Mercedes-Benz S-Class W108/W109 250
Model overview
A model overview is not available for this generation yet.
Engine overview · 2.5L 6-cyl PETROL
A smooth, durable classic straight-six when properly maintained, but condition varies widely with age. Cooling, sealing and the distinct carburettor or mechanical-injection systems deserve careful attention.
Pros
- Smooth naturally aspirated six-cylinder character.
- Straightforward period mechanical design.
- Strong classic-car specialist support.
Cons
- Age-related component deterioration can dominate ownership costs.
- 250 S and 250 SE fuel systems require different servicing.
- Neglected overheating can cause major engine damage.
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- Cooling-system conditionHigh
- Fuel-system condition differs by variantMedium
- Oil leaks and seal deteriorationMedium
- Timing-chain and valve-train service historyHigh
Maintenance
Follow the applicable Mercedes-Benz schedule and specialist guidance, with variant-specific servicing for the carburetted 250 S or fuel-injected 250 SE.
These are general ownership concerns, not a diagnosis. Equipment and engine details vary by version and production date.
Considering a particular car?
Get a Deep Report on the listing: relevant model risks, gaps in the advert and focused questions for the seller.