Mercedes-Benz C300 Window & Wiper Problems

Window & Wiper complaints by model year

Which parts fail

• Sun/moon roof assembly
  35
• Fixed panaramic roof/sky light assembly
  1
• Rearview mirrors/devices › Exterior
  1

Components named in complaints (power windows, windshield, wipers, mirrors, sunroof).

Mileage when the problem started

• Under 25k
  1125%
• 25k–50k
  1330%
• 50k–75k
  1023%
• 75k–100k
  511%
• 100k–150k
  49%
• 150k+
  12%

What owners report

The contact owns a 2020 Mercedes-Benz C300. The contact stated that a section of the roof near the top of the windshield, between the sunroof, had detached and flown off the vehicle while driving 30 MPH in bumper-to-bumper traffic. The driver was able to grab the portion of the rubber gasket and pulled it into the vehicle through the driver's side front window. The roof was in three pieces. The contact turned on the hazard lights and was able to pull over safely to the side of the roadway. There were no warning lights illuminated. The contact was concerned about the failure potentially causing a road hazard under different circumstances. The vehicle was taken to an independent mechanic the next day who declined to service the vehicle and informed the contact it was an issue for the manufacturer. …

The contact owns a 2020 Mercedes-Benz C300. The contact stated while driving 55 MPH, the sunroof exploded without impact and glass fragments fell inside on the rear seats of the vehicle. The vehicle was taken to the dealer and the contact was informed that the sunroof needed to be replaced. The vehicle was not repaired. The contact stated that the failure had occurred twice. The manufacturer was contacted and stated that the vehicle was not under recall. No further assistance was provided. The failure mileage was 34,000.

The contact owns a 2018 Mercedes-Benz C300. The contact stated that the rear windshield had detached from the vehicle. The vehicle was taken to the dealer, where it was diagnosed that the windshield bonding had detached and needed to be responded. The vehicle was not repaired. The manufacturer was made aware of the failure but informed the contact that the VIN was not included in NHTSA Campaign Number: 18V608000 (Visibility). The failure mileage was approximately 70,000.

The contact owns a 2018 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed, the rear window glass which was not properly bonded had become loosened. The vehicle was not diagnosed or repaired. The VIN was not included in NHTSA Campaign Number: 18V608000 (VISIBILITY). The manufacturer was not notified of the failure. The failure mileage was 50,000.

The contact owns a 2017 Mercedes-Benz C300. The contact stated while driving 65 MPH, the sunroof exploded inadvertently. The contact stated that the shade guard was closed when the failure occurred. The contact had not sustained any injuries. The contact continued driving at slow speeds, and there was glass falling on the road while driving. The vehicle was taken to the dealer, who provided a cost for the repair. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and informed the contact that they could not assist because the VIN was not included in a recall. The failure mileage was approximately 75,000.

The contact owns a 2017 Mercedes-Benz C300. The contact stated that while driving at approximately 75 MPH, a loud popping noise was heard and then the sunroof exploded. The contact stated that there were no injuries sustained from the glass shards that had fallen inside the vehicle. No warning lights were illuminated. The vehicle was not yet taken to an independent mechanic or local dealer to be diagnosed repaired. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The approximate failure mileage was 15,000.

The contact owns a 2016 Mercedes-Benz C300. The contact stated the sunroof failed to close and was stuck open. The vehicle was taken to dealer and was diagnosed that the sunroof rail, motor and rods needed to be replaced. The vehicle was not repaired. The contact stated while driving at 15-20 MPH, she noticed that the sunroof was lifting up. The contact decreased her speed to 10-15 MPH and moved to the shoulder of the road. The contact stated that sunroof flew off and landed on the ground. The dealer was notified of the failure and informed the contact that the vehicle would be repaired at her own expense. The manufacturer was notified of the failure and informed the contact that they could not assist as the vehicle was out of warranty. The vehicle was not repaired. The failure mileage was approximately 82,000. The VIN was not available.

The contact owns a 2016 Mercedes-Benz C300. The contact stated that while driving during rainy weather conditions, water leaked through the sunroof into the interior of the vehicle. In addition, while attempting to close the sunroof, the sunroof glass remained open and slanted on the front and rear diver's sides. Upon further investigation, the contact related the failure to NHTSA Campaign Number: 16V087000 (Visibility); however, the VIN was not included. The vehicle was taken to a local dealer where it was determined that the sunroof rails had failed and needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 100,000.

Related recalls (2)