Mercedes-Benz C-Class Complaints (2016)

323 consumer complaints on file.

#11572383February 16, 2024
ENGINE, ELECTRICAL SYSTEM, UNKNOWN OR OTHER
Crankcase Ventilation Valve Emission Modification -Error P052E71 -Error P06DA00
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11572113February 15, 2024
STRUCTURE:BODY
I took my car for service "B" at the dealership. They told me the rear subframe is rusting and there is a hole forming already. Apparently, this is a known problem that Mercedes Benz provided warranty extension up to 20 years with unlimited mileage. However, they stopped at 2015 models. Mine was bought from the same dealership in October 2015, but it is a 2016 model, but actually has the exact same problem earlier models have and they cover with their voluntary extended warranty. I am told to replace it, it will cost at least $4600. They are refusing to cover it under warranty because I my car is at around 60,000. The car did not even reach 100K and well maintained, but has rusted frame already that can be a serious safety hazard according to Mercedes Benz associate.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11571785February 13, 2024
ENGINE
Error code PO52e crankcase ventilation
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11571422February 12, 2024
VISIBILITY:SUN/MOON ROOF ASSEMBLY
The contact owns a 2016 Mercedes-Benz C300. The contact stated that the adhesive bonding on the front panel of the sunroof had failed, and the panel detached from the vehicle and the sunroof could no longer be opened. The cause of the failure was not yet determined, and the vehicle was not repaired. The manufacturer was contacted and informed the contact that the VIN was not included in NHTSA Campaign Number: 21V197000 (Structure). The contact stated that the vehicle had experienced the failure listed in the recall. The local dealer was not contacted. The failure mileage was 52,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11570780February 8, 2024
VEHICLE SPEED CONTROL, SEATS, EXTERIOR LIGHTING
When starting car you can smell gasoline the smell stays while driving
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11567582January 24, 2024
POWER TRAIN, FUEL/PROPULSION SYSTEM
Power Train System - P052E Positive Crankcase Ventilation Regulator Valve Indicates a fault in the Positive Crankcase Ventilation Regulator Valve. I repaired my car for the same issue in 2019 January and it failed again in 2024 January. It costs $2000 to repair and it has a warranty of two. It failed after 3 years. Same issue is occurring in Mercedes C300 and GLC 300 and multiple times. But company isnt taking any responsibility to fix the issue or at least extend the warranty. 1. Incident 1 - Jan 2019, Miles 28k 2. Incident 2 - Jan 2024, Miles 61k
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11566312January 18, 2024
STRUCTURE:BODY, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, LANE DEPARTURE: BLIND SPOT DETECTION
The panoramic sunroof gets stuck on passenger side, and came off the rail on the passenger side as i was driving on the freeway
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11563384January 3, 2024
ENGINE
My coils are faulty and needing to be replaced, but not part of the existing recall for C63s coils. On the message forums for C63s I’ve come across a lot of owners that are having issues not being part of the recall. Campaign No. 2017060008.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11560793December 18, 2023
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
While driving past, close proximity or even going 30-40mph on a local road or even 60-70 on a highway the break assist function will repeatedly beep, and most times it will stop my car for me. This occurs also, when there are no cars near me! It’s very sudden, and unpredictable. on more occasions than few, if i’m driving in the middle of a 3- lane road, and cars are stopping in the far right lane, or making a turn my break assist will malfunction and automatically break. Multiple occasions I feared that a car may rear-end me. It happens alot. Very scary. This has been occurring for more than 2 years.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11559164December 8, 2023
FUEL/PROPULSION SYSTEM
Mercedes Benz Selma, Texas Dearlership refuses to service known issue with fuel system leaks on C300 because they cannot reproduce problem. Problem is that don't have the correct environment to test for this know problem. “There is a short rubber fuel line/hose in the engine compartment that is attached with compression clamps; the hose connects the fuel line from the gas tank to the high pressure fuel pump. When it gets cold outside (below ~40 degrees Fahrenheit) the clamps loosen a bit and the hose will leak gas. This is what you will smell in the cabin. Once it gets warmer outside or the engine bay warms up, the smell will tend to go away. No clue how they've gone all this time without a safety recall, but I did make a report to the NHTSB last month when it started happening to me.” The fix is to have the rubber line w/clamps replaced. If you still have warranty the dealer can take care of it. (Provided they are configured to test for this defect properly which they are not. Bottom line, fuel leaks in garages like mine with a gas water heater are a BIG issue. I alerted the dealership that they and MB would be liable if something were to happen since they refused to repair vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11558041December 2, 2023
ENGINE
Pcv valve broke and it emits all sorts of poisonous gases to the cabin!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11554932November 13, 2023
UNKNOWN OR OTHER
Ac/heater smells like mold/musty/mildew inside the cabin. Took for the extended warranty but will not honor unless you have proof of cabin filters purchased every year. This is their way of finding a loop of not fixing the issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11553099November 1, 2023
ENGINE
Mercedes C300 4Matic Engine light off. The diagnostic tool showed P052E error, which seems like a common problem with MB C300 models built from 2015. Is there a manufacturer recall for this issue? This warning came a few weeks ago and disappeared by itself shortly. It came again.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11552473October 29, 2023
UNKNOWN OR OTHER
My panoramic sunroof has an extreme amount wind coming through it while driving 40 miles per hour . I can also hear my panoramic sunroof sliding back and forth . I’m terrified that that it will fly off while driving and cause a road hazard .
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11552001October 26, 2023
UNKNOWN OR OTHER
Engine light with code P052E
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11549007October 9, 2023
UNKNOWN OR OTHER
In the past few months while driving this car in the Washington DC metro area at normal road speed, the car has suddenly and unexpectedly lost driver power. Each time, I have pushed down on the gas pedal, and after some hesitation the car has moved forward, and then continued to operate normally. This has happened three times in the past 3-4 months.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11548470October 5, 2023
ENGINE
Engine code P052E has come on at 60k miles. After researching the problems this is a very common problem with the 2016 c300 that mercedes refuses to address. To add insult to injury the part needed to be replaced is a sensor worth 100 dollars but mercedes charges over $2500 because you need specialty tools to get to it. This is a very common problem with owners around 40-80k miles and has no cause other than faulty parts on Mercedes end.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11547621October 1, 2023
ENGINE
My mercedes c300 Check engine light came on for P052e positive crankcase ventilation and after doing research, this sounds like a common problem for this car / model
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546988September 27, 2023
UNKNOWN OR OTHER
Had to have crankcase ventilation system replacement at 74k miles. $2,032.98 to replace. Did get a check engine light.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546064September 22, 2023
ENGINE, ELECTRICAL SYSTEM
Had an oil change at a Mercedes dealership after driving for a couple hours. Check engine was on for a code P052E, being crankcase ventilation system. Had the car diagnosed, cost to repair 1,600 dollars. Went through with repair, the code pop up again (P052E). Having to bring vehicle constantly to Mercedes dealerships.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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