AI DamageMercedes-Benz C204.9: problems, complaints, bulletins
Summary for the Mercedes-Benz C204.9 across 4 model years: 18 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- 1 Electrical system 28% of all complaints
- 2 Engine 22% of all complaints
- 3 Steering 22% of all complaints
- 4 Air bags 17% of all complaints
- 5 Fuel/propulsion system 17% of all complaints
- 6 Vehicle speed control 11% of all complaints
- 7 Electronic stability control 6% of all complaints
- 8 Structure 6% of all complaints
- Electrical system: 5 complaints (28% of all).
- Engine: 4 complaints (22% of all).
- Steering: 4 complaints (22% of all).
- Air bags: 3 complaints (17% of all).
- Fuel/propulsion system: 3 complaints (17% of all).
Symptoms owners describe
How many of the 18 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 5 | 0 | 0 |
| Engine | 4 | 0 | 0 |
| Steering | 4 | 0 | 0 |
| Air bags | 3 | 0 | 0 |
| Fuel/propulsion system | 3 | 0 | 0 |
| Vehicle speed control | 2 | 0 | 0 |
| Electronic stability control | 1 | 0 | 0 |
| Structure | 1 | 0 | 0 |
| Suspension | 1 | 0 | 0 |
| Other | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The anti theft system failed after 59,000 miles, locke the steering wheel and won't allow the car to start. Mercedes charges 1,800 dollars to replace it.. Needs to be recalled very dangerous.
My mechanic told me that my 2013 mercedes c250 has a timing chain/camshaft adjuster sprocket problem and that it happens a lot on these cars. I found hundreds of other people online with the same problem. It starts usually as soon as the warranty ends. The cost to fix it at the dealership is $5600.
Stopped at gas station to get gas for car as soon I was pumping gas I can smell & see gas falling on the floor right by the back passenger rear tire. Waited for dry up. Then went home parked car came back out saw a puddle of gas waited for dry up.
I have only owned the car for 4 months & the airbag light turned on. The dealership I purchased my vehicle at refuses to look at it unless I pay them first.
Sudden loss of power while trying to accelerate,engine light comes on and car goes into limp mode. Code p002. Car has 44450 miles.
My vehicle and many other mercedes benz models suffer a failed electronic ignition switch and electronic steering lock. This is a known defect amongst many models/years of mercedes benz vehicles and only a dealer can repair. The cost of repair is $1,900.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
Other models of this make
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.