What 251 owners told NHTSA about the 2017 Mercedes-benz C-class Phev

When starting the car in the morning there is fuel smell that gets into the cabin. Additionally, as the car is idle during the drive, the smell of fuel is very obvious. Windows have to be rolled down to avoid the smell

NHTSA ODI 11453550

Strong gas smell when car is idling and miles to empty goes down very quickly, approximately a mile or more a minute. There is no recall for this problem and Mercedes is very aware of this problem.

NHTSA ODI 11439577

Strong gas odor in the cabin and in motion to the point of causing me to be light headed with my children in the car. Smell of gas coming from the engine when parked. No lights or warnings and it does not occur all of the time just sometimes however ive noticed it 3x the last 5x i have drove my car, the cabin was only extremely bad once.

NHTSA ODI 11438159

MB USA extended the warranty coverage on the low pressure fuel hoses that connects to the high pressure fuel pump. The reason is "under certain cold ambient conditions during a cold start of the engine, the low pressure fuel hose at that connection may experience slight fuel weeping". MB USA, however, ruled out a safety risk. NHTSA needs to investigate it. If MB USA found the fuel pressure line is defective, they needed to do a recall. I believe it must be a recall as fuel leaks is not only a safety risk but also a serious health hazard to the occupants. What if the occupants have sinusitis and don't smell well. What if the leaks is too small to smell enough but can still be a health issue.

NHTSA ODI 11430028

CAR IS MAKING WEIRD NOISES FROM THE FRONT ELECTRICAL AC SIDE- IT IS HARD TO BREATH AC AIR (SMELL LIKE PLASTIC) . PRESSING BRAKES CAR IS HANDLING BAD AND GOES SLIGHTLY INTO OTHER LANE. I TOOK CAR TO DEALER- THEY COULD NOT FIND THE PROBLEM

NHTSA ODI 11405100

A FUEL LINE IN THE ENGINE COMPARTMENT JUST ABOVE THE SKID PLATE ON THE DRIVES SIDE JUST RIGHT OF THE FRONT WHEEL WELL LEAKS FUEL WHERE THE LINE IS CRIMPED COMING FROM THE HIGH PRESSURE FUEL PUMP. FUEL COLLECTS ON THE SKID PLATE AND WHEN A STOP AT IDEA PRODUCES A STRONG FUEL SMELL IN THE CABIN OF THE CAR

NHTSA ODI 11396042

GAS LEAKING IS COMMON ISSUE AND WHEN TURNING CAR ON THERE IS A GAS SMELL. WHEN TURNING HEAT ON THERE IS A GAS SMELL. MERCEDES BENZ SAID THERE IS A LOT OF ISSUES WITH THE CLAMPS. IT IS A COMMON ISSUE. CAN CAUSE FIRE.

NHTSA ODI 11395633

TL* THE CONTACT OWNS A 2017 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE THE HEATER WAS ACTIVATED, THERE WAS AN ABNORMAL FUEL ODOR COMING FROM THE VENTS INTO THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO A DEALER OR MECHANIC TO BE DIAGNOSED. THE CONTACT STATED THAT THE FUEL ODOR ONLY OCCURRED DURING THE WINTER. THE CONTACT ALSO STATED THAT THE FUEL TANK HOSE CLIP THAT GOES TO THE ENGINE BECAME LOOSE AND CAUSE THE FUEL ODOR TO PENETRATE INSIDE THE VEHICLE. THE MANUFACTURER WAS CONTACTED. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 55,000. ## VIN PASSED ## MERCEDES-BENZ 2017C300 ##

NHTSA ODI 11383821

EXHAUST WAS COMING INTO THE CAR FOR MONTH. WHEN I STARTED THE CAR TO LET IT WARM UP IN WINTER MONTHS, I WOULD GET IN AND WONDER WHY I SMELLED GAS OR FUMES. FIGURED IT WAS FROM SITTING. NO DASHBOARD LIGHTS CAME ON, NO C02 SENSORS IF THERE ARE ANY, NOTHING CAME ON IN THE INTERIOR TO WARN ME THERE WAS AN INSANE. ONE PERSON TOLD ME THE PART WAS 'DEFECTIVE' ANOTHER PERSON TOLD MY BOYFRIEND THE PART WAS 'SPLIT MOST LIKELY FROM ROAD CONDITIONS' - THIS PUT MY LIFE AND MY 10 YEAR OLD'S LIFE AT RISK. IT REALLY NEEDS TO BE CHECKED OUT BECAUSE THE C300 COUPE IS RIDDLED WITH SMALL IDDUES

NHTSA ODI 11298512

TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ C300. WHEN THE CONTACT STARTED THE VEHICLE WITH THE MOBILE APP, SHE NOTICED A FUEL ODOR EMITTING FROM THE VEHICLE. WHEN THE VEHICLE WAS STARTED MANUALLY, THE ODOR WAS NOT PRESENT. THE CONTACT TOOK THE VEHICLE TO PARK PLACE MOTORCARS DALLAS (LOCATED AT 6113 LEMMON AVE, DALLAS, TX 75209, 877-475-5033) WHERE IT WAS DIAGNOSED THAT THE FUEL HOSE WAS LEAKING AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 55,000.

NHTSA ODI 11279530