2015 Mercedes-Benz C-Class problems and complaints
Owners have filed 444 complaints with NHTSA about the 2015 Mercedes-Benz C-Class. The most-reported areas: Engine (134), Structure (75), Unknown Or Other (74).
Key takeaways
- 444 owner complaints on file with NHTSA.
- 11 involve a crash, 1 a fire, 10 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Engine | 134 | 30% |
| Structure | 75 | 17% |
| Unknown Or Other | 74 | 17% |
| Fuel/Propulsion System | 71 | 16% |
| Electrical System | 54 | 12% |
| Suspension | 32 | 7% |
| Steering | 28 | 6% |
| Air Bags | 26 | 6% |
| Power Train | 23 | 5% |
| Visibility | 11 | 2% |
| Service Brakes | 10 | 2% |
| Forward Collision Avoidance | 9 | 2% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2015 Mercedes-Benz C-Class 2 DR RWD | Not rated | Not rated | Not rated | Not rated |
| 2015 Mercedes-Benz C-Class 2 DR 4WD | Not rated | Not rated | Not rated | Not rated |
| 2015 Mercedes-Benz C-Class 4 DR RWD | 4/5 | 4/5 | 5/5 | 4/5 |
| 2015 Mercedes-Benz C-Class 4 DR 4WD | 4/5 | 4/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Unknown Or Other - filed 2026-09-02
I am reporting a potential safety defect involving the locking/key-detection system in my 2015 Mercedes-Benz C300. On [XXX], at approximately [XXX] p.m. in Coral Ridge, Fort Lauderdale, I secured my young son in his car seat. My purse, containing the key fob, and my phone were on the front passenger seat. I closed the...
Structure - filed 2026-09-01
The contact owns a 2015 Mercedes-Benz C300. While the contact’s son was driving approximately 20 MPH, the vehicle veered to the left and into the next lane when the brake pedal was depressed. The vehicle was cautiously driven back to the residence and parked. The vehicle was later towed to the local dealer to be diagno...
Suspension - filed 2026-08-28
I am a mechanic speaking on the behalf of a customer; this customer is experiencing problems with her rear subframe. The older generation of her car has a famous issue with rear subframe rusting out. Her car uses an updated part number that is almost identical in construction to the failure prone part that was famous f...
Diagnose it yourself
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
More for the 2015 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.