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2004 Mercedes-Benz C-class: common problems and reliability
· W203One of the better C-class years.
77 owner complaints, most about electrical system. No recalls.
Should I buy a 2004 C-class?The 2004 Mercedes-Benz C-class has 77 owner-filed NHTSA complaints and 0 recalls on record. The most-reported areas are electrical system and engine and engine cooling. Owners most often flag rust on pre-facelift models: recurrent: owners report rust as a significant problem on early chassis, especially in snowy/salted-road regions.
Safety record for the 2004 model year
Source: NHTSA complaints and recalls filed for 2004 Mercedes-Benz C-class vehicles (US, public record).
The Year Score compares this year with other C-class years only. How we score it
Is 2004 a good year for the C-class?
Across the 30 C-class model years we track, complaint volume runs from 18 (1997) to 898 (2015). With 77 complaints, the 2004 C-class sits below the model's median of 172.
These are raw NHTSA complaint totals, not adjusted for how many cars sold or how long each model year has been on the road. Older and higher-selling years accumulate more complaints.
Where owners report problems
What owners report on the W203 C-class
Owners describe the W203 as a decently reliable car when properly maintained, but warn that repairs are expensive and that the three-pointed star badge adds cost to any fix.
- Rust on pre-facelift models
Recurrent: owners report rust as a significant problem on early chassis, especially in snowy/salted-road regions.
- Bouncing door lock pins
Recurrent: a known issue where the lock pin lacks resistance and bounces; a quick fix is available.
- Multi-contour seat controls not working
Recurrent: often caused by a blown fuse or damaged wiring under the seat.
- Turbo failure on diesel models
Isolated: one owner reported the turbo failing after two months of ownership.
- Alternator failure at low mileage
Isolated: one owner reported needing a new alternator after only 80,000 miles.
Owner insights for the W203 C-class. Read the full W203 owner report.
Typical used price
Used C-class listings typically run $11,494–$27,080.
Other C-class model years
Compare every C-class year side by side to see how 2004 ranks against the rest.
Compare the C-class against its rivals
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