Mercedes-Benz · S203 · 2001-2007

S203 Guides

Look for well-maintained examples with full service history and lower mileage to ensure reliability and value retention. Avoid high-mileage vehicles with deferred maintenance, particularly on automatic transmission models.

IssueSeverityNotes
Automatic transmission seal degradationHighMay cause fluid leaks and shifting issues on higher-mileage examples
PCV system carbon buildupMediumAffects petrol engines with extended service intervals
Sunroof mechanism failuresMediumDrainage issues can lead to interior water intrusion