BMW 730 1991
Analysis of 9 active listings for BMW 730 1991 from mobile.bg, cars.bg and other sources. Real market prices, known engine issues and what to check before buying.
Petrol 9
📊 Market data
- Cheap listings6 930 €
- Typical price12 000 €
- Expensive listings14 199 €
- Average mileage199 543 км
⚙️ Engines — what to expect
BMW M57 3.0 inline-6 diesel — M57
Known issues
- Plastic swirl flaps can break — especially M57TU2. Delete is common preventive fix. (~200–1 200 € repair)
- Copper injector sealing rings leak combustion gases — carbon buildup around injectors. Easy fix. (~100–300 € repair)
- Variable vane turbo can stick or wear — loss of boost. (~400–1 200 € repair)
- EGR cooler can crack internally, causing coolant loss and white smoke. (~400–1 000 € repair)
- Later M57 variants with DPF can clog on short trips. (~500–1 200 € repair)
BMW N57 inline-6 diesel — N57
Known issues
- Intake swirl flaps can crack and get ingested into engine — catastrophic if it happens. Delete or replace with upgraded units. (~300–5 000 € repair)
- Bi-turbo N57S/N57D30T1 models — VTG actuator on small turbo can fail. Causes limp mode. (~500–1 500 € repair)
- City driving clogs the DPF, especially on short trips. Forced regeneration or replacement may be needed. (~500–1 200 € repair)
- EGR cooler can develop internal leak. Causes coolant loss and white smoke. (~500–1 200 € repair)
- Injectors can develop leak-back at higher mileage, causing hard starts. (~600–1 500 € repair)
🚨 What to check before buying
Overall risk score: 9/10
Serious risks
- Swirl flap failure: Plastic swirl flaps can break — especially M57TU2. Delete is common preventive fix.
- Injector sealing rings: Copper injector sealing rings leak combustion gases — carbon buildup around injectors. Easy fix.
- Turbo vane wear: Variable vane turbo can stick or wear — loss of boost.
- EGR cooler leak: EGR cooler can crack internally, causing coolant loss and white smoke.
- DPF clogging (later models): Later M57 variants with DPF can clog on short trips.
- Car is 35 years old — expect age-related wear: rubber seals, bushings, water pump, AC compressor
Additional notes
- Vehicle is 15+ years old. Age-related issues: rubber seals/hoses degrade, electrical connectors corrode, suspension bushings wear. Not specific to any engine, but expect €500-1,500/year in age-related maintenance beyond normal service items.
- Vehicle is 15+ years old. Age-related issues: rubber seals/hoses degrade, electrical connectors corrode, suspension bushings wear. Not specific to any engine, but expect €500-1,500/year in age-related maintenance beyond normal service items.
- BMW 530d is extremely popular in Bulgaria (1500+ listings). N57 at 200k+ km: timing chain, swirl flaps, DPF, and EGR are all wear items. ZF 8HP gearbox needs fluid change.
🔥 Current market offers
5 cheapest active listings for BMW 730 1991. Click "Analyze" for a full report with market valuation, risk analysis and photo analysis.
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