2015 Mercedes-Benz C300 engine problems
127 owner complaints filed with NHTSA name the engine on the 2015 Mercedes-Benz C300 — 34% of all complaints for this model year.
What owners report
“The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 40 MPH, the vehicle unexpectedly veered to the left. There was no warning light illuminated. The contact stated that the steering wheel became inoperable, and the contact was unable to straighten the steering wheel. The…”
filed Aug 6, 2025
“Check Engine light came on recently, fault code P052E is identified by scanner. Car has 60,000 miles on original it. MB dealer wants to charge $300 for diagnostics, repair job (parts and labor) may cost over $2,000. Since this is critical emission compliance part/system, why is it not recalling?”
filed Jun 26, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- In the event that the engine or transmission cannot turn over, the starting current…Campaign 17V114000 · Feb 23, 2017
Engine problems in other C300 years
| Year | Reports | Share |
|---|---|---|
| 2016 C300 | 93 | 33% |
| 2014 C300 | 2 | 2% |
| 2013 C300 | 8 | 3% |
| 2012 C300 | 5 | 2% |
| 2011 C300 | 10 | 2% |
| 2010 C300 | 13 | 3% |
| 2009 C300 | 16 | 3% |
| 2008 C300 | 31 | 5% |
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.