There are 7 owner-reported fuel system complaints for the 2008 Mercedes-Benz CLK-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
PURCHASED FROM PRIVATE INDIVIDUAL WITH MILEAGE 43,000. FILLED UP THE GAS TANK ON TWO OCCASIONS. AFTER EACH OCCASION, PLACED CAR IN GARAGE AFTERWARD AND CLOSED GARAGE DOOR. THE SMELL OF RAW GAS WAS OVERWHELMING AS SOON AS GARAGE DOOR WAS SHUT. DUE TO THE OVERWHELMING SMELL AND SAFETY CONCERN, CAR WAS PARKED IN DRIVEWAY. NO LEAKS ON GARAGE FLOOR WERE FOUND. CAR PARKED IN GARAGE THE NEXT DAY WITHOUT THE SMELL OF RAW GAS.
ROUTINE MAINTENANCE IDENTIFIED GASOLINE LEAKING FROM FUEL TANK'S "FUEL SENDER". SMALL CRACK IN PLASTIC FUEL SENDER AT POINT WHERE FUEL HOSE ATTACHED TO SENDER ALLOWED GASOLINE TO ACCUMULATE OVER TIME IN AREA SURROUNDING SENDER AND THEN TRAVEL TO UNDERSIDE OF CAR IN AN AREA IMMEDIATELY ADJACENT TO EXHAUST SYSTEM. AT TIME LEAK WAS DISCOVERED APPROX 1/4 CUP OF FUEL HAD ACCUMULATED. HAD PROBLEM NOT BEEN DISCOVERED A CAR FIRE WAS INEVITABLE
I PURCHASED THE VEHICLE USED FROM A PRIVATE PARTY ON 10/21/17 WITH 76,860 MILES. I FILLED THE TANK WITH GAS, PARKED IT MY GARAGE, DOOR CLOSED. NEXT MORNING THERE A VERY STRONG ODOR OF RAW GAS. A MERCEDES DEALER CONFIRMED THROUGH DIAGNOSTICS AND A SMOKE TEST THAT BOTH SENDING UNITS AND SEALS WERE DEFECTIVE, AND NEEDED TO BE REPLACED.
TAKATA RECALL - THE CAR IS STATIONARY IN MY GARAGE AND IS EMITTNG A STRONG ORDER OF GAS FUMES AND I AM AFRAID THESE GAS FUMES COULD CAUSE AN EXPLOSION OR FIRE
AFTER FUELING UP THERE IS A STRONG FUEL ODOR UNTIL THE TANK IS ABOUT 3/4 FULL. THE CAR HAS ONLY 54K MILES.
TL* THE CONTACT OWNS A 2008 MERCEDES-BENZ CLK350. AFTER REFUELING AND PARKING THE VEHICLE, A STRONG FUEL ODOR EMITTED INSIDE THE GARAGE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE PASSENGER AND DRIVER SIDE LEVEL SENSOR COVERS WERE LEAKING FUEL. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS UNKNOWN.
TL* THE CONTACT OWNS A 2008 MERCEDES BENZ CLK350. AFTER REFUELING AND PARKING THE VEHICLE, A STRONG FUEL ODOR EMITTED INSIDE THE GARAGE. THE VEHICLE WAS TAKEN TO THE DEALER, WHO DIAGNOSED THAT THE DRIVER SIDE FUEL SENDING UNIT WAS FAULTY. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 77,000.
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