Mercedes-Benz C-Class Complaints (2015)

452 consumer complaints on file.

#11512371March 17, 2023
ENGINE
Engine light came on there is a problem with pcv valve. This requires extensive repair
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11511283March 10, 2023
FUEL/PROPULSION SYSTEM
When start the engine, or idling, it smell gasoline in the cabin so bad.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11509898March 2, 2023
ENGINE
The contact owns a 2015 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed, the vehicle hesitated and stalled. The check engine warning light was illuminated. The vehicle was towed to Safety Auto Repair where it was diagnosed that the engine failed and needed to be replaced. The vehicle was not repaired. Neither the dealer nor the manufacturer was notified of the failure. The failure mileage was approximately 90,449.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11509590February 28, 2023
ENGINE
Driving the 2015 c300 with approx. 69k in miles down the highway and heard a pop and the check engine light came on. The next day there was a rough idle and clanging at low speeds. took to dealership and they quoted me $15k in repairs for a new engine. MB tech said the cylinder #1 is out of spec., and there is scoring on cylinder wall caused by the piston being off center and riding the cylinder wall. After doing research this is a common problem with the m274 engine. How has this not been recalled and taken care of by Mercedes?? At this point i am 'forced' to either come up with $15k for the repairs, or go to MB dealership and try to get into a new car...which i am over $12k upside down on i might add
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11509160February 26, 2023
FUEL/PROPULSION SYSTEM, ENGINE
Check engine light came on and strong fuel smell. Crankcase ventilation malfunction code was verified by dealer.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11509173February 26, 2023
FUEL/PROPULSION SYSTEM
The car smell like gasoline inside, the gas hose connecting the high pressure gas line to the gas tank is licking due a bad connectors
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11507757February 17, 2023
ENGINE, FUEL/PROPULSION SYSTEM, ELECTRICAL SYSTEM
When driving I accelerated and then the engine light turned on. after that the car was jolty and turned off completely when stopped. had to force a restart at the light. code that came back was p052E. This is a major and common issue with these cars. part is 400+ dollars. labor is much more since this is a 6 hour job. the work to replace this part is incredibly intensive that makes it impossible for regular car owners to change. Mercedes refuses to recognizes this as a common issue. but the truth is they designed a faulty system that they claim to have updated a handful of times now.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11507493February 15, 2023
ENGINE
My check engine light was on when I was driving on the highway. I was terrified that something was very wrong. Right after, I took the car to the dealer and was told that the valve for the crankcase ventilation. The actuator was blocked. I was also told that this is not caused by something I did. It's the design of the car that caused the problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11507500February 15, 2023
ENGINE
P052e71 positive crankcase ventilation regularly valve issue. This is a common issue Mercedes is aware of with their vehicles. I was quoted 1600+ for a repair for something has been known about for over 7 years to be an issue with the car class. I was also told by the shop that this a very common issue and odds are I would need the same service within a year or two.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11503021January 22, 2023
FUEL/PROPULSION SYSTEM
Strong Gas Smell when heater comes on. Could be hazardous due to breathing in Fuel Fumes
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11502701January 19, 2023
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
Hi i have seen lot of customers have filed this cause happening in all 2015 to.2018 c300 its crank case vent valve needs to be changed every 30 to 60k miles lt of posts i have seen i just want mercedes to recall this problem.as its $2400 to fix this because something they didnt did right and part goes bad . Pls help.us reach this so they can do recalls why we have to pay 2400
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11502437January 18, 2023
ENGINE
Oil separator failure. This a common design fault as documented by multiple complaints on the internet. This is another Mercedes Benz emission design flaw causing emission failures. This is very cheap part but extremely expensive to replace. Mercedes collects over $1200 per labor repair for each. THIS IS AN EMISSIONS POLLUTION AND SAFETY ISSUE THAT CAN BE SOLVED. PLEASE FORCE A RECALL. Engine severely smokes/stalls leaving people stranded on highways. When stuck, coolant is sucked into the engine mixing with the oil. No warning. The car
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11501944January 16, 2023
ENGINE
I have 2015 C300 Model, total milage on the car is 30K. Dashboard is showing the check engine light and when I take to Dealership for diagnostic, the code is P052E which is a problem with Crankcase vent. Dealership tech had mentioned that this seems to be known issue effecting years 2015-2018. When I did search, he is right; many MB owners are facing same issue which is a malfunction during assembly/manufacturing. MB should be responsible for part replacement and labor. Please investigate and ask MB to run recall campaign. Thank You.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11501868January 15, 2023
STRUCTURE:BODY
Front Roof Panel Discoloring and Detachement
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11501468January 12, 2023
ENGINE
Vehicle experienced loss of power and rough running when check engine light came on. Mercedes dealer reported one of the pistons cracked resulting in catastrophic engine failure with just shy of 61,880 miles on it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11500515January 6, 2023
ENGINE
These cars have a known wrist pin failure, mercedes refuses to cover the cost of repairs as its not a recall. My vehicle is the specific model and year this is known for, and my car is making these piston slapping sounds, worse everyday. Worse on deceleration, goes away when warmed up, just like the reports. I am afraid I'll lose power while driving and hurt myself or others.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11500356January 5, 2023
ENGINE, FUEL/PROPULSION SYSTEM
I have an emissions related Check Engine Light (P052E71) relating to the Evaporative/Crankcase ventilation system. I think this should be a Recalled/Warrantee item on the 10 year/100,000 miles federally mandated guarantee. Please advise...
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11500361January 5, 2023
ENGINE
It cuts out randomly while pressing the gas pedel to get out of the way of traffic and cuts out and stalls ive had it looked at and they say theres no check engine codes and that they cant make it do it. Theres many of people with the same issue online and the dealers wont help them either
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11499880January 3, 2023
ENGINE
Common problem mercedes hasn’t addressed from the factory crankcase breather element at less than 50,000 miles and the smell pf gas that comes in to the cabin is horrible
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11499161December 28, 2022
STRUCTURE:BODY
Glass panoramic sun roof lifted off the vehicle at highway speed, I had to grab the front edge of roof,pull off the expressway. Tried to re seat it in the channels but could not close the roof. Drove 120 miles with roof open holding the front edge down, which continued to try to lift off the vehicle. . My vehicle is Mercedes’ 2015 c300. These vehicles have a recall for this very reason but my vin number is not listed. Don’t know why? Need to get my vin listed for this recall. Please help!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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