Mercedes-Benz S-Class W108/W109 300 (2996 cc)
Model overview
A model overview is not available for this generation yet.
Engine overview · 3.0L 6-cyl PETROL
A smooth, durable classic Mercedes-Benz six-cylinder, but today’s ownership experience depends heavily on cooling, fuel-system and age-related maintenance.
Pros
- Refined inline-six character.
- Strong period engineering.
Cons
- Age-related maintenance can be substantial.
- Fuel-system condition strongly affects running quality.
- Specialist parts and servicing may be required.
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- Cooling-system deteriorationHigh
- Mechanical fuel-injection adjustmentMedium
- Timing-chain and valve-train wearHigh
- Engine oil leaks and sealing wearMedium
Maintenance
Follow the vehicle manual and engine-specific specialist guidance for fluids, valve-train checks, cooling-system care and fuel-injection servicing.
These are general ownership concerns, not a diagnosis. Equipment and engine details vary by version and production date.
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