BMW 8 Series E31 850CSi
Model overview
A model overview is not available for this generation yet.
Engine overview · 5.6L 12-cyl PETROL
The E31 850CSi combines a naturally aspirated S70 V12 with a six-speed manual and rear-wheel drive. It is rewarding and highly engineered, but age, complexity and specialist maintenance requirements make documented condition essential.
Pros
- Smooth, distinctive naturally aspirated V12.
- Rare six-speed manual grand-tourer specification.
- Strong performance and refined long-distance character.
Cons
- Complex engine bay and difficult repair access.
- Specialist parts and expertise may be required.
- Condition varies substantially with age and history.
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- Aging cooling-system componentsHigh
- V12 timing-chain and tensioner wearHigh
- Engine oil and coolant leaksMedium
- Throttle-body and engine-management faultsMedium
Maintenance
Follow the S70B56-specific service schedule and use BMW-compatible fluids and parts; prioritise cooling-system condition, leak monitoring and specialist servicing.
These are general ownership concerns, not a diagnosis. Equipment and engine details vary by version and production date.
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