There are 2 owner-reported fuel system complaints for the 2008 Mercedes-Benz C-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2008 MERCEDES-BENZ C350. THE CONTACT STATED THAT THE VEHICLE EMITTED AN ABNORMAL FUEL ODOR. MONTHS AFTER THE ODOR WAS NOTICED, THE VEHICLE BECAME INOPERABLE. THE FAILURE OCCURRED WITHOUT WARNING. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT FUEL ENTERED INTO THE CARBON FILTER AND THE ENTIRE FUEL TANK NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE DEALER AND MANUFACTURER WERE NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 130,000. THE VIN WAS NOT PROVIDED.
2008 C63 AMG-EVERY TIME FILL UP TANK THERE VERY STRONG GAS SMELL EVEN OUT DOOR. I TRACKED DOWN SMELL FROM UNDER BACK SEAT WHERE GAS TANK IS. OPEN BACK SEAT YOU WILL SEE WET SPOT FROM GAS LEAK. THIS IS EXTREMELY DANGEROUS THAT CAR CAN GET CAUGHT ON FIRE. I RESEARCH ONLINE AND FOUND MANY MERCEDES HAS SAME ISSUE AND BEEN TOLD BY DEALER THAT IT TEAR AND WEAR, AND USER RESPONSIBLE FOR REPAIR. MY CAR IS 2008 C63 AMG, ONE OF TOP C CLASS MODEL, WITH 50,000 MILES. THE GAS TANK SHOULD LAST MUCH LONGER THAN 50,000 MILE. THIS IS UNACCEPTABLE FOR MERCEDES OR EVEN ANY BRAND. *TR
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 26, 2026