Mercedes-Benz S-Class W116 450 (6834 cc)
Model overview
The W116 S-Class can provide durable, comfortable classic-car ownership, but condition matters greatly. Rust, ageing suspension and brakes, electrical equipment and engine-specific fuel-system maintenance deserve close attention across this mixed 1972–1980 range.
Pros
- Comfortable, substantial classic luxury sedan
- Strong long-distance manners
- Wide petrol and diesel engine choice
Cons
- Rust repair can be extensive
- Period electrical and climate equipment is complex
- Running costs vary considerably by engine and specification
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- Structural and body corrosionHigh
- Ageing suspension, steering and braking hydraulicsHigh
- Electrical and climate-control faultsMedium
Maintenance
Follow the exact engine and market manual, with particular attention to fluids, belts, hoses, brake components, fuel systems and age-sensitive rubber.
Engine overview · 6.8L 8-cyl PETROL
A powerful, complex period V8 sedan whose ownership experience depends strongly on specialist maintenance and preservation. Condition, corrosion and hydraulic-system history matter more than the original specification alone.
Pros
- Refined, powerful M100 V8
- Exceptional period comfort
- Substantial construction
Cons
- Complex hydraulic and fuel systems
- Age-related leaks and corrosion
- Specialist servicing may be necessary
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- Hydraulic suspension and braking system conditionHigh
- M100 V8 oil leaks and timing-chain serviceHigh
- Mechanical fuel-injection system conditionMedium
- Cooling system and engine-compartment heatHigh
Maintenance
Follow the vehicle-specific Mercedes-Benz service literature and use a specialist familiar with the 450 SEL 6.9, particularly for hydraulic, fuel-injection and timing-chain work.
These are general ownership concerns, not a diagnosis. Equipment and engine details vary by version and production date.
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