There are 9 stored owner reports matching the fuel system leading-label group for the 2004 Mercedes-Benz CLK-Class in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 9 of 9 matching reports.
Open the full vehicle complaint log (all categories)STRONG GAS SMELL FROM REAR SEAT WHENEVER GAS FILLED UP.
MY CAR AFTER FUELING LEAKS A VERY STRONG FUEL SMELL ENTERS MY CAR. THE STRONG FUEL VAPOR WILL REMAIN UNTIL THE TANK GETS BELOW 3/4. IT WILL BE THERE WHETHER IT IS IN MOTION, STATIONARY, OR AT IDLE. MY ENTIRE GARAGE WILL SMELL OF FUEL DURING THIS TIME WHEN THE TANK IS FULL. I KNOW MERCEDES RECALLED THE E CLASS FUEL TANK BECAUSE OF THIS SAME ISSUE. MY CLK500 IS THE SAME AS THE E CLASS BUT THE CONVERTIBLE VERSION. THESE ARE DANGEROUS FAULTY TANKS THAT NEED TO BE RECALLED IN EVERY VEHICLE THEY INSTALLED THEM IN.
ON O AROUND SEPTEMBER 14, 2016 I FUELED THIS AUTO I RECENTLY PURCHASED AS A SECOND CAR. MY GARAGE BEGAN TO WREAK HEAVILY OF GASOLINE. MY HOME IS TOTALLY ELECTRIC AND I HAVE NO GAS POWERED ITEMS IN THERE. MY OTHER VEHICLE NEVER SMELLS AND I HAVE HAD IT 2 YEARS. I REMOVED THE MB AND THE SMELL NO LONGER EXISTED, ELIMINATING ANY OTHER SOURCE. I RESEARCHED THIS COMPLAINT ON THE INTERNET AND WAS SHOCKED AT THE NUMBER OF COMPLAINTS IGNORED AND THE OBVIOUS IMPENDING DANGERS. THIS CAR HAD ONLY 68000 MILES AND SEEMS TO HAVE BEEN SERVICED FREQUENTLY PER CAR FAX. PER INTERNET COMPLAINTS THIS TRAVESTY WAS NEVER RECOGNIZED B MBUSA AND OWNERS WERE LEFT HOLDING THE LEMON AND DEALERS GOT AWAY AS WELL. I AM CONCERNED BECAUSE I DO NOT KNOW WHAT ELSE IS CONNECTED TO THIS FUEL DILEMMA! I KNOW THE DANGERS AND I DO NOT WANT IT TO ERUPT IN FIRE AND DESTROY ME, MY HOUSE NOR MY NEW PORSCHE! THIS SEEMS COSTLY AND AN ACCIDENT AWAITING TO HAPPEN. I CANNOT UNDERSTAND WHY OTHERS WITH DOCUMENTED PROBLEMS ON THE INTERNET HAVE NOT REGISTERED A COMPLAINT WITH YOU. I AM APPALLED AND CHAGRINED AT MBUSA FOR ALLOWING THIS PROBLEM TO EXIST. I WILL BE CONTACTING EVERY ONE I AM ABLE TO REGARDING THE SERIOUS AND EMINENT DANGER OF THIS FUEL LINE MALADY.
AFTER FILLING FUEL TANK STRONG SMELL OF GASOLINE. OTHER COMPLAINTS OF THIS NATURE IN YOUR SYSTEM. RECALL ALREADY ISSUED FOR OTHER MODEL MERCEDES BENZ WITH SAME ISSUE.
TL* THE CONTACT OWNS A 2004 MERCEDES BENZ CLK500. THE CONTACT STATED THAT WHENEVER HE WOULD REFUEL, THERE WAS A STRONG OVERWHELMING FUEL ODOR COMING FROM INSIDE AND OUTSIDE OF THE VEHICLE. THE VEHICLE WAS TAKEN TO AN DEALER WHERE TIT WAS DIAGNOSED THAT THE FUEL TANK NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 82,000.
BOUGHT CAR IN SEPT. 2012. STARTED TO NOTICE FUEL SMELL AFTER FILL UPS. GETTING WORSE, AND CHECKED FUEL SENDING UNIT ON TOP OF TANK. PUDDLE OF FUEL ON TOP OF SENDING UNIT. *TR
STRONG SMELL OF GAS FUMES AT REAR WHEEL WELL AREA WHEN FUEL TANK IS FILLED. DEALER FOUND FUEL LEAKING FROM THE TOP OF THE FUEL SENDING UNIT AND WAS FILLING THE RECESSED AREA ON TOP OF FUEL TANK WITH GAS. THE DEALER SAID THAT THE PLASTIC SENDING UNIT HAS A SMALL CRACK OR PIN HOLE AND WOULD HAVE TO BE REPLACED. I FOUND ON THE MERCEDES BENZ USER BLOG THAT OTHER CLK OWNERS HAD SIMILAR ISSUES. I CONTACTED MERCEDES BENZ USA AND FILED A COMPLAINT STATING THIS IS A FIRE HAZARD. THEY SAID THAT THEY COULD NOT ASSIST ME WITH THIS PROBLEM SINCE THE VEHICLE OUT OF WARRANTY. I FEEL THIS IS A SAFETY ISSUE AND SHOULD BE TAKEN CARE OF BY MERCEDES BENZ. *TR
I SMELLED GASOLINE WHEN MY TWO CARS WERE PARKED IN THE GARAGE. THIS OCCURRED ONLY AFTER FILLING THE GAS TANKS (NO TOPPING OFF.) I THOUGHT IT WAS MY 2010 MBZ BUT THE DEALER CHECKED AND FOUND NO PROBLEM. I HAD MY 2004 MBZ CHECKED. THE DEALER TOLD ME I NEEDED A NEW GAS TANK, BECAUSE IT WAS LEAKING. MY CAR HAS 80K MILES AND LOOKS NEW; GARAGED, SERVICED AND NEVER IN AN ACCIDENT AND HAS NO LEAKS. A NEW GAS CAP DID NOT SOLVE THE PROBLEM. OVER THREE QUARTERS OF A TANK DOES NOT EMIT ANY ODOR, SO I DON'T FILL THE TANK COMPLETELY. I FEEL THE FUMES COULD BE A SAFETY HAZARD INSIDE A GARAGE CONTAINING A HOT WATER HEATER. *TR
TL*THE CONTACT OWNS A 2004 MERCEDES BENZ CLK500. THE VEHICLE WAS PARKED IN A GARAGE WHEN THE CONTACT SMELLED FUEL AND NOTICED THAT THE FUEL PUMP WAS LEAKING FUEL. THE FUEL PUMP WAS LEAKING UNDERNEATH THE REAR SEAT WHICH WAS WHERE ITS LOCATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO REPLACED THE FUEL PUMP ON BOTH THE LEFT AND RIGHT SIDE. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 70,000.
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.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Aug 31, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.