AI Damage2009 Mercedes-Benz C350: common problems
Owners of the 2009 Mercedes-Benz C350 filed 65 complaints with NHTSA, most often about air bags and steering. Details by component below, with sources.
Key figures
- Owner complaints
- 65
- involving a crash
- 1
What fails most often
- 1 Air bags 38% of all complaints
- 2 Steering 31% of all complaints
- 3 Electrical system 25% of all complaints
- 4 Exterior lighting 20% of all complaints
- 5 Engine 8% of all complaints
- 6 Seats 5% of all complaints
- 7 Service brakes 5% of all complaints
- 8 Fuel/propulsion system 3% of all complaints
- Air bags: 25 complaints (38% of all), 1 of them with a crash reported by the owner.
- Steering: 20 complaints (31% of all).
- Electrical system: 16 complaints (25% of all).
- Exterior lighting: 13 complaints (20% of all).
- Engine: 5 complaints (8% of all).
Symptoms owners describe
How many of the 65 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) |
|---|---|---|---|
| Air bags | 25 | 1 | 0 |
| Steering | 20 | 0 | 0 |
| Electrical system | 16 | 0 | 0 |
| Exterior lighting | 13 | 0 | 0 |
| Engine | 5 | 0 | 0 |
| Seats | 3 | 0 | 0 |
| Service brakes | 3 | 0 | 0 |
| Fuel/propulsion system | 2 | 0 | 0 |
| Powertrain | 2 | 0 | 0 |
| Fuel system | 1 | 0 | 0 |
| Seat belts | 1 | 0 | 0 |
| Structure | 1 | 0 | 0 |
| Suspension | 1 | 0 | 0 |
| Wheels | 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.
My driver side airbag did not deploy in a front end collision at an estimated 50 mph.
Rear brake lines corroded leading to loss of brake fluid while on the road. My at the time 4 year old son and I were in the car (I was the driver). This was in December of 2022 so almost two years ago.
Rear subframe rusted through on both sides and broke while driving about a year ago. Nearly lost control of the car. There was 55,000 miles on the car at the time. Also, I have another vehicle same w204 car series 120,000 miles on this car. Vin [xxx]. Last week the rear subframe broke on that car while driving.
Now my power steering malfunction ebs light has come on. This is just too much. I just paid $1300 for service b and some other things that needed to be replaced. I am tired of always having to pay to replace lights.
Hi, on my commute home from work, I was getting ready to exit the highway by decelerating. My car swerved and almost lost control when I began to press the brakes. There were no cars at 7am on the weekend, so I was able to coast to the light at the end of the 1/4 mile exit ramp.
The radio cuts on and the only thing that displays on the dashboard is the mileage no other lights. When the key is turned to first or second position. The day before when my car would not start I was able to take the key out of the ignition and replace it in the car started right up this time it does nothing.
There is a fault switch with the headlights in off position the left right turn signal flash when the keys are not in the vehicle. It drains the battery which have replaced twice. We determined that if we keep the light switch in automatic position it does not happen.
The car has started to burn on the inside , smoke comes out of the engine. Car transports children. To and from school. Eery other onth lamps burn out, happening since the car was new. Finally went to shop again today and they put it on paper. Wire coating falling apart, causes burn out of lamps.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 4,609 of 36,659 model years in the NHTSA data (top 13% most complained about).
On average one model year of the C350 has 28 complaints (13 years in the data). This year has 65, above average.
What to check before buying
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Exterior lighting. Headlamps, leveling, sensors and mounts after a frontal hit.
Other years of this model
Questions and answers
What are the most common problems with the 2009 Mercedes-Benz C350?
Owner complaints to NHTSA most often mention: air bags, steering, electrical system. Total complaints: 65. The most frequent symptoms in complaint texts: steering or power steering problems (20%), headlights and tail lights (14%), won't start (14%).
How many service bulletins (TSB) were issued for the 2009 Mercedes-Benz C350?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2009 Mercedes-Benz C350 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2009 models
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 2026-11-06.