2004 Mercedes-Benz C320 Engine Problems
- Complaints
- 1about this part
- Share
- 7%of 15 total for the year
- Median mileage
- 1,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine of the 2004 Mercedes-Benz C320, 7% of the 15 complaints for this model year. Where a mileage was given, the median is 1,000 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.
“The contact owns a 2004 mercedes benz C320. The contact stated that while driving at various speeds, the vehicle stalled without warning. The contact mentioned that the failure occurred several times. The vehicle was taken to the dealer. The technician was unable to diagnose the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired. The VIN was unavailable. The failure mileage was 1,000 and the current mileage was 109,000.”
NHTSA complaint #10513731, filed 2013-05, 1,000 milesRelated 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 C320
5 complaintsAir bags
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsBrakes
1 complaintsElectrical system
1 complaintsElectronic stability control
1 complaintsEngine cooling
1 complaintsEquipment
1 complaintsLatches, locks and linkages
1 complaintsOther or unknown
1 complaintsSteering
1 complaintsBody and structure
1 complaints
← All problems reported for the 2004 Mercedes-Benz C320
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