There are 9 owner-reported body & structure complaints for the 2008 Mercedes-Benz C-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
My car has 85,000 miles on it and the Rear Trailing Arm Frame on the drivers side has rusted from the inside out. It is a good thing I have become aware of this, as it was about to break and cause me to lose control of my car. This needs to be recalled before someone gets hurt. In Canada and Germany Mercedes is fixing this for free. Why have Americans not been warned about this potentially deadly safety issue? I am reading many common experiences of cars with less than 50,000 miles on them.
-The rear subframe rusted through and broke. This made the vehicle extremely unsafe to drive. Braking caused the vehicle to veer right and was unsafe to stop. -Both a Mercedes dealership service center and an independent service center confirmed and verified the issue. -The part was inspected by the Mercedes dealership service center and the independent service center. -There were no warning lights or messages. The vehicle started making minor sounds in the rear of the vehicle prior to failure.
The contact owns a 2008 Mercedes-Benz C300. The contact stated that the vehicle was to a State Inspection Station to be State Inspected however while inspecting the vehicle the mechanic found severe corrosion and rust holes in the rear subframe of the vehicle. The contact was informed that the subframe needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 72,000.
TL* THE CONTACT OWNS A 2008 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE DRIVING AT UNDISCLOSED SPEEDS, THE REAR OF THE VEHICLE RATTLED AND VIBRATED ABNORMALLY. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF FORT MITCHELL (2100 DIXIE HWY, FORT MITCHELL, KY 41011) WHO DIAGNOSED THAT THE REAR DRIVER'S SIDE SUB FRAME WAS RUSTED. THE SUBFRAME WAS REPLACED AND THE FAILURE WAS REMEDIED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 250,000.*DT*LN*AS
TL* THE CONTACT OWNS A 2008 MERCEDES-BENZ C300. WHILE THE CONTACT'S WIFE WAS DRIVING 60 MPH, THE VEHICLE SWERVED WITHOUT WARNING AND THE DRIVER NEARLY LOST CONTROL. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE SUBFRAME FAILED DUE TO EXTREME RUST. THE VEHICLE WAS REPAIRED. A DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 99,000. ...UPDATED 11/15/17 *BF CONSUMER STATED REPLACED REAR SUBFRAME UPDATED 7/17/18*JB *TR
UPON COMMENCING MY EXIT FROM THE PARKING LOT ADJACENT TO MY CHURCH, I PRESSED THE ACCELERATOR AND THE VEHICLE BOLTED FORWARD AT FULL SPEED CRASHING THROUGH THE PARKING LOTS FENCE AND INTO A MAJOR AVENUE (WHERE, FORTUNATELY NO TRAFFIC WAS TRANSITING AT THE MOMENT). THE VEHICLE FAILED TO RESPOND TO MY INITIAL ATTEMPTS TO APPLY THE BRAKES AND IT WAS NOT UNTIL THE VEHICLE HAD TRAVERSED THE FOUR LANE AVENUE AND REACHED THE SIDEWALK ON THE OTHER SIDE OF THE AVENUE THAT I WAS ABLE TO BRING THE VEHICLE UNDER CONTROL AND JUDICIOUSLY PARK SAME UNTIL A POLICE ACCIDENT REPORT COULD BE FILED ([XXX]) AND THE VEHICLE TOWED AWAY. VEHICLE IS NOW IN A REPAIR SHOP AND ESTIMATED COSTS ARE APPROXIMATELY $10,000. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
TL* THE CONTACT OWNS A 2008 MERCEDES BENZ C350. THE CONTACT STATED THAT THE FRAME WAS SEVERELY RUSTED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 140,000. *TR
MY 2008 C300 MOONROOF HAS A DEFECT. THE OPERATION CONTROL PANEL WILL NOT AUTO OPEN OR AUTO CLOSE. MY CAR HAS 338 MILES ON IT AND I HAVE HAD IT FOR 8 DAYS. 4 OF THESE 8 DAYS IT HAS BEEN IN THE SHOP. MERECEDES ENGINEERING IS AWARE OF THE PROBLEM AND THEIR WILL BE A SOFTWARE UP DATE FOR THE CAR IN JUNE, BUT IT IS APRIL. THERE ARE FIVE REPORTED CASES AND ONE OF THEM IS MINE. THE DEALERSHIP HAS REPLACED THE OCP WITH ONE FROM ANOTHER C300 FROM THEIR LOT NOT EVEN BRAND NEW PARTS!!!! BUYER BEWARE. THIS IS A TEMPORARY FIX THEY SAID AND ALL C300 WILL NEED THIS SOFTWARE UPDATE. I AM SURPRISED THERE ISN'T A SERVICE BULLETIN YET! *TR
LTR FAD FM (IN) FM OWNER OF A 2008 MERCEDES BENZ C300 RE DEFECTIVE REAR DOOR LOCKING KNOB, THE PLASTIC LOCKING KNOB CAME OFF WHILE UNLOCKING THE DOOR MANUALLY BUT THE DOOR DID NOT UNLOCK, REPLY ATTN. DARLEE MCCOLLUM, DC OFC (ENVELOPE ONLY)
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026