Mercedes-Benz C-Class Complaints

3,817 consumer complaints on file.

#11528405June 22, 2023
SUSPENSION, STRUCTURE:BODY
Rear Control Arm Broke off of the rusted Rear Sub Frame assembly which was confirmed and inspected by my mechanic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11528210June 21, 2023
FUEL/PROPULSION SYSTEM
My check engine light came on approximately one month ago. Once tested it indicated a fuel vapor leak. I pulled out of a driveway and a large stream of fuel spilled all over the roadway. Approximately 7 feet in length about 5 inches in width was on the road. I took it to a Mercedes repair shop and they informed me I had a fuel leak and that it was not safe to drive. There was corrosion and rust forming on the tank which seems very odd since the car is garage kept and we don't get much snow in Kentucky. My daughter rides in this car with me and they told me it is very dangerous and needs repaired. If I was to drive over a cigarette we could essentially blow up. I had a second shop look at it and they also informed me I had a fuel leak and would need to replace the fuel tank. I was told there was a recall on some models of Mercedes for this issue but can't seem to find one on my year make and model. Please help with this matter so my daughter and I can remain safe as well as others around us. Seems like we are in a ticking time bomb.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11528225June 21, 2023
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
The Mercedes just slams on the brakes for no reason. It's happened 3x and is very scary. According to Internet posts this is a common problem because of collision assist malfunction
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11527655June 19, 2023
POWER TRAIN
This has happened a couple of times to me so far. I have been driving down the road (today it was the highway) and my car fell out of gear into neutral and would not go back into gear unless I restarted the car. Every time it has happened, I have had to coast it to a safe spot to restart the car to get it back into gear. Not having power and needing to coast it to safety is a risk to others because I have no control to get myself to safety in some situations. No dealer has been able to reproduce it because of how infrequently it happens. It has happened 3 or 4 times in the last 15k miles. There were no warning messages or indications that it happened or was going to happen and no parts have been inspected. It is really scary when it happens and I hope it dosen't happen to anyone else.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11527619June 18, 2023
ELECTRICAL SYSTEM, ENGINE, BACK OVER PREVENTION: WARNINGS
Throughout the year, the car had many issues, the blind spot sensors and glass sensors didn't work, and it constantly showed that the stop/start system wasn't working. Twice, the car turned off by itself at a stoplight. Since everything is controlled through the car's large monitor, including the navigation, air conditioning, and all other functions, the monitor frequently shut off and it was necessary to turn it off and on again, or wait until the next day for it to work again. The scariest incident happened during a heavy rainstorm. I was driving on the road surrounded by other cars when my car suddenly stopped abruptly and began to park itself in the middle of the road. All sensors failed! The cameras were going in and out without stopping, all sensors were beeping loudly and flashing, the check engine light came on, and the blind spot sensors wouldn't turn off. I couldn't do anything with the car or control it. I turned the car off and on four times just to get it off the road. When I called Mercedes, they didn't think it was a serious problem and made me an appointment for a month later. I brought the car in, but they didn't give me any timelines or updates on what was happening with my car. I called them for five days, but they didn't even look at it. Please help me resolve the issue with my car and the dealership!
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11527138June 15, 2023
FUEL/PROPULSION SYSTEM, POWER TRAIN
I was just driving normally boom engine light comes on take it to the dealership and it come up as crank case vent line which they quoted me 2300$. I think this should be recalled I have seen so many people with the same issue I have actually had someone tell me this was the only major problems with the w205 c300 before this happened. I think it should be recalled because from what I’ve seen it happens to every single c300 just at different mileages. Hopefully this will get a recall because it seems to be a very common issue and should be covered by the dealer.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11527272June 15, 2023
AIR BAGS
The contact owns a 2015 Mercedes-Benz C300. The contact stated while starting the vehicle, the front driver’s side air bag warning light illuminated. The vehicle was taken to the dealer and the mechanic stated that the vehicle had experienced the failure listed in NHTSA Campaign Number: 16V081000 (Air Bags) however, the VIN was not included. The vehicle was not repaired. The manufacturer was contacted, and a case was filed. The failure mileage was 50,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11526868June 13, 2023
VISIBILITY:SUN/MOON ROOF ASSEMBLY
The contact owns a 2020 Mercedes-Benz C300. The contact stated while driving 55 MPH, the sunroof exploded without impact and glass fragments fell inside on the rear seats of the vehicle. The vehicle was taken to the dealer and the contact was informed that the sunroof needed to be replaced. The vehicle was not repaired. The contact stated that the failure had occurred twice. The manufacturer was contacted and stated that the vehicle was not under recall. No further assistance was provided. The failure mileage was 34,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11526691June 12, 2023
ENGINE
I have a problem that happened with a trouble code: P052E. It appears for now reason so the problem is in a faulty positive crankcase ventilation regulator valve. It costs a lot and not all the mechanics can do this type of work.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11526480June 11, 2023
STRUCTURE:BODY
The interior driver door handle failed during normal use. The cable attachment eyelet broke off, preventing the interior door handle from opening the door. This is a safety issue because it prevents occupants from exiting the vehicle quickly during an emergency situation. When this failure occurs, occupants must roll down the window and operate the exterior door handle, or crawl to another seat and exit using different door. The failed interior door handle is available. This failure appears to be a common problem that occurs on all doors.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11526403June 10, 2023
ELECTRICAL SYSTEM
My car had a problem about starting so I went to see a dealership. They got the job done and charged me $320. I just realized that in the invoice they used recall campaign to cover my car. However, they charged me $320 for no reason. Also, I never got any letter regarding to recall. How did they used recall campaign on my car?? And I recently had a sunroof derailed and they used the campaign again but charge me $2700 for it. And of course my car isn’t in their recall list?? I never got a letter as well
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11526152June 9, 2023
ELECTRICAL SYSTEM, ENGINE, FUEL/PROPULSION SYSTEM
Engine misfire, rough idle, shake when come to red light stop, burnt smell inside cabin, loss of power
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11526231June 9, 2023
FUEL/PROPULSION SYSTEM
Vent valve failed and needs repair. I could smell gasoline from my car weeks up to the check engine light going off. These leaking fumes are a hazard to the population and environment. This problem is quite common on Mercedes forums such as MBWorld. This car was diagnosed at an official Mercedes Benz dealership (New London, CT). The check engine light came on weeks after symptoms started to appear (on and off).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11526045June 8, 2023
FUEL/PROPULSION SYSTEM
This auto has approximately 45,000 miles on it and was found to have a fuel leakage issue on a high pressure pump and a fuel hose. Gas smell was very bad and upon inspection, gas was leaking at the hose / pump connection directly onto the engine. I had the defect repaired for a total of $1288.57 and tried to submit the claim to Mercedes. I found out that this issue has been a problem for Mercedes and they have published an extended warranty rather than issue a recall. Mercedes has now declined the complaint and because this seems to be a major issue I wanted to press this with your agency. Please let me know if you would like any additional documentation regarding this matter. Thank you - [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
#11525844June 7, 2023
ENGINE
Has 27000 miles out of warranty at 5 years. PCV code bad actuator. Looks like a common problem. Should be recalled.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11525564June 6, 2023
STRUCTURE:FRAME AND MEMBERS
The contact owns a 2013 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed, there was an abnormal tapping sound coming from underneath the vehicle. The vehicle was taken to an independent mechanic, who diagnosed that the subframe was corroded. The independent mechanic replaced the subframe; however, the failure recurred with the vehicle making an abnormal sound while driving. The vehicle was taken back to the independent mechanic, where the vehicle remained but was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 80,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11525268June 4, 2023
SUSPENSION
Failure of rear subframe causes car to lose control. Only found out about the problem after I received a Mercedes extended Warranty in mail March 2023, roughly 6 months after OEM Undercarriage failed and forced me to purchase another Undercarriage in cash/no insurance involved because part back ordered for many months. Car thus inoperable for roughly 4 months. At moment of the OEM failure, total loss of control. Mercedes refuses to reimburse for cost of replacing undercarriage regardless of the fact that failure occurred before notification and regardless of fact that part unavailable for months
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11525102June 2, 2023
ENGINE
Piston Connecting Rod broke and left the engine making holes in both sides of the block; Mercedes Benz rejected any responsibility because the car has a branded title. Currently a new engine (brand new) is being installed, my concern is that what will happen if the new engine has the same defective part and blew up again.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11524763June 1, 2023
FUEL/PROPULSION SYSTEM, ENGINE
Check engine light P052E, PVC valve. Dealer wants $2,500 for this repair and people are complaining that around 30k-50k it does it. Thats ridiculous. My dealer said its a common issue but Mercedes is not issuing a recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11524946June 1, 2023
ENGINE
My car is throwing the error code P052E. It keeps going on and off.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to Mercedes-Benz C-Class