2017 Mercedes-Benz C-Class problems and complaints
Owners have filed 253 complaints with NHTSA about the 2017 Mercedes-Benz C-Class. The most-reported areas: Engine (83), Unknown Or Other (38), Electrical System (35).
Key takeaways
- 253 owner complaints on file with NHTSA.
- 12 involve a crash, 3 a fire, 17 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Engine | 83 | 33% |
| Unknown Or Other | 38 | 15% |
| Electrical System | 35 | 14% |
| Fuel/Propulsion System | 32 | 13% |
| Structure | 26 | 10% |
| Seat Belts | 26 | 10% |
| Air Bags | 18 | 7% |
| Steering | 15 | 6% |
| Power Train | 15 | 6% |
| Visibility | 8 | 3% |
| Wheels | 6 | 2% |
| Suspension | 5 | 2% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2017 Mercedes-Benz C-Class 2 DR 4WD | Not rated | Not rated | Not rated | Not rated |
| 2017 Mercedes-Benz C-Class C 4WD | Not rated | Not rated | Not rated | Not rated |
| 2017 Mercedes-Benz C-Class C RWD | Not rated | Not rated | Not rated | Not rated |
| 2017 Mercedes-Benz C-Class 2 DR RWD | Not rated | Not rated | Not rated | Not rated |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Unknown Or Other - filed 2026-08-26
The convertible roof gets stuck partially in open or closed position. It has to be forced closed. The vehicle is always garaged and the convertible was used very carefully but still has been troublesome from the beginning
Engine - filed 2026-07-27
2017 Mercedes c300 the switchover valve in the diagnostic module of the evaporative emission control system is jammed open. This issue was called for recall for models 2018 or later, but 2017 was not part of it.
Fuel System, Gasoline,electrical System,engine - filed 2026-05-15
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 att...
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More for the 2017 Mercedes-Benz C-Class
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.