BMW Z4 2011
Analysis of 64 active listings for BMW Z4 2011 from mobile.bg, cars.bg and other sources. Real market prices, known engine issues and what to check before buying.
Petrol 64
📊 Market data
- Cheap listings15 518 €
- Typical price21 395 €
- Expensive listings29 900 €
- Average mileage117 095 км
⚙️ Engines — what to expect
BMW N52 inline-6 NA petrol — N52
Known issues
- VANOS system components wear — rough idle, rattling on cold start, reduced power. Rebuild kits available for €200-500. (~200–600 € repair)
- Very common leak point. Oil drips onto alternator bracket. Easy to fix but messy if ignored. (~100–300 € repair)
- Electric water pump can fail without warning — leads to overheating. Replace preventatively around 80-100k km. (~300–600 € repair)
- Valve cover gasket hardens and leaks. Common age-related issue. (~150–400 € repair)
BMW N54 3.0 twin-turbo — N54
Known issues
- Wastegate actuators develop play — rattling under load. BMW updated design twice. Turbo replacement may be needed. (~500–3 000 € repair)
- HPFP failure is common — stalling, long cranking. BMW extended warranty on some. Can send metal debris into fuel system. (~600–1 500 € repair)
- Electric water pump and thermostat fail without warning — overheating risk. Preventive replacement advised at 80-100k km. (~400–900 € repair)
- Plastic charge pipe blows off under boost. Aftermarket aluminium replacement recommended. (~100–400 € repair)
- Direct injection leads to carbon deposits on intake valves. Walnut blasting restores performance. (~250–600 € repair)
BMW B58 inline-6 turbo petrol — B58
Known issues
- Very early B58 (2015-2017) had reports of coolant loss. Mostly resolved in later production. (~200–800 € repair)
- PCV diaphragm can harden, causing oil consumption and idle issues. (~200–600 € repair)
🚨 What to check before buying
Overall risk score: 10/10
Serious risks
- VANOS seals and solenoids: VANOS system components wear — rough idle, rattling on cold start, reduced power. Rebuild kits available for €200-500.
- Oil filter housing gasket leak: Very common leak point. Oil drips onto alternator bracket. Easy to fix but messy if ignored.
- Electric water pump failure: Electric water pump can fail without warning — leads to overheating. Replace preventatively around 80-100k km.
- Valve cover gasket leak: Valve cover gasket hardens and leaks. Common age-related issue.
- Car is 15 years old — expect age-related wear: rubber seals, bushings, water pump, AC compressor
Additional notes
- BMW N54 3.0 twin-turbo (335i, 535i, Z4 35i): legendary performance but known for: (1) Waste gate rattle — turbo actuators wear, causing rattling. BMW dealer fix is twin turbo replacement at €3,000-5,000. (2) High-pressure fuel pump failure — sudden loss of power. €500-1,000. (3) Fuel injector failure — coking and cracking. €200-400 each, 6 total. (4) Water pump/thermostat electronic failure — €400-800. The N55 single-turbo successor is more reliable.
- BMW N20 timing chain stretches after 80k km. Rattle on cold start is the first sign. If ignored, chain can jump timing causing engine damage. Replace chain preventively. Cost €1,000-2,500.
🔥 Current market offers
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