2009 Mercedes-Benz C Transmission and drivetrain Problems
- Complaints
- 4about this part
- Share
- 29%of 14 total for the year
- Median mileage
- 10,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the transmission and drivetrain of the 2009 Mercedes-Benz C, 29% of the 14 complaints for this model year. Where a mileage was given, the median is 10,500 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“At 43,500 and 54 months the transmission in the car had to be replaced. The car has always been properly serviced at the mercedes dealer. I believe this model/make has defects as I have brought it back for service many times.”
NHTSA complaint #10563723, filed 2014-02, 43,400 miles“The contact owns a 2009 mercedes c350. The contact stated that when the accelerator pedal was engaged, the transmission surged forward at a high rate. The failure occurred intermittently. The dealer was unable to duplicate or diagnose the failure. The failure mileage was 15 and the current mileage was 32000.”
NHTSA complaint #10340967, filed 2010-07, 15 miles“The contact owns a 2009 mercedes benz c300. Whenever the contact placed the vehicle into reverse or drive I would violently switch into gear causing the vehicle to slightly surge forward. The vehicle has been taken to the dealership on thirteen different occasions where several different parts have been serviced on the transmission;however the contact is still experiencing the failure. The contact has noticed the failure since the vehicle was purchased. The current and failure mileages were 14000.”
NHTSA complaint #10313318, filed 2010-02, 14,000 miles“The contact owns a 2009 mercedes benz c300. The contact stated that the vehicle was experiencing several computer defects. While parked on a hill and attempting to place the gear shifter into reverse, the vehicle would roll forward instead of backwards. The vehicle would roll forward approximately one foot as if it were in neutral. During this time, the steering would lock and the brakes would lose power. It would take tremendous force to depress the brake pedal and stop the vehicle. The dealer and manufacturer could not assist with the repairs. There were no recalls available. …”
NHTSA complaint #10272853, filed 2009-06, 7,000 milesRelated service bulletins
- 10038977Apr 4, 2011Mercedes-benz: the auto-transmission switches to limp home mode or has no power. There are multiple possible fault codes. A piston may be damaged.
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2009 | 4 | 29% |
Other parts of the 2009 Mercedes-Benz C
4 complaintsElectrical system
3 complaintsBrakes
2 complaintsSteering
2 complaintsAir bags
1 complaintsElectronic stability control
1 complaintsEngine cooling
1 complaintsEquipment
1 complaintsSeat belts
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2009 Mercedes-Benz C
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology