Mercedes-Benz C-Class Complaints

3,817 consumer complaints on file.

#11611686August 29, 2024
SERVICE BRAKES, HYDRAULIC
The contact owns a 2011 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed and almost went all the way to the floorboard, and the vehicle failed to stop as needed, requiring an increased effort to bring the vehicle to a complete stop. No warning lights were illuminated. The vehicle was taken to the dealer but was not yet diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11611165August 27, 2024
SUSPENSION
Rotted rear sub frame due to poor design retaining water
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11611296August 27, 2024
ENGINE
Crankcase Ventilation Valve Problem code P052E71
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610913August 26, 2024
STRUCTURE, SUSPENSION:SUBFRAME/MOUNTING BRACKET
My car (vin [XXX] ) a 2015 Mercedes C300 is experiencing the same premature rusting on the subframe. I was told that while a lot of Mercedes are covered, mine is not for some reason but I'm at the same risk for the subframe getting holes in it and wheels breaking off. I only have 78,000 miles on my car, only have it serviced at the dealer and it has been garaged parked. This type of damage is not typical for a car that has been this well cared for and for the amount it has been driven. I called Mercedes to honor the $5600 or to extend the warranty should it have to be replaced and they said to file a claim here. 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
#11610577August 23, 2024
AIR BAGS, POWER TRAIN
Issue: Post-Airbag Deployment PCM Lockout Description: I am reporting a critical safety concern regarding the 2024 Mercedes-Benz C300. After an airbag deployment, the vehicle's Powertrain Control Module (PCM) is designed to automatically lock, preventing the engine from being restarted. While this feature is intended to enhance safety, it poses significant risks in certain emergency situations. For instance, in scenarios such as a landslide, attempted robbery, or a collision with wildlife in a remote area with poor cell signal, this design could leave the driver stranded without the ability to restart the vehicle and drive to safety. The inability to restart the vehicle could result in life-threatening situations where immediate evacuation from the scene is necessary. Recommendation: To mitigate this risk, I strongly suggest implementing an emergency override function that allows the driver to restart the vehicle after airbag deployment if they are in a clear state of consciousness. This could be achieved by incorporating a method such as long-pressing the ignition button, which would allow the driver to force-start the vehicle and improve their chances of survival in critical situations.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11610269August 22, 2024
STEERING:RACK AND PINION
The contact owns a 2018 Mercedes-Benz C300. While driving at various speeds, the contact could hear an abnormal sound from the transmission. The vehicle was taken to a local independent mechanic where it was diagnosed that the rack and pinion needed to be replaced. The vehicle was not repaired. The vehicle was then taken to a local dealer for diagnosis, but the failure could not be replicated. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 57,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610018August 21, 2024
UNKNOWN OR OTHER
The same part that was recalled the Starter Current Limiter has overheated again. The dealership is trying to charge for this same part for diagnostic, parts and labor. The car produces smoke around the battery and melted due to overheating. The battery is new. The car only turns over..then immediately overheats. Just because it was recalled and replaced does NOT mean it is perfect from defaulting again. Please have someone look into this matter.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11609586August 20, 2024
ENGINE, FUEL/PROPULSION SYSTEM
Keep getting a code P052E! Changed the oil and code went away for a few days then came back. Looked into getting it fixed and it seems like Mercedes has known about this issue and hasn’t called for a recall on this piece of equipment! Very costly to fix and says it needs to be replaced every 30k to 50k miles! At around 1k to 3k to fix everytime that’s something they should recall
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11609790August 20, 2024
AIR BAGS, STRUCTURE:BODY, STEERING
I purchased my vehicle from the Mercedes Benz Dealership and received a recall letter in the mail stating that driver side deployment may occur. After receiving notice I brought the car to the dealership to get the recall repaired. I've been driving around with a false sense of security believing that this issue was repaired. However, recently, while I was driving the driver side airbag unexpectedly and abruptly deployed and injured me. This is a major safety concern and car owners should be notified and made aware that the issue can still occur after the recall was repaired. I contacted Mercedes Benz and they did not issue any additional notices to inform customers of possible recall issue reoccurring due to manufacturer defects even after the repair was made. Additionally, I believe the driver side Takata airbag/inflators may have also been defective because of the injuries I incurred from the forceful explosive eruption of the airbag. MBUSA Campaign Number 2017120024 NHTSA Recall Number 17V627 Recall Start Date January 18, 2018 Recall Reported Date October 16, 2017 Component(s) 1709P46C62 Daimler AG (DAG), the manufacturer of Mercedes-Benz vehicles, has determined that certain MY12-17 C-Class, E-Class, E-Class Coupe vehicles (204, 207, 212 platform) have insufficient electrical grounding in the steering column components. In rare instances, if the steering column module is exposed to an electrostatic discharge, and if the steering column module clock spring is broken (due to wear), this could lead to an inadvertent deployment of the driver airbag. An inadvertent driver airbag deployment may cause a risk of injury to the driver and might increase the risk of a potential crash. A broken clock spring will illuminate the SRS warning light as well as display a warning message in the instrument cluster. An authorized Mercedes-Benz Dealer will install a sufficient ground to the steering column, and a protective ring to the steering column module.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11609107August 17, 2024
ENGINE
my car broke down while driving on the freeway, with only 58,000 miles the piston broke in cylinder 1 causing my car to loose power can cause an accident due to breaking down on freeway problem has been confirmed by a certified mechanic shop check engine light started flashing the moment the engine failed
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11608926August 16, 2024
STRUCTURE:BODY
The rear subframe is rusted through. It is a known manufacturing defect where water sits and rusts through the subframe. This was a recall on various Mercedes up through 2014. Multiple 2015 models have the same issue, including my Mercedes 2015 C300 4MATIC. I have a 2009 SLK with the same issue, which Mercedes previously fixed and acknowledged the manufacturing defect. The part number under the recall through 2014 is "212 250 3805" My 2015 car has part number "212 350 3605" that is not covered but still has rust issues. See attached picture The subframe can result in the back wheels falling off. My subframe is severely rusted through and a risk as a driver. A certified Mercedes dealer has inspected this issue and confirmed the safety but Mercedes will not cover the repairs for the known defect. There are no warning lights or indicators to this issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11608867August 15, 2024
ENGINE
error code P052E positive crankcase ventilation regulator valve performance
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11607884August 12, 2024
ENGINE
This vehicle was 2nd owner via Mercedes CPO. Note I bought this 2016 in 2018 on CPO, so recalls and technical notes were confirmed to be resolved. Had last taken to Mercedes dealership. Vehicle was always running fine until about 64,000+ miles when a check engine light came on while just entering the freeway and the vehicle started shaking violently. Continue to drive the vehicle for a few miles to get to the destination. Had the vehicle towed to the dealership and the dealership declared that cylinder 1 had lost 80% compression and had a cylinder 1 piston crack. This is consistent with numerous claims on Mercedes message boards. Mercedes dealership said that this vehicle was not drivable and was not covered under warranty. Requested $11,000 for single piston repair or $15,000 for full engine rebuild replacement. Please note that M274 engine has this complaint. The engine is apparently a Nissan collaboration designed i-4 turbocharged engine and car is assembled in Alabama. Internal Mercedes technical bulletins talk about piston wrist pins. So Mercedes know there is an issue and they know status on my vehicle. Mercedes dealers have sent me documents on piston wrist pins replacement status. The recommendation is to rebuild or buy new motor. So i have no confidence that an engine rebuild will fix the issue. All oil change maintenance records show proper oil at proper intervals and multi-point inspections. Correct use of premium gas was used. Vehicle had been inspected and given all green remarks on multipoint review before the incident. - Got It ? Requesting investigation as I have 3 vehicles, Toyota (2002), Honda(2008), and YES a Mercedes(2005) with 216K miles. So don't tell me that this is my fault.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11607986August 12, 2024
EXTERIOR LIGHTING
The contact owns a 2011 Mercedes-Benz C300. The contact stated while driving approximately 40 MPH, the messages to check the rear taillights and rear turn signals were displayed. The contact drove the vehicle to a local dealer who diagnosed the vehicle and determined that the rear taillight bulbs and connectors needed to be replaced. The vehicle was not repaired. The contact informed the dealer that the vehicle had been previously repaired under NHTSA Campaign Number: 14V177000 (Exterior Lighting). The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 85,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11607831August 11, 2024
ENGINE
P052E code for PCV vent valve
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11607748August 10, 2024
ENGINE
cracked piston in cylinder #1. After doing research this is a common problem in the m274 engine from 2015-2018 which Mercedes is aware of but does nothing. mercedes need to be held responsible and a recall issued. This isn't a 2 or 3 thousand dollar repair!! this repair is 6 figures!!! Please hold them acountable!!! THX
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11607489August 9, 2024
SEAT BELTS
The contact owns a 2017 Mercedes-Benz AMG C43. The contact stated that the front driver’s side seat belt failed to retract as intended. No warning light was illuminated. The vehicle was taken to a local dealer for diagnosis but was not repaired due to the cost. Upon further investigation, the contact related the failure to NHTSA Campaign Number: 21V032000 (Seat Belt); however, the VIN was not included. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 70,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11607566August 9, 2024
STRUCTURE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11607584August 9, 2024
POWER TRAIN, ENGINE, VEHICLE SPEED CONTROL
Driving on [XXX] to Atlanta GA my car would not automatically shift and began to vibrate badly. I was almost hit by other vehicles as I pulled off the highway to check car out. Car was vibrating badly in idle and when I resumed my trip back home the car would not accelerate properly and caused tremendous stress and danger. Figured out that car would not shift automatically and I was forced to shift the car manually. Car would sputter and vibrate badly and would only slightly less vibrate to where I could drive it home in gear D5 and would less vibrate at 75+ mph very dangerous, and would lose power and shake violently going up highway hills. I prayed all the way home and barely made it shaken. I called my Mercedes Benz Dealer from the highway and immediately scheduled appointment on 8/15/24. This was a major safety hazard and life threatening situation with my Mercedes Benz C250 2014 car. My car 100% serviced over the years at dealership I bought it from Rick Hendricks Mercedes Benz of Lake Norman NC. Thank you for your time! Actor & Model [XXX] [XXX] [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
#11607593August 9, 2024
STRUCTURE:BODY
The seal around the sunroof on the driver front side is compromised causing air to flow aggressively through it when going above 40+ MPH. Its affecting the car's overall performance and safety, especially on highways, and the wind makes in very noisy in the vehicle. I have an appointment with MBUSA dealership on Monday, August 12th to have it further inspected. I do see that there was a similar recall for my class of car filed in December 2023 that appears to be related 23V85400.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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