Mercedes-Benz C-Class Complaints

3,817 consumer complaints on file.

#11539587August 19, 2023
ENGINE
Piston crack in Cylinder 1
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11539132August 17, 2023
VISIBILITY:SUN/MOON ROOF ASSEMBLY
The contact owns a 2017 Mercedes-Benz. The contact stated that while driving at an undisclosed speed, she attempted to open the sunroof, but when she looked, she noticed that only the left side was open. The contact stated that the failure reoccurred on two occasions. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11538997August 16, 2023
ENGINE, ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)
The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 25 MPH, the check engine warning light illuminated. The contact veered to the side of the road. The vehicle was towed to an independent mechanic, where the diagnostic test retrieved code: P052E, and it was determined that the positive crankcase ventilation (PCV) valve had failed and needed to be replaced. The vehicle was not repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 125,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11538699August 15, 2023
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM), FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS, SUSPENSION:FRONT:CONTROL ARM
The contact owns a 2014 Mercedes-Benz C250. The contact stated while driving 60-62 MPH, the vehicle lost motive power. The check engine warning light, the traction control warning light, and other unknown warning lights were illuminated. The contact veered to the side of the road. The contact was able to restart the vehicle after several attempts. The contact was able to continue driving. The dealer was notified of the failure and referred the contact to AutoZone. The vehicle was taken to AutoZone, where it was diagnosed that the fuel injectors and the ECM had failed. The contact sent a diagnostic report to the used car dealer where the vehicle was purchased, but no assistance was provided. Additionally, the contact stated that the control arm had fractured. The vehicle was not repaired. The dealer and manufacturer were not notified of the failure. The failure mileage was approximately 123,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11538798August 15, 2023
UNKNOWN OR OTHER
at approximately 48,000 miles driven the check engine light turned on when car was taken to the mechanic, code p052e71 came back as the problem, which means crankcase breather hose had to be replaced. the cost was almost 2000 dollars.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11538175August 13, 2023
UNKNOWN OR OTHER
My check engine light popped on with code p052E for the Positive Crankcase Ventilation Regulator Valve Performance.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11538137August 12, 2023
VISIBILITY/WIPER, STRUCTURE:BODY:ROOF AND PILLARS
Incorrect bonding of the rear window. The rear window bond is failing which is causing the window to detach from the convertible top. The bonding is failing in many different locations, causing not only detachment, but the failure is also causing fine hairline cracks at the points of failure. The dealership refused to correct the defect, informed I would have to pay $3,000.00 to correct the failure of the bonding.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11537819August 11, 2023
FUEL/PROPULSION SYSTEM
A recall was issued for the fuel pump, creating a major safety issue and increased risk of collision, which still no available remedy. The manufacturer has failed to provide a resolution in a timely manner, especially for such a vital competent wearing down every day. Furthermore, the manufacturer has offered not other alternatives such as loaned vehicle or compensation for the risk of sudden motor failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11537572August 10, 2023
POWER TRAIN, UNKNOWN OR OTHER
Check engine light comes up. The crankcase ventilation has to be replaced. This is a well known defect in design by Mercedes Benz and there are hundreds of people who have had to replaced the crank case costing thousands of dollar to only have it happen again due to its faulty design. It’s well documented all over the Internet.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11537702August 10, 2023
LANE DEPARTURE: BLIND SPOT DETECTION
Blind Spot Assis Inoperative. This message appears on dashboard showing the malfunction of the blind spot sensors. This always happen when the weather temp is hot and also while driving during rain. This concern is putting me, my wife and kids in high risk and unsafe driving condition. I did some research and found out that the manufacture of this car put these electronic sensors inside the rear bumper behind both rear wheels and are exposed so whenever driving, rain, dirt, salt and all road debris splash all over these electronic sensor causing them to corrode and destroyed as a result of water and salt getting inside these fragile electronic sensors and then, the whole blind spot system inoperative and of course high risk to get involved into an accident.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11537283August 8, 2023
STRUCTURE
The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving at approximately 65 MPH, she heard a rushing air sound as if the sunroof was opened; however, the sunroof was not open. The contact stated that when she reached her destination, she noticed there was a panel missing from the roof between the sunroof and the windshield. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle had not been diagnosed or repaired. The manufacturer had been informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 21V197000 (Structure). The failure mileage was approximately 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11536845August 7, 2023
ENGINE, VISIBILITY:SUN/MOON ROOF ASSEMBLY
The contact owns a 2014 Mercedes-Benz C250. The contact stated that the vehicle was getting water inside the cabin from a leak coming from the sunroof. The contact stated that while driving at various speeds, the vehicle started jerking and making a choking sound as if the vehicle was going to shut off. The check-engine warning light was illuminated. The vehicle was taken to the dealer who determined that there was an electrical failure related to the leak coming from the sunroof leak and that there were corroded cam blocks. The cable for the sunroof was replaced along with the mats on the floor. The contact was unsure if the engine was repaired. The contact stated that the check engine warning light was intermittently illuminated, and the jerking of the vehicle persisted. The manufacturer was not made aware of the failure. The approximate failure mileage was 54,315.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11536925August 7, 2023
STRUCTURE
The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 60 MPH, there was an abnormal wind sound coming into the vehicle. After a visual inspection, the contact noticed that the glass was detaching from the panoramic sunroof. The vehicle was towed to the dealer, who determined a failure with the adhesive. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 21V197000 (Structure) however, 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 51,150.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11536988August 7, 2023
VISIBILITY:SUN/MOON ROOF ASSEMBLY
The contact owns a 2013 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed during a rainstorm, and rainwater leaked from the sunroof and the front driver’s side window into the cabin of the vehicle. The cause of the failure was not yet determined. The manufacturer and local dealer were not notified of the failure. The failure mileage was 125,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11536699August 5, 2023
ENGINE
The check engine light has been coming on to indicate replacement of vent valve assembly According to the Mercedes Benz dealership. This is a commonly known problem in MB that they should replace and repair instead of charging customers $2k. My car has below 40k miles on it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11536510August 4, 2023
UNKNOWN OR OTHER
2013 C300 subframe rusted and cracking.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11535656August 1, 2023
ENGINE, FUEL/PROPULSION SYSTEM
My Mercedes Benz stopped working. The mechanic shared it involves the: fault valve for crankcase ventilation has malfunction.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11535720August 1, 2023
SUSPENSION
Rear subframe rust through, affecting the function of control arm. When braking mildly caused the forward motion of vehicle to swerve into oncoming traffic. It has been reported and is in their possession. There was a small clicking noise like a possible loose shock absorber, a few times in the past month. Then two days ago, the sound became stronger including a clicking noise like two pieces of sheet metal torn passing each other. Upon personal inspection I found severe rust through on the subframe on the left side in front of the left drivers side rear tire. Corporate has sent a letter extending the warranty for that part. Photos can be provided.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11535168July 29, 2023
FUEL/PROPULSION SYSTEM
It is such a common issue reported by many 2016 c300 owner who experienced error code p052e bad Pve valve. My car only has 40,000 miles. I think the manufacture should be responsible for a recall. [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
#11534939July 27, 2023
FUEL/PROPULSION SYSTEM
While trying to pass big rig on freeway my car went into lymph mode and stalled causing the car behind me to brake and almost caused an accident. My engine light came on & after getting it checked out I retrieve the following code P0002. After doing some research it appears this is an ongoing issue with this year and model of car.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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