2004 Mercedes-Benz C Class Transmission and drivetrain Problems
- Complaints
- 3about this part
- Share
- 20%of 15 total for the year
- Median mileage
- 39,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the transmission and drivetrain of the 2004 Mercedes-Benz C Class, 20% of the 15 complaints for this model year. Where a mileage was given, the median is 39,500 miles. 1 a fire, according to the filers.
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.
“I have black mercedes c230 kompressor sports sedan 2004 model. Car was purchased brand new at mercedes authorized dealer. There is no modification made to this car and all the servicing done at mercedes authorized dealer since I bought this car. It had only 58000 miles. Last b servicing which checked any safety related issues and includes regular maintenance, was done at authorized dealer on 02/18/2012. No issue was informed on 02/18/2012 to us by mercedes authorized dealer servicing department. …”
NHTSA complaint #10464581, filed 2012-07, 58,000 miles“The contact stated there was an odor coming from the transmission area. The contact believed the odor was coming from either an oil or transmission leak. The dealership was unable to determine the source of the odor. The contact was concerned this was a potential fire hazard. The vehicle is a 2004 Mercedes-Benz c230.”
NHTSA complaint #10146555, filed 2005-12, 21,000 miles“2004 mercedes benz c- class wagon. Consumer writes in regards to defect that allows coolant to leak into the transmission, requiring replacement of the transmission, torque converter and radiator the consumer stated he was forced to spend over six thousand dollars to have the transmission replaced, to correct a defect mercedes benz was aware of.”
NHTSA complaint #10437010, filed 2011-11Related service bulletins
- 10019822Jan 1, 2007Inspect transmission pilot bushing at electrochydraulic unit and replace if necessary. The transmission pilot bushing may have been installed on the control units with…
- 10017493Sep 1, 2005The pvc seam seal on the transmission support bracket may not have been properly applied. Inspect transmission support seam seal, reseal if necessary.
Transmission and drivetrain: other model years
Other parts of the 2004 Mercedes-Benz C Class
3 complaintsAir bags
2 complaintsElectrical system
2 complaintsSeats
2 complaintsTires
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsFuel system
1 complaintsOther or unknown
1 complaintsSteering
1 complaints
← All problems reported for the 2004 Mercedes-Benz C Class
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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