2003 Mercedes-Benz C Class Engine cooling Problems
- Complaints
- 2about this part
- Share
- 22%of 9 total for the year
- Median mileage
- 70,002miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 2003 Mercedes-Benz C Class, 22% of the 9 complaints for this model year. Where a mileage was given, the median is 70,002 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.
“2003 mercedes c240 stalls immediately after prolonged turnpike travel ( 1.5 hours) at exit ramp to an arterial roadway. This increases rearend accident potential. Mercedes checked vehicle but no report codes indicated. Suggested that it may be computer of sensor related. Mercedes suggested pulling over for 30 min. To let computer reset. First incident 12/17/08 second incident 12/28/08.”
NHTSA complaint #10253108, filed 2008-12, 70,003 miles“The contact owns a 2003 mercedes benz c240. The contact stated the coolant was leaking from the radiator into the transmission. The dealer was contacted and informed her that she had to flush the radiator and the transmission or replace the torque converter. If the failure was not repaired by flushing the system, the transmission would need to be replaced for over $2,000 at the contacts expense. There wee no recalls or warranties related to her vehicle. The manufacturer was contacted but offered no assistance. The failure mileage was 70,000. …”
NHTSA complaint #10411780, filed 2011-07, 70,000 milesEngine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2006 | 1 | 11% |
| 2004 | 3 | 20% |
| 2003 | 2 | 22% |
| 2002 | 5 | 16% |
| 2001 | 3 | 21% |
| 2000 | 2 | 25% |
| 1999 | 1 | 14% |
| 1996 | 2 | 33% |
| 1995 | 3 | 6% |
| 1994 | 2 | 13% |
Other parts of the 2003 Mercedes-Benz C Class
3 complaintsAir bags
1 complaintsEquipment
1 complaintsFuel system
1 complaintsOther or unknown
1 complaintsSeat belts
1 complaintsTransmission and drivetrain
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2003 Mercedes-Benz C Class
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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