Mercedes-Benz C-Class Complaints (2018)

118 consumer complaints on file.

#11558978December 7, 2023
UNKNOWN OR OTHER
Panoramic roof suddenly shattered while driving on a clear day.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11551799October 25, 2023
STRUCTURE
The contact owns a 2018 Mercedes-Benz C300. The contact stated while attempting to close the sunroof, the sunroof failed to close properly. 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, and a case was opened. The failure mileage was 45,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11551029October 20, 2023
ENGINE
My car was diagnosed with positive crankcase ventilation regulator valve performance failure. This should be recalled by the manufacturer because many c300 are having this very same issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11550481October 17, 2023
ENGINE
Check engine light appeared.I took it to Mercedes and they said the crankshaft was faulty. I had to repair it and it cost me about $1800.00.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11548498October 5, 2023
ENGINE
Engine code: P052e - the widest spread engine issue on Mercedes which fails emissions testing. Crankcase ventilator issue which leads to stalling.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546676September 26, 2023
ENGINE
Positive crank case valve failure. Check engine light on. Mechanic started this was extremely common and a costly repair on lower mileage Mercedes Benz vehicles. Mercedes Benz forums also mention this is extremely common and frustrating. This happened at slightly over 50k miles on my vehicle. Error code P052e
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11544819September 15, 2023
ENGINE
Engine light came on, checked with diagnostic machine shows a crank shaft issue. I have maintained the car with regular checks and maintenance. This has to be a defective part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11543013September 6, 2023
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
According to the dealership, if the car is not started every 3 days, it will shut itself down. The car was towed 6 times, I'm a business woman, my coworkers, friends drives Mercedes Benz, and no one have heard of any such issues. Any cheaper cars, after 2 weeks at the airport, the car starts. Something is wrong with the car, something is draining the car battery if not started every 3/ 4 days. They are taking advantage to the fact, that I'm a female and older. They need to replace the car, fix, or junk their car. Someone needs to take responsibility for the repair of the car.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542789September 5, 2023
UNKNOWN OR OTHER
The check engine light came on with the error code P052E - PCV valve failure while the car is only driven for less than 38K miles. I am worried about the quality of the car/engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11540537August 24, 2023
ELECTRICAL SYSTEM
Hello My c300 2018 only have 79k and suddenly the engine light on, when I check it show that I need Positive Crankcase ventilation valve replace. it cost $2300. As I know a lot of people who own Merced have the same problem so should have a recall for that Thanks
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
#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
#11534679July 26, 2023
ENGINE, FUEL/PROPULSION SYSTEM
Check engine light came on. Had a diagnostic check and was told that the crankcase ventilation sensor needs to be replaced which will cost $1200.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533877July 23, 2023
FUEL/PROPULSION SYSTEM, ENGINE, UNKNOWN OR OTHER
My c300 2018 only has 50k and suddenly the engine light is on, when I check it shows that I need the Positive Crankcase ventilation valve replaced. it cost $2300. As I know a lot of people who own Mercedes have the same problem. Three mechanics claim it on almost all C, CLA, and GLA models. Please make Mercedes recall it finally.
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
#11523881May 25, 2023
FUEL/PROPULSION SYSTEM
This particular model of vehicle has a well-known and documented failure of the PCV valve (Crankcase). This has not been identified by NHTSA to date. This should be considered for a recall due to the high incident rate of the P052E error code (valve failure) as this causes reduced emission control and possible explosions within the engine due to pressure-related issues. My vehicle did not have any warnings prior to the engine light illuminating. After diagnostics, P052E was identified. Dealership told me that it needed to be replaced as it would fail and result in damage.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11519686April 30, 2023
FUEL/PROPULSION SYSTEM, ENGINE
The code I received is p052e from the check engine light. This can cause the car to stall out mid way through driving and cause a potential fatal accident. This is a common issue across C300 And GLC benz.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11517301April 16, 2023
UNKNOWN OR OTHER
Rear camera doesn’t work
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11515018April 2, 2023
UNKNOWN OR OTHER
The fault code P052E71 is logged in the fault memory of the engine control unit. Cause: Possible cause: The component or the electrical actuation at the partial load crankcase ventilation valve (Y58/2) may be faulty or might not activate initially.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11511208March 10, 2023
ELECTRICAL SYSTEM, COMMUNICATION
The contact owns a 2018 Mercedes-Benz C300. The contact stated that after starting the vehicle, the S.O.S. Not Active message displayed. The contact was concerned that in the event of an emergency, the emergency services function would be inoperable. The vehicle had previously been serviced under NHTSA Campaign Number: 21V058000 (Electrical System, Communication) however, the failure recurred. The dealer was made aware of the failure; however, the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 85,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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