2015 Mercedes-Benz C350 Engine Problems
- Complaints
- 2about this part
- Share
- 33%of 6 total for the year
- Median mileage
- 17,250miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2015 Mercedes-Benz C350, 33% of the 6 complaints for this model year. Where a mileage was given, the median is 17,250 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“While driving, the car loses throttle and the engine does not function at all. The following error shows on the dash: inoperative see operator's manual . When this happens, your only choice is to coast to a safe place. After restarting the car, it will function for a short time, only to reoccur. This obviously can be deadly if you cannot get off the highway before the car comes to a stop. This has happened at various speeds.”
NHTSA complaint #10948678, filed 2017-01, 17,500 milesRelated service bulletins
- 11017039Apr 1, 2025Complaint Vehicle with atypical reduced heat output. Cause Silicate granulate may have escaped from a damaged bag in the expansion reservoir (not visible), reducing the coolant…
- 11008064Aug 9, 2024In our continuing efforts to ensure the proper performance and quality of your vehicle, we are writing to inform you that on certain Model Year 2011-2018 C-Class, E-Class…
- 10158329Oct 9, 2017Oil in engine wiring harness
Engine: other model years
Other parts of the 2015 Mercedes-Benz C350
3 complaintsFuel system
1 complaintsOther or unknown
1 complaintsTransmission and drivetrain
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2015 Mercedes-Benz C350
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology