AI Damage2006 Mercedes-Benz C Class: common problems
Owners of the 2006 Mercedes-Benz C Class filed 9 complaints with NHTSA, most often about tires and air bags. Details by component below, with sources.
Key figures
- Owner complaints
- 9
What fails most often
- 1 Tires 22% of all complaints
- 2 Air bags 11% of all complaints
- 3 Electrical system 11% of all complaints
- 4 Engine and cooling 11% of all complaints
- 5 Exterior lighting 11% of all complaints
- 6 Fuel system 11% of all complaints
- 7 Powertrain 11% of all complaints
- 8 Seats 11% of all complaints
- Tires: 2 complaints (22% of all).
- Air bags: 1 complaints (11% of all).
- Electrical system: 1 complaints (11% of all).
- Engine and cooling: 1 complaints (11% of all).
- Exterior lighting: 1 complaints (11% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 2.5 L · petrol · 6 cyl
- 3 L · petrol · 6 cyl
- 3.5 L · petrol · 6 cyl
- 5.4 L · petrol · 8 cyl
- automatic, 5-speed
- automatic, 7-speed
- manual, 6-speed
Drive: RWD, AWD
Symptoms owners describe
How many of the 9 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) |
|---|---|---|---|
| Tires | 2 | 0 | 0 |
| Air bags | 1 | 0 | 0 |
| Electrical system | 1 | 0 | 0 |
| Engine and cooling | 1 | 0 | 0 |
| Exterior lighting | 1 | 0 | 0 |
| Fuel system | 1 | 0 | 0 |
| Powertrain | 1 | 0 | 0 |
| Seats | 1 | 0 | 0 |
| Service brakes | 1 | 0 | 0 |
| Structure | 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.
Battery went dead on our 2006 c320 mercedes the air bag warning light came on after the car was restarted and the dealer cllaims the bag can deploy without warnig if not repaired the car only has 36000 miles they refused to fix problem wiyh ouy being paid because the vehicle is 30 days out of warranty.
Highway cruising at steady state speed, aprox 65 mph. Right front tire failure. Control was maintained. Pulled off to shoulder and replaced tire with spare. Tire is being replaced. Damaged tire is available.
Dt*: the contact stated while wearing sunglasses the instrument panel was not readable. The dealership determined this was how the vehicle was manufactured. Updated 09/15/06.
Dt*: the contact stated while traveling various speeds, there was a knocking sound coming from the engine compartment. The dealership was unable to duplicate the problem. The brake pedal shakes while depressed. The dealership determined this was normal operating conditions.
The mercedes clk350 vin [xxx]- the passenger seat and driver seat when released to allow a rear passenger out of the car causes the head rest to automatically descend and can trap the rear occupants hand in place as it did with a 10 year child in my car.
Also the mercedes logo on my new wheels that was put on is rusted and does not new while the old wheels that were not replaced have the mercedes logo that looks new. Also, if there is any extra or special warranty for tires and wheels ...I was not made aware of this warranty while purchasing the car.
The vehicle lurched continuously while driving at 10 mph. There was also a loud clunking noise when the vehicle shifted gears. The vehicle was taken to a service dealer, who determined there was a problem with the fuel pump. The fuel pump was replaced, but the problems continued.
Many newer cars are equipped with blinding, blue-green, headlights that are a safety hazard and should be prohibited. There are several problems. First, when seen from any angle, these headlights are highly distracting, in that they draw ones eyes from the road ahead and on either side; the reason that they are…
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 11,366 of 36,656 model years in the NHTSA data (top 31% most complained about).
On average one model year of the C Class has 11 complaints (17 years in the data). This year has 9, below average.
What to check before buying
- Tires. Tire age by DOT code, bulges, wear pattern.
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Other years of this model
Questions and answers
What are the most common problems with the 2006 Mercedes-Benz C Class?
Owner complaints to NHTSA most often mention: tires, air bags, electrical system. Total complaints: 9. The most frequent symptoms in complaint texts: knocking, grinding or other noise (22%), airbag warning light (11%), fuel system, fuel smell (11%).
How many service bulletins (TSB) were issued for the 2006 Mercedes-Benz C Class?
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 2006 Mercedes-Benz C Class 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 2006 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 2026-11-05.