2006 Mercedes-Benz C-Class Body & Structure Problems

While driving at approximately 70 mph on a highway, the rear subframe of the vehicle suddenly and catastrophically failed. This caused the vehicle to fishtail violently and nearly led to a serious highway accident. I was able to regain control and pull off the road safely, but the vehicle was no longer drivable and had to be towed. An inspection by a certified technician confirmed that the rear subframe rusted from the inside and experienced a complete structural failure. One of the suspension control arms even broke off of the subframe due to rust. The vehicle showed no warning lights or symptoms prior to the incident. The road was dry and free of potholes or debris, and the car had been properly maintained and garage-kept for the prior 16 years. This issue is a known defect in Mercedes-Benz vehicles of similar design. Mercedes-Benz has extended the subframe warranty for C-Class vehicles from model years 2008–2015 due to widespread internal subframe corrosion. However, this vehicle (2006 model year) is not covered, despite experiencing the same failure. The corrosion originated from inside the subframe, indicating a manufacturing or materials defect rather than environmental exposure. This failure posed a severe risk to my safety and the safety of others, especially since it occurred at highway speeds without warning. The problem has been documented in other vehicles and is the subject of a current class-action lawsuit (Case § 1:23-cv-00636 in the state of Georgia).

We received a recall notice on our Mercedes stating that over time the bonding in the glass panel and sunroof frame might deteriorate over time and cause the glass to separate from the vehicle. On 02/06/25, my son brought his car into the Mercedes dealership in Lafayette, Indiana to take care of the recall. The service tech signed off on the recall and told him everything was ok. On 02/21/25, he was driving down the highway and the entire glass part of the sunroof flew off behind him! Luckily there wasn’t a driver behind him. He was very startled and could’ve swerved off the road causing injury to himself or others. If someone was behind him they could’ve been injured or even killed. We called the dealership immediately. The service manager told my husband that they checked the glass on the roof and our car was not part of the recall and there was nothing they could do! Since that day, (one month) we have been trying to get SOMEONE to help us. We have contacted the GM at the dealership, talked to 3 people at Mercedes corporate only to be hung up on once and put on hold for 45 minutes the other time. To this day we are unable to get anyone to address the issue. The NHTSA clearly stated our vehicle is part of this recall yet the dealership is stating the glass number wasn’t listed. Obviously our vehicle is part of the recall considering what happened!

THE FITING ARE NOT MADE WELL ,AND OIL IS DISTRIBUTE ON EVERY PART OF THE FRONT ENGINE AND TRANSMISSION AREA CAUSING SMOKE AND CAN CAUSE FIRE. IF IT COME APART. *TR

DT*: THE CONTACT STATED WHILE WEARING SUNGLASSES THE INSTRUMENT PANEL WAS NOT READABLE. THE DEALERSHIP DETERMINED THIS WAS HOW THE VEHICLE WAS MANUFACTURED. UPDATED 09/15/06. *JB

FEW MILES DRIVEN AND A SQUEAKING NOISE FROM UNDER THE WINDSHIELD DO NOT ALLOW TO DRIVE WITH NECESSARY SERENITY. AFTER 5 INTERVENTION ON THE CAR FINALLY THEY SOLVED THE PROBLEM, REPLACING 3 TIMES THE PLASTIC COVER UNDER THE WINDSHIELD, ONE TIME COMPLETELY REPLACED THE WINDSHIELD. NOW THAT THE WINTER AND COLD TEMPERATURES ARE BACK THE NOISE IS BACK AGAIN. UNBELIEVABLE FOR A MERCEDES-BENZ. *TR