2012 Mercedes-Benz C-Class Fuel System Problems

Vehicle: 2012 Mercedes-Benz C300 4Matic Sport Problem Component: Fuel / Propulsion System Safety Issue Description: My 2012 Mercedes-Benz C300 developed a serious fuel tank leak at approximately 106,460 miles which created overwhelming gasoline fumes and rendered the vehicle unsafe to operate. The gasoline fumes were extremely strong and entered the passenger area. The fumes were severe enough that I became physically overwhelmed from the gasoline exposure and discarded clothing due to gasoline contamination and odor. A local repair facility identified the leaking fuel tank. I was informed the replacement fuel tank was allegedly on extended backorder through Mercedes-Benz channels. Because the vehicle was unsafe to drive and replacement parts were allegedly unavailable for several months, I was forced to tow the vehicle from [XXX] to [XXX] at my own expense in order to locate a repair facility that could obtain a replacement fuel tank and safely repair the vehicle. The repair invoice states: “Installed used lt fuel tank incl switchover fuel pumps replace section of steel fuel line front of tank from lower braided line.” I am submitting this complaint due to: serious gasoline leak safety concerns, severe gasoline fume exposure, potential fire hazard, and the alleged extended unavailability of replacement fuel tanks. Mercedes-Benz USA Case Number: 22302114 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2012 Mercedes-Benz C300. The contact stated the fuel tank was emitting a fuel odor. The contact stated that the fuel odor was extremely strong and could be smelled inside the residence while the vehicle was parked in the garage. There were no warning lights illuminated. The vehicle was taken to a Certified Mechanic, who diagnosed that the leak was coming from the top of the fuel tank; however, the mechanic was unable to specify the cause. The vehicle was towed to the dealer, but the vehicle was not diagnosed. The vehicle was not repaired. The contact became aware of NHTSA Campaign Number: 12V557000 ( Fuel System, Gasoline) online; however, the VIN was not included. The manufacturer was informed of the failure and informed the contact that the VIN was not under recall. The failure mileage was approximately 98,000.

During hard acceleration the high-pressure fuel pump fails. I've never had to replace this part on any other car that I have owned. When I research the part for this car, I reviewed many forums and articles complaining about the failure of the high-pressure fuel pump on the Mercedes c250 sport or similar chassis. The vehicle performs normally until there is hard acceleration; then the engine light comes on. This causes the car to lose acceleration power and slows the car down significant and can be dangerous especially if driving on a freeway or highway. The failure of the part has been reported to occur as early as 30k miles.

The contact owns a 2012 Mercedes-Benz C350. The contact stated while the vehicle was parked, the contact noticed a strong smell of fuel around the exterior of the vehicle. In addition, the contact stated that while driving the vehicle, the fuel odor was extremely strong, and the contact could not wind the windows down. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was made aware of the failure. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was 53,000.

While trying to pass big rig on freeway my car went into lymph mode and stalled causing the car behind me to brake and almost caused an accident. My engine light came on & after getting it checked out I retrieve the following code P0002. After doing some research it appears this is an ongoing issue with this year and model of car.

The contact owns a 2012 Mercedes-Benz C300. The contact stated while driving at various speeds, extra brake travel time was needed to stop the vehicle. There was no warning light illuminated. The contact had taken the vehicle to an independent mechanic where the vehicle was purchased, and he was informed that the failure was caused by the new brake pads placed on the vehicle. The contact eventually took the vehicle to a dealer and was informed that the fuel tank and brake lines were corroded; and the contact was provided an estimate for the repair. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 96,000.

The contact owns a 2012 Mercedes-Benz C300. The contact stated that while parked, the vehicle failed to start. The vehicle was towed to the dealer where it was diagnosed as having water intrusion. The vehicle was not repaired. The contact referenced the failure to NHTSA Campaign Number: 22V955000 (Fuel System, Gasoline, Fuel System, Diesel). The manufacturer was made aware of the failure. The failure mileage was approximately 109,000.

My Mercedes 2012 C 300 is leaking gas which may lead to fire ( the fuel filter flange when operated in high temperatures

Car is leaking gas very dangers . I contact Mercedes dealer regarding the recall on this type of Mercedes i have and they said only vehicles manufactured from April 18, 2011, through July 12, 2011. Mine was before or after , and they refuse to give me the exactly date for my car manufacturer. Car I use for Uber , and i don’t have any other income . If someone just through away a cigarette in parking lot might cause a big problem in the building and others cars in parking

My car smell like a gas leak. I had went to a car shop to have the car to looked at. The mechanic had told me that the fuel filter flange is leaking gas.

EXTREMELY DANGEROUS FUEL LEAK - FUEL STARTED TO LEAK FROM THE TOP OF THE GAS TANK, INSIDE THE CAR FROM UNDER THE DRIVER SIDE REAR PASSENGER SEAT. VEHICLE WAS TAKEN TO CLOSEST SHOP AVAILABLE WHEN HEAVY FUEL SMELLS WERE NOTICED INSIDE VEHICLE WHILE DRIVING. A LOCAL TIRE SHOP, HAMIL FIRESTONE, LOOKED UNDER THE CAR AND IDENTIFIED THAT FUEL WAS LEAKING DOWN THE FRAME TO THE ROAD. SOMEHOW GASOLINE WAS ACTUALLY LEAKING FROM INSIDE THE CAR. I CONTACTED MERCEDES CORP IMMEDIATELY AND THEY SENT A TOW TRUCK TO COLLECT THE VEHICLE. I WAS TOLD THAT DUE TO THE NATURE OF THE ISSUE IT WAS EXTREMELY DANGEROUS TO DRIVE THE CAR. MERCEDES SAID THAT DESPITE THE CAR BEING OUT OF WARRANTY, SOMETHING LIKE THIS WOULD GO TO "UPPER MGMT" FOR REVIEW AND SHOULD BE TAKEN CARE OF BY MERCCEDES. NOW THE VEHICHLE IS STILL AT THE LOCAL MERCEDES DEALERSHIP WHERE THE HAVE CONFIRMED AN ISSUE WITH THE FUEL PUMP AND SEALS, AND THAT THE CAR IS DEFINETLY LESKING FUEL OUT ONTO THE ROAD.... BUT DESPITE A RECALL ON ALMOST EVERY OTHER 2012 MODEL CAR FOR THE SAME ISSUE, THEY ARE SAYING BECAUSE THIS VIN IS NOT INCLUDED IT DOESN'T MATTER THAT IT IS DOING THE SAME THING. THEY WANT ME TO PAY FOR THE REPAIR. I EXPLAINED THAT I OR MY CHILDREN, OR EVEN ALL OF US COULD HAVE BEEN INVOLVED IN A FATAL CAR FIRE DUE TO THE ISSUE!!! MERCEDES DIRECT RESPONSE WAS, "THAT IS THE RISK OF DRIVING A VEHICLE OUT OF WARRANTY." UNACCEPTABLE!!!

P0002 FUEL VOLUME REGULATOR CONTROL CIRCUIT RANGE/PERFORMANCE MERCEDES C250, IF I'M EXPERIENCING A LACK OF POWER WHEN I PRESS THE GAS PEDAL AND I'M GETTING A P0002 CHECK ENGINE LIGHT, THERE'S A HIGH PROBABILITY THAT I WILL NEED A NEW HPFP HIGH PRESSURE FUEL PUMP.

THERE ARE SMALL CRACKS THAT HAVE DEVELOPED IN THE TOP OF THE FUEL SENDING UNIT. THIS ALLOWS FUEL TO LEAK OUT OF THE TOP OF THE FUEL PUMP AND POOL IN THE CENTER OF THE PUMP WHERE THERE ARE A NUMBER OF ELECTRICAL WIRES THAT ARE SUBMERGED IN FUEL. THIS IS A POTENTIALLY DEADLY PROBLEM AS THERE IS A REAL POTENTIAL FOR IGNITION OF THE LEAKED FUEL WHICH IS RIGHT UNDERNEATH THE DRIVERS SIDE PASSENGER SEAT WHERE MY 5 YEAR OLD'S CHILD SEAT IS LOCATED. THERE IS ALSO AN EXTREMELY STRONG ODOR OF GAS INSIDE THE CAR WHICH IS STRONG ENOUGH TO CAUSE LIGHT HEADEDNESS AND POSSIBLE SYNCOPE. THIS IS AN EXTREMELY DANGEROUS SITUATION. THE NTSB OPENED UP AN INVESTIGATION OF THIS ISSUE THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION OPENED A PROBE IN JANUARY 2012 AFTER RECEIVING 20 REPORTS IN 2003-2006 E55 AMG VEHICLES AND EXPANDED THE PROBE LAST YEAR INTO ALL 2003-2008 E-CLASS VEHICLES. OWNERS SAID THEY REPORTED A STRONG ODOR OF GASOLINE FUEL BOTH INSIDE AND OUTSIDE OF THEIR VEHICLE, PARTICULARLY AFTER REFILLING THE FUEL TANK. MANY COMPLAINTS SAID THE ODOR SUBSIDED AFTER DRIVING SOME DISTANCE THEREBY LOWERING THE FUEL LEVEL IN THE TANK. OTHER OWNERS REPORTED THEY WOULD ONLY FILL THE GAS TANK TO ABOUT THREE-QUARTERS FULL TO AVOID THE ODOR. SOME OWNERS SAID FUEL LEAKED FROM THE FUEL FILTER/SENDER, LOCATED ON THE TOP OF THE FUEL TANK ON THE DRIVER'S SIDE, AND COLLECTED ON TOP OF THE TANK. THIS IS A KNOWN ISSUE BUT THERE ARE OTHER MODELS AND YEAR MODELS THAT ARE AFFECTED AND DID NOT FALL UNDER THE MERCEDES RECALL CAMPAIGN.

POWER LOSS WHEN ACCELERATING. I PULLED OUT IN TRAFFIC AND ACCELERATED BUT...I LOSS POWER AND ALMOST GOT RUN OVER FROM THE ONCOMING TRAFFIC!!! MAJOR SAFETY ISSUE. ENGINE LIGHT COMES ON! THIS IS A HORRIBLE ISSUE FOR ANYONE THAT HAS EXPERIENCED THIS PROBLEM. I'M HOPING THERE HASN'T BEEN ANY FATALITIES DO TO THIS PROBLEM.

WHEN I'M DRIVING THE CAR SEEMS TO LOOSE POWER THEN IT ACCELERATES LIKE IT HIT TURBO POWER AND THE ENGINE LIGHT COMES UP. IT ONLY HAS 57000 MILES. WHEN I DRIVE IT ON ECO IT RUNS FINE AND WHEN I CHANGE TO S START GIVING PROBLEMS. THE CAR FEELS LIKE IT STALLS, ALMOST AS IF IT'S GETTING NO FUEL. MY MECHANIC ADVISE ME TO GET IN TOUCH WITH YOU AND SEE IF YOU CAN ADVISE ME ON WHAT TO DO WITH IT, BECAUSE IT SHOULDN'T BE HAPPENING. THE ACCELERATION ISSUES WITH THIS VEHICLE PRESENT AN IMMINENT THREAT TO SAFETY OF BOTH DRIVER AND OTHER VEHICLES.

AUTO ONLY HAS 56K MILES AND FUEL PUMP WENT OUT, AUTO STALLED IN CITY TRAFFIC 2 TIMES IN MOTION, NO WARNING ON ISSUE UNEXPECTED DUE TO LOW MILEAGE ON AUTO. NO ENGINE CODE TILL 200 MILES AFTER FIRST STALL, ENGINE LIGHT FINALLY CAME ON, THEN SECOND STALL HAPPENED. HAD CODE READ P008A TRIGGERED. TOOK TO PERSONAL MECHANIC FOR TESTING AND REPAIR. HAD THE SYSTEM TESTED FOR THE RELAY, THE FILTER AND IT WAS THE FUEL PUMP. FIRST OCCURRENCE 03/19/2019 SECOND OCCURRENCE 03/23/19.

FEUL TANK LEAK WHEN I PUT ANY AMOUNT OF GAS INTO CAR IT IS LEAKING OUT ON TO THE GROUND WHILE IM DRIVING AND WHEN IM AT A STANDSTILL. THE SMELL IS VERY STRONG AND I SEE THE TRAIL IN MY REARVIEW MIRROR. I READ ON THE WEBSITE THAT IS ONE OF THE PROBLEMS THAT THIS CAR IS HAVING IT WAS REPORTED MARCH 2013 BUT WHEN I CALL THE DEALERSHIP THEY ARE TELLING IT IS NOT A RECALL FOR THIS VEHICLE. I WENT TO AUTOZONE TO DO A CHECK AND IT TOLD IT WAS THE FEUL CAPPED WHICH I SWITCH AND THAT WAS NOT THE PROBLEM. NOW I WENT TO DO MY INSPECTION AND IT FAILED DUE TO THIS PROBLEM.

I FIRST NOTICED THIS PROBLEM ABOUT 2 YEARS AGO. I WAS ON THE HIGHWAY GETTING READY TO PASS A BIG RIG. ABOUT 2 SECONDS AFTER I EXCELERATED I NOTICED THAT I LOST POWER TO THE ENGINE AND THE CHECK ENGINE LIGHT TURNED ON. I KEPT MY FOOT ON THE PEDAL HOPING TO REGAIN POWER TO PASS THE BIG RIG. I HAD NO SUCH LUCK. SHORTLY AFTER I HAD VEHICLES BEHIND ME HAVING TO SLOW DOWN BECAUSE MY CAR WOULDN'T EXCELERATE TO THE DESIRED SPEED. I FINALLY MADE MY WAY OUT OF THE HIGHWAY TO CHECK MY ENGINE. I COULDN'T SEE A PROBLEM BUT THE CHECK ENGINE LIGHT STAYED ON AND THE LOSS OF POWER CONTINUED. I HAD TO DRIVE MY CAR HOME SLOW. THE NEXT DAY I NOTICED THAT THE CHECK ENGINE LIGHT HAD TURNED OFF AND I WAS ABLE TO DRIVE THE CAR NORMAL. THE LOSS OF POWER IN THAT SITUATION WAS SCARY AND COULD HAVE GONE A LOT WORSE. I KNOW I AM NOT THE ONLY ONE WHO HAS EXPERIENCED THIS PROBLEM. I HAVE SEEN BLOGS AND YOUTUBE VIDEOS WHO DESCRIBE SIMILAR EXPERIENCES. PLEASE HELP FIND A SOLUTION BEFORE SOMEONE IS SERIOUSLY HURT DO TO THIS PROBLEM.

THE CEL CAME ON AND THE ENGINE WAS HAVING A ROUGH START . I TOOK IT TO THE REPAIR SHOP AND AFTER USING THE STAR DIAGNOSTIC SYSTEM THE DIAGNOSES WAS CAMSHAFT ADJUSTERS IN FAILURE. THE REMEDY REPLACE THE CAMSHAFT ADJUSTERS. COST $3500.00. *TR