2017 Mercedes-Benz C 300 fuel/propulsion system problems
30 owner complaints filed with NHTSA name the fuel/propulsion system on the 2017 Mercedes-Benz C 300 — 14% of all complaints for this model year.
What owners report
“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.”
filed Dec 31, 2025
“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.”
filed Oct 21, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other C 300 years
| Year | Reports | Share |
|---|---|---|
| 2023 C 300 | 1 | 5% |
| 2022 C 300 | 4 | 16% |
| 2020 C 300 | 3 | 9% |
| 2019 C 300 | 7 | 11% |
| 2018 C 300 | 9 | 9% |
Other reported problem areas on the 2017 Mercedes-Benz C 300
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.