BMW M42016

• **Explosive performance, but running costs and repairs bite hard.** 425 hp twin-turbo engine is thrilling; fuel economy ~10 L/100km and premium unleaded mandatory mean serious ongoing cost.
• **Mileage sits below average for a 10-year-old**—verify service history and ownership chain carefully; gaps or private sales raise questions about maintenance discipline on a high-stress engine.
• **Turbo wastegate rattle and premature turbo failure are common**; carbon build-up on injectors causes rough running; fuel pump relay weaknesses trigger starting faults. Budget €2,500–€4,000 for turbo work alone.
• **Before purchase, have a trusted mechanic pressure-test the fuel system and listen for turbo rattle on cold start and under load.** Turbo failure risk justifies a pre-buy inspection.
• **NI import saves €3,856 before VRT**, but VRT, NOx levy, and registration costs will narrow or erase that saving; factor full landed cost before committing.

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