BMW 5 Series E12 520
Model overview
The E12 5 Series is a rewarding classic executive sedan with straightforward rear-wheel-drive engineering, but age, corrosion and specification differences dominate ownership risk. Individual condition is more important than the model’s original reputation.
Pros
- Balanced classic BMW driving character.
- Comfortable and practical sedan body.
- Broad four- and six-cylinder petrol range.
Cons
- Corrosion can be serious and structurally important.
- Electrical, trim and interior parts are age-sensitive.
- Equipment and engine details vary by year and market.
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- Structural and body corrosionHigh
- Age-related electrical and instrument faultsMedium
- Cooling-system and hose ageingHigh
- Suspension, steering and brake wearHigh
Maintenance
Service by engine code and build date, with particular attention to corrosion, cooling components, brake hydraulics, suspension joints and age-related rubber parts.
Engine overview · 2.0L 6-cyl PETROL
A characterful older BMW six-cylinder petrol engine, but this catalogue group may span different E12 variants. Engine identity, cooling-system condition and age-related fuel or ignition wear matter more than the listed specification.
Pros
- Smooth period six-cylinder character
- Accessible conventional mechanical layout
Cons
- Very old components and seals
- Variant specification needs confirmation
- Cooling and fuel-system condition are important
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- Engine identity and specification variationMedium
- Age-related cooling-system deteriorationHigh
- Carburettor and ignition wear on applicable versionsMedium
- M20 timing-belt service historyHigh
Maintenance
Follow the confirmed M20 engine schedule, including timing-belt requirements, oil specification and cooling-system care.
These are general ownership concerns, not a diagnosis. Equipment and engine details vary by version and production date.
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