2015 Mercedes-Benz C300 fuel/propulsion system problems
66 owner complaints filed with NHTSA name the fuel/propulsion system on the 2015 Mercedes-Benz C300 — 17% of all complaints for this model year.
What owners report
“I was driving my car was sputtering or trying to shut off while I press the gas and I let go of the gas and it catches and stayed on. I took it to the dealership and they said they found nothing wrong. May 3rd around 12pm im driving on the freeway and as im getting on the express lane going 60 it…”
filed May 7, 2026
“Fuel hose system leaking. Inhalation of gas fumes caused headaches and nausea. Risk of vehicle fire. Yes, the problem has been confirmed by a Mercedes dealer. This is a known issue with Mercedes C300 2015 models and other years. There have been other complaints/lawsuits against Mercedes not wanting…”
filed Dec 25, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other C300 years
| Year | Reports | Share |
|---|---|---|
| 2016 C300 | 57 | 20% |
| 2014 C300 | 1 | 1% |
| 2013 C300 | 2 | 1% |
| 2012 C300 | 8 | 3% |
| 2011 C300 | 38 | 8% |
| 2010 C300 | 26 | 6% |
| 2009 C300 | 4 | 1% |
| 2008 C300 | 2 | 0% |
Other reported problem areas on the 2015 Mercedes-Benz C300
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.