The contact owns a 2017 Mercedes-Benz C300. While driving at approximately 15 mph, the contact observed smoke emanating from under the hood. The vehicle was driven to her work location and parked. Upon exiting the vehicle and opening the hood, she observed orange flames coming from the engine compartment. A parking attendant extinguished the fire, and a police and/or fire report was filed. The vehicle was towed to a dealer and diagnosed with a fuel line leak that caused the engine harness to come apart. The leaking fuel hose from the high-pressure fuel pump caused damage to the high-pressure pump, engine harness, vacuum transducer, and coolant feed line from the thermostat to the firewall. The following components needed replacement: high-pressure fuel pump, rubber fuel hose, engine harness, pressure transducer, and intake manifold. The vehicle was repaired. Five months later, the contact experienced another failure she believes was associated with the engine fire. While parked and attempting to start the vehicle, it did not start. The vehicle was towed to a dealer and diagnosed with a faulty starter that needed replacement. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 65,422.
2017 Mercedes-Benz C300 fuel system problems
33 complaints (15% of all complaints for this car). Typical mileage when it fails: 55,000.
- owner complaints
- 33
- of this car's complaints
- 15%
- typical mileage
- 55,000
- crashes
- 0
- recalls
- 0
Which part fails
Owners did not name a specific part.
At what mileage
Complaints by mileage at the time of the problem.
Mercedes-Benz C300 fuel system problems in other years
Specific symptoms reported on the 2017 Mercedes-Benz C300 fuel system
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
No recalls on record for this model year.
What 2017 Mercedes-Benz C300 owners say
Most recent owner complaints, unedited.
strong evident fuel/ gas smell when driving and when the car is in park after driving.
UNKNOWN it was just one day I started my car and turned the A/C on and I started getting this strong gasoline smell. I went on like a saw there is a recall for this problem for the M274 engines.
Cabin smells heavily like fuel and has a check engine light possibly a fuel leak
small to much gas inside the cab and outside and bouth seatbelt doosent work corectly
my whole entire car smells like gas. I cannot drive this car around because I will pass out and it is a safety hazard. There is a recall for this exact same issue, just not for my Vin number. I would like to get this done for my car, please.
Keep getting a code P052E! Changed the oil and code went away for a few days then came back. Looked into getting it fixed and it seems like Mercedes has known about this issue and hasn’t called for a recall on this piece of equipment! Very costly to fix and says it needs to be replaced every 30k to 50k miles! At around 1k to 3k to fix everytime that’s something they should recall
The contact owns a 2017 Mercedes-Benz C300. The contact stated while driving at an undisclosed speed, the check engine warning light was illuminated but then disappeared. The vehicle was taken to an independent mechanic to be diagnosed. The vehicle was diagnosed with a failed actuator. The contact was informed that an actuator needed to be replaced. The vehicle was not repaired. The contact was informed of the federal safety agency Campaign Number: 21V961000 (Fuel System, Gasoline) however, the VIN was not associated with the recall. The manufacturer was made aware of the failure and advised the contact to report the failure to the federal safety agency Hotline. The failure mileage was approximately 100,000.
During cold starts the fuel injectors/clamps leak causing strong gasoline smell inside the cabin. After research online this is a common issue with W205 systems. I am beyond surprised this has not been investigated and reported as a safety recall as it can pose a fire hazard. Please investigate and Mercedes should be fixing this issue….
every winter this car will have a heavy smell of gas in the engine and the cabin, after driving it for around 15 minutes with the windows open in the cold it goes away. no problem in the summer time. My mechanic said it's a common problem with these cars.
Questions about the 2017 Mercedes-Benz C300 fuel system
Does the 2017 Mercedes-Benz C300 have fuel system problems?
Owners have filed 33 complaints about the fuel system of the 2017 Mercedes-Benz C300, 15% of all its complaints.
At what mileage do 2017 Mercedes-Benz C300 fuel system problems start?
The typical (median) mileage in owner complaints is 55,000 miles.
Was there a recall on the 2017 Mercedes-Benz C300 fuel system?
There is no recall for this problem on this model year.
What year does the Mercedes-Benz C300 have the most fuel system problems?
The Mercedes-Benz C300 model years with the most fuel system complaints are 2015 (70 complaints), 2016 (67 complaints) and 2011 (44 complaints).
Other 2017 Mercedes-Benz C300 problems
Engine 79Electrical 31Body 24Seat belts 21Airbags 15Steering 13Transmission 12Visibility 9Driver assistance 4Acceleration 2Brakes 2Suspension 2Tires 2
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