1991 BMW 850i (E31)

Mid-range model with 5.0-liter M70 V12 engine.

Nikasil cylinder liner issues in early engines; Timing chain guide failures; Valley pan gasket leaks; Cooling system failures; Automatic transmission failures; Power steering leaks; Control arm bushings wear; Brittle interior plastics; Instrument cluster pixel failures; Window regulator failures; Electronic issues; Climate control issues; Very expensive maintenance; Fuel system issues; Electric issues with multiple ECUs; Pop-up headlight mechanism failures; Limited parts availability