Mercedes-Benz C 300 fuel problems
23 complaint narratives mention fuel terms.
Key facts
490 owner complaints analyzed
46 distinct recall campaigns
26,876 mi median reported failure mileage
Scope: 2017 to 2026 model years. Data snapshot: . 130 complaints include usable failure mileage.
Fuel system concerns evidence
23 of 490 complaints match this topic (4.7%). The keyword filter can include complaints that mention a transmission without reporting its failure. View matching rules.
Owner report 11383821 · 2020-12-16 (December 16, 2020)
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 MI…
Owner-reported narrative. 55,000 miles reported. Look up ODI 11383821 at NHTSA ↗
Owner report 11395633 · 2021-02-10 (February 10, 2021)
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.
Owner-reported narrative. Look up ODI 11395633 at NHTSA ↗
Owner report 11396042 · 2021-02-13 (February 13, 2021)
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
Owner-reported narrative. 47,000 miles reported. Look up ODI 11396042 at NHTSA ↗
Owner report 11430028 · 2021-08-22 (August 22, 2021)
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 …
Owner-reported narrative. Look up ODI 11430028 at NHTSA ↗
Owner report 11439577 · 2021-11-06 (November 6, 2021)
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.
Owner-reported narrative. Look up ODI 11439577 at NHTSA ↗