2018 MERCEDES-BENZ C 300 4MATIC Complaints

Sunroof causing dangerous pinch conditions. Roof tracks break and cause pinch areas with partial opening of roof

I have begun noticing symptoms of the adhesive failing, such as excessive wind noise coming from the front roof area and visible gaps/separation between the panel and the vehicle body. This poses a severe safety risk, as the panel could completely detach while driving and become a high-speed road hazard. No warning lights have appeared. The vehicle and component are available for inspection upon request.

2018 Mercedes C300 - a hole rusted through the rear subframe causing structural safety concerns. This car has been routinely washed weekly and the frame should not have rusted through within only 8 years. This also led to a large repair bill.

****Please force Merces to recall all VIN's!******* NHTSA ID Number: 23V854000 1) Front glass roof panel came off while driving the car on the freeway. I didn't see or hear anything. When I got out of the car, I saw the entire piece has come off. This has caused my sunroof to malfunction, and it won't close now. I garage my car and barely drive it. I bought it used in Dec. 2021. There was about 46,000 on it in Dec 2021 and now (June 2026) the mileage is 51,000. Yes, the car is available for inspection. 2) I was on the freeway, didn't see it come off. No cars immediately in front or behind me. 3) There have been many complaints that this has happened, but Mercedes won't fix it and just say our VIN's are not part of the recall. Mercedes has not taken responsibility that this has affected more cars than they are admitting to. Mercedes says my VIN is not on their list too. 2018 Mercedes C 300 4Matic Sedan- 4) I will take to a Mercedes Dealership to get an estimate soon. 5) No warning lights or sounds.

Mercedes-benz usa. llc (mbusa) is recalling certain 2014-2020 c-class, cla, gla, s-class. glc, and gle vehicles. please refer to mbusa's recall report for specific vehicle details. the front roof panel located between the windshield and the panoramic sunroof may not have been bonded correctly to the vehicle during a prior repair, allowing the front panel to detach from the vehicle., Consequence A detached roof panel can become a roao hazard, increasing the risk of a crash I went to the dealership about this complaint 2 years ago not even knowing about an official recall of this exact problem. I don't drive my car as much because it was an issue that never got fixed. I was never told about a recall. They said there is a whistling and it could fly off (the panel)

When I decelerate my brake lights don’t flash to warn the driver behind me that I am potentially slowing down .

The contact owns a 2018 Mercedes-Benz C300 4Matic. The contact stated that the front passenger's and driver's side seat belts had failed to retract and return to the stowed position. The contact related the failure to NHTSA Campaign Number: 21V032000 (Seat Belts); however, the VIN was not included. The dealer was notified of the failure and informed the contact that there would be a cost for a diagnostic test. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 59,000.

car has less than 34,000 miles on it. One day went to drive and the vehicle wouldn't turn and an error message popped up "power steering malfunction, check owners manual" Had it towed to dealer and they said they couldn't find anything wrong with it. According to the dealer, no sign of wear and tear, no physical damage,

Very common problem on all Mercedes - code P052E - second time on this car. Engine light, 2nd time on this car. Car is 2018 and has 45k miles. First time it was at 28037 miles. This is a MAJOR issue costing consumers $1500-$2500 to repair and needs a recall from manufacturer

2018 Mercedes C300. P052E check engine code. Positive Crankcase Ventilation failed with less than 28K miles. Common reported problem but not covered after warranty period, even with extended warranty addition. It's a major part of the engine function and 6 hours of labor to replace. Mercedes Benz should cover this type of fault on the design.