Mercedes-Benz C-Class Complaints

3,817 consumer complaints on file.

#11430028August 22, 2021
FUEL/PROPULSION SYSTEM
MB USA extended the warranty coverage on the low pressure fuel hoses that connects to the high pressure fuel pump. The reason is "under certain cold ambient conditions during a cold start of the engine, the low pressure fuel hose at that connection may experience slight fuel weeping". MB USA, however, ruled out a safety risk. NHTSA needs to investigate it. If MB USA found the fuel pressure line is defective, they needed to do a recall. I believe it must be a recall as fuel leaks is not only a safety risk but also a serious health hazard to the occupants. What if the occupants have sinusitis and don't smell well. What if the leaks is too small to smell enough but can still be a health issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11429955August 21, 2021
ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: WARNINGS
Light came on tonight and stayed on, Collinsion prevention assist inoperable. Car has been involved in any collision for this system to quit out of the blue
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11429743August 19, 2021
STRUCTURE
The contact owns a 2017 Mercedes-Benz C300. The contact received notification of NHTSA Campaign Number: 21V197000 (Structure) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated while driving approximately 60 MPH, the sunroof panel detached from the vehicle. The approximate failure mileage was 39,000. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11429627August 18, 2021
UNKNOWN OR OTHER
On August 18th, 2021 the roof panel between the windshield and the panoramic roof completely detached while driving on the highway. Luckily no accidents or injuries are reported. Safety recall for this issue has been issued since March 2021 but the factory hasn't produced the parts to send to the dealerships to make the necessary repair to this day. The car is currently unusable and unsafe to drive. Even if the dealership attempts to re-attach another panel they won't have the right adhesive, instructions, and panels that the engineers in the Mercedes factory redesigned to remedy this issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11429489August 17, 2021
AIR BAGS, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, FORWARD COLLISION AVOIDANCE: WARNINGS
I bought a car that had an light accident and turns out to be missing the collision sensor in addition to bad battery that i had to change and had issues with recoding the airbags which are not working now.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11429506August 17, 2021
SEAT BELTS
The contact owns a 2017 Mercedes-Benz C43 AMG. The contact received a recall notification for NHTSA Campaign Number: 21V032000 (Seat Belts) however, the dealer informed the contact that the part for 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 manufacturer was notified of the issue but provided no assistance. The contact had not experienced a failure. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11428078August 6, 2021
AIR BAGS
On July 17, 2021 I was driving at the posted rate of speed down I-275 Southbound here in Michigan. All of the sudden and without warning, there was a loud explosion which happened, from as near as I can tell, in the driver's side windshield pillar, where there is an airbag. No warning lights came on, and the car did not change its driving characteristics. Only after I reached my destination and searched under the dash, and every where else (including the exterior), did I find that the plastic "cover" on the pillar is pushed away from the pillar and much more loose than the plastic cover on the passenger side. Since the incident, I have had severe tinnitus in my left ear which was about 15-18" away from it. The air bag did not deploy. I did not hit a pothole, did not hit a bump, did not hit another vehicle.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11428131August 6, 2021
ELECTRICAL SYSTEM, STEERING
Vehicle completely shut down while traveling on interstate. Ignition switch malfunction and went dead, also steering column locked causing me to lose control of steering functions.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11427640August 3, 2021
STRUCTURE:BODY, POWER TRAIN
On July 1, my daugther who is driving the car since about 8 months noticed a strange noise coming from the rear of the car. Since I was in Europe at that time I could not give her any assistance. On July 16 we both took a drive to Rhode Island to visit a college. I was the one driving, and I could also hear the noise coming from the rear. On the highway there was a back-up developing and I had to hit the brakes a littler harder. In doing so. the car was very unstable and it look like if the rear was going to overtake the front of the car. I was very scary even for myself who is a long time experience driver. After returning home I took the car to a mechanic and have him look at it. The resulting diagnosis revealed that the subframe was completely rusted out and was about to get disconnected from the under carriage of the car at any moment. The mechanic had a hard time to find a replacement part, and was finally able to locate an OEM subframe in California, the only one in the US. The price for the part alone was $1,500. I had no choice other than to have the car repaired at the mechanic since it was at that time undrivable. The total repair was almost $3,200. I took 2 pictures of the replaced subframe (see attached). The car is a 2011 MB C300-4-matic with just 100,800 miles on it. The was purchased used, with about 12,000 miles, in Febr. 2012 from Mercedes Benz of Westford, MA, which had used the car as a loaner/company car. The car was well maintained, used up until 2020 by my daughter's mother. She then bought herself another, newer C300 (2017 model) and decided to gift her older car to the daughter instead of trading it in. We thought, we knew a lot about the car and considered it a low risk transfer for a new, still learning driver. I will also file a formal complaint with Mercedes Benz if I have figured out the correct contact point. The internet shows, other people have experienced similar situations. And eventually, see also your ID-# 10504684 and 11023618.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11427645August 3, 2021
STRUCTURE
The contact owns a 2015 Mercedes-Benz C300. The contact’s wife stated while driving 70 mph, the roof panel separated and detached from the vehicle. The vehicle was diagnosed but not repaired. Upon investigation, the contact associated the failure with NHTSA campaign number: 21V197000 (Structure) however, the part to do the recall repair was not yet available. The manufacturer was informed of the failure but offered no assistance. The failure mileage was approximately 57,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11427465August 2, 2021
ENGINE
I was told by the Mercedes Benz service center I take my car to that the timing chain and cam adjusters failed. I have a Mercedes Benz 2013 C250, with only 58,000 miles on it. I have my car serviced on time. I was driving my car on the highway, thank God I stopped at a local drugstore and when I tried to turn my car back on, only the lights will come on. It would not start up, and I had to have my car towed to the MB Hunt Valley service center where I get my car serviced. The Service Rep told me I had to have the timing chain, camadjusters, and lower guide rails replaced costing $6000. There is a extended warranty on the camadjusters which took the price down to 3600 which is still pricey. Which makes me wonder shouldn't the timing chaing also be under extended waranty. This type of event should only happen at least after the car reaches 100,000 miles. I have called Mercedes Benz customer service and awaiting for someone to call me back to see if they can assist. Awaiting a response as of 8/2/2021. I called after getting diagnoses which was 7/30/21. I have read numerous other reports of this same exact issue happening to other people. This is a extreme risk and safety matter that needs to be addressed by Mercedes Benz as a recall. Being newer model cars, the timing chain and camshaft adjusters should not fail, and most definitely not fail at 58,000 miles. Please look into this before someone gets hurt.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11426481July 26, 2021
SEAT BELTS
The contact owns a 2013 Mercedes-Benz C300. The contact stated that the front driver’s side seat belt would not retract and was unable to lock and secure the driver. Also, the rear driver’s side seat belt ceased and was unable to pull out and lock to secure the driver’s side rear seat passenger. The rear passenger’s side seat belt failed to retract and would not secure the passenger side rear seat passenger. The cause of the failure was not yet determined. The local dealer and manufacturer were not notified of the failure. The approximate failure mileage was 110,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11426152July 23, 2021
SEAT BELTS
For the past several weeks the seat belt warning light goes on and the chime sounds intermittently while I am driving with the driver seat belt engaged. Also; while this is happening, the seat belt pretensioner repeatedly deactivates and activates. The vehicle is available for inspection at my home in Pleasant View, Utah. Can my safety be compromised if the pretensioner is not activated? Will the driver air bag function if it thinks the seat is empty? The Mercedes Dealer was no help; all the Customer Service person could tell me was there was not a Recall on my vehicle. "Just make an appointment and we will do a Diagnostic Inspection for $179." I have made an appointment with my local Mechanic on Thursday, July 29, and hope that he can fix it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11425652July 20, 2021
SEAT BELTS:FRONT:RETRACTOR
The contact owns a 2017 Mercedes-Benz C300. The contact stated that the driver’s and passenger’s side front seat belts failed to retract completely upon release. Due to the failure, the seat belts would fall to the floor upon release from the buckle. The contact then received notification of NHTSA Campaign Number: 21V032000 (Seat Belts). The contact had taken the vehicle to the dealer and had the recall serviced however, upon return of the vehicle, the failure persisted. The contact was willing to supply the part but not the labor costs, he was informed that the retractor assembly needed to be replaced. The contact was informed that the seat belt retractors were not under recall. The contact was provided an estimate for the repair which he declined. Mercedes was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 20,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11425681July 20, 2021
ELECTRICAL SYSTEM, EXTERIOR LIGHTING
The rear tail light housing harness melted due to an electrical issue. This caused my rear tail light & break lights not to function.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11425686July 20, 2021
SERVICE BRAKES, AIR BAGS
The contact owns a 2014 Mercedes-Benz C250. The contact stated that while her daughter was driving at various speeds, she depressed the brake pedal but it hesitated to respond. As a result, excessive force was applied to the brake pedal in order to slow down the vehicle. Due to the failure, the driver lost control of the vehicle and crashed into the barrier wall and the metal fence. No air bags were deployed. The contact's daughter sustained a fractured nose, lip laceration, and other unknown facial injuries due to the driver hitting the steering wheel during the impact. No medical attention was contacted yet but will be in the future. A police report was filed. The police transferred the vehicle from the crash site to a tow yard where the police are awaiting the insurance adjustor. Damages were to the front end. The manufacturer nor the dealer was contacted about the failure. The failure mileage was approximate 60,000
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11425478July 19, 2021
SERVICE BRAKES
Brakes failed to deploy, randomly, during recent trip; VERY DANGEROUS; pressed brakes, would NOT engage and car kept moving and would not stop; pushed car into P (Park) to stop moving; just completed a 225 mi trip from Chicago to Detroit Metro area traveling at speeds between 65-70 mph with no issue, all service on vehicle is and has been conducted via Mercedes authorized dealers, had vehicle in for service on morning of trip for overview and safety check prior to leaving and no known issues; after coming off freeway engaged brakes upon pulling into neighborhood and vehicle brakes failed completely-stopped engaging; NO NOTIFICATION; NO INDICATOR LIGHTS OR READ OUT OF ISSUES related to brakes was indicated on dashboard; had we been on the freeway at the time of incident coming off an exit ramp at high speed we would have suffered a grave result, brakes failed completely. THIS IS A DANGER and UNACCEPTABLE for this manufacturer; vehicle has been towed to dealership, is not drivable, and is currently being assessed. This has been widely reported on other sites, regarding this specific vehicle, Mercedes C250, my model year is 2012; I researched this issue, yesterday, to determine what could possibly have gone wrong as vehicle was not leaking fluids and NO indication of issues during recent diagnostics and safety check two days prior. Not having sufficient braking capability with NO warning or indication is DANGEROUS, a liability to manufacturer and should be investigated immediately. Thank you.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11425064July 16, 2021
STEERING
2008-2011 Mercedes models were manufactured with cheap electronic steering locks that fail often. While I haven’t experienced a failure while driving, the system is and has been extremely problematic and unreliable. It is highly plausible that the system could fail while driving due to the cheap components and unreliable and faulty programming. I urge the NHTSA to look into this and require Mercedes to replace these ESL’s with a safer, more reliable steering component that doesn’t have the potential to suddenly lock or unlock due to a unforeseen failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11424925July 15, 2021
STRUCTURE:BODY
Panoramic Sunroof has had several problems previously. While driving 65 mph the plastic roof piece between the windshield and sunroof suddenly and unexpectedly dislodged and flew off the car.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11425036July 15, 2021
SUSPENSION
The rear sub-frame of my Mercedes failed and resulted in a dangerous situation due to left rear suspension attachment point breaking free. Braking became uncontrollable. This seems to be a common problem in the 2008-2014 C300 Mercedes based on a quick scan of the internet.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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