Overview
Community orientation
The W203 C-Class shares every one of its spine engines with generations already in the graph: the M271 supercharged four-cylinder petrol, the M112 V6 (C 240, C 320) and — from the 2004 facelift — the M272 V6 (C 230, C 280, C 350), plus the OM646 four-cylinder and OM642 V6 diesels. It therefore adds no new occurrence patterns of its own; the M112, M271, M272, OM646 and OM642 patterns resolve onto this generation's configurations at the engine level. See the per-configuration breakdown for which patterns apply to which build window. Community orientation only, not a reliability rating or a purchase recommendation.
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Filtered: M271 · 1.8L petrol (M271).
Known issues
Sorted by severity. Tap an issue to reveal its symptom, repair and what to check.
Engines & reliability
Tap a row to filter the issues to that engine.
Pre-purchase checklist
Cold start
- ☐Listen for chain rattle during a fully cold start