:BODY, SUSPENSION
Took my car for a doorknob repair and was told the whole subframe is rotted. They told me not to drive the car on the highway. The car brakes very hard to the right and always goes right while making cranking noises. Car feels very unsafe. I paid a lot of money for this and own a 2012 c300 4matic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11592228June 3, 2024
ELECTRICAL SYSTEM
The electronic system, specifically the battery, failed and it is available for inspection upon request. The persistent battery drain caused the vehicle to become inoperable multiple times, including an incident where I was stranded 200 miles from home with my wife and dog, posing significant safety risks. Yes, the defect has been confirmed by the dealership’s service center multiple times. The vehicle has been inspected by the dealership’s service technicians. Yes, the first malfunction message appeared on [XXX] at 2:22 PM, a week after purchase. Multiple warning messages have appeared since then, including transmission malfunction, running lights malfunction, high beams malfunction, and additional battery malfunction. Defect Description: - Description of the Defect: Persistent battery drain and related electronic system issues. - Date First Appeared: [XXX], a week after purchase. - Subsequent Occurrences: Multiple instances including being stranded 200 miles from home due to a dead battery and transmission error. Repair Attempts: I have taken my vehicle to [Dealership Name] for repairs on multiple occasions. Despite these efforts, the defect persists. Below are the details of each repair attempt: - Repair Attempt 1: [XXX], 2023, Battery replaced. - Repair Attempt 2: [XXX], 2024, Dealer refused to replace battery and simply charged it. Issue persisted the next day. - Repair Attempt 3: [XXX] 2024, Dealer didn't get back to me yet. Roadside Assistance Calls: - [XXX] 2022: First roadside assistance call for a dead battery. - [XXX], 2024: Roadside assistance called again. - [XXX], 2024: Roadside assistance called again. - [XXX], 2024: Roadside assistance called again. 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
#11592299June 3, 2024
STRUCTURE:BODY
I currently have a 2017 Mercedes C300. The panel between the windshield and main panel of the panoramic roof (above the driver) is deteriorating and doesn’t not seem to be fully attached anymore. I had the exact same model but a year older in the past and this same part deteriorated and was subject to recall. I believe there is not only an issue with the part itself, but how Mercedes has bonded these parts to the roof.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11592155June 3, 2024
ELECTRICAL SYSTEM
I researched that the sunroofs on these models are faulty and have caused water/electrical damage under the carpeting and seats of the vehicles. That is what has happened with my 2011 C300 Sport.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11591967June 2, 2024
STRUCTURE:BODY, ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
I am wanting to add information to my original complaint. Tracking#11589822 When I called in the electrical issue to AAA the agent said this is a common problem on these cars. Next, I want to add photos the Mercedes of Fresno service department sent me during the 2nd time my car was taken in to be checked. I honestly don't remember off hand when the collision occurred, I have that paper work somewhere. I will find it and send it in also. I will also get paper work from the auto body place that fixed as much of the wiring that it could. There was also a video on line I will try to find again and send that in.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0

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