2008 BMW Z4 N52B30 (3.0L I6 petrol)/N54B30 (3.0L twin-turbo I6 petrol, introduced 2007 in some markets) (E85 (roadster), E86 (coupe))
E85 (roadster), E86 (coupe) / 2-door Roadster / 2-door Coupe / Global (notable variations in North America, Europe, and Asia markets)
N52B30 (3.0L I6 petrol)N54B30 (3.0L twin-turbo I6 petrol, introduced 2007 in some markets)M57D30 (3.0L I6 turbo-diesel, available mainly in Europe and selected markets)Fiche exacte année/versionGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Valve cover gasket leaks (N52 engine)
- Discharge pipe cracking (N54 engine)
- Window regulator failures
- Convertible top hydraulic system issues (roadster)
First checks
- Engine oil level and quality
- Cooling system pressure test
- Transmission operation and fluid levels
- Condition and operation of convertible top (E85 Roadster)
- Suspension and steering play
Avant de remplacer des pièces
- Save fault codes and freeze-frame data before clearing anything.
- Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
- Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.
Important notes
- 2008 Z4 represents the first generation E85/E86 facelift with revised styling, new engines introduced including the N54 twin turbo.
- Engine availability and equipment vary by market; diesel is limited to European markets.
- Oil capacity listed includes service fill with filter replacement; always confirm exact specifications by VIN and market.