2004 Mercedes-Benz C230 Engine Problems
- Complaints
- 4about this part
- Share
- 13%of 31 total for the year
- Median mileage
- 70,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine of the 2004 Mercedes-Benz C230, 13% of the 31 complaints for this model year. Where a mileage was given, the median is 70,000 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.
“Engine stalled while waiting for a left turn. Have a quarter tank of gas. Check engine light was on. Fault light did not come on. Car was pushed while in neutral but breaks did not function. Almost hit a parked car. This is the second time of occurrence. Repair is more than $1000. Mechanic found motor oil leaking on engine parts. In 2003 engine stalled while I was driving on a fwy. Repair was a few thousand dollars.”
NHTSA complaint #10559504, filed 2014-01, 204,600 miles“The contact owns a 2004 mercedes benz C230. While driving between 25-30 MPH, the accelerator pedal was depressed but the vehicle failed to respond. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the transmission and radiator needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 70,000. Updated 02/05/16 updated 02/11/16”
NHTSA complaint #10809508, filed 2015-12, 70,000 miles“The contact owns a 2004 mercedes benz C230. While starting the vehicle, there was a knocking sound coming from the engine compartment and the check engine warning light illuminated. The vehicle was taken to a dealer who diagnosed that if the sound became progressively worse, the intake and exhaust cam shaft adjuster, the center bolts for the cam shaft, and the chain tensioner would need to be replaced. The vehicle was not repaired. The failure recurred on numerous occasions. The manufacturer was not notified of the failure. The failure mileage was 59,000.”
NHTSA complaint #10725574, filed 2015-06, 59,000 miles“Fuel system is leaking getting check engine lights can't pass smog and EGR hoses that run down by the super charger are leaking cause the rubber they used knowing this would happen all have to do with the check engine light on”
NHTSA complaint #11180615, filed 2019-02Related service bulletins
- 11017039Apr 1, 2025Complaint Vehicle with atypical reduced heat output. Cause Silicate granulate may have escaped from a damaged bag in the expansion reservoir (not visible), reducing the coolant…
Engine: other model years
Other parts of the 2004 Mercedes-Benz C230
7 complaintsEngine cooling
6 complaintsFuel system
6 complaintsSeat belts
5 complaintsBrakes
3 complaintsTransmission and drivetrain
3 complaintsOther or unknown
2 complaintsBody and structure
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsAir bags
1 complaintsSteering
1 complaintsTires
1 complaints
← All problems reported for the 2004 Mercedes-Benz C230
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