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BMW i8

The carbon-tubbed plug-in hybrid, and its layout is unlike anything else BMW has built: a 1.5 turbo three-cylinder driving the rear wheels through a six-speed automatic, and an electric motor driving the front wheels through a two-speed unit, with no mechanical connection between the two ends. So a complaint of lost drive can be either half, front and rear are entirely separate systems, and the road-speed signals the two controllers compare are all that ties them together. The engine itself is the same B38 family as a Mini Cooper's.

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BMW i8, front view
茅野ふたば · CC BY-SA 4.0 (external)

Generations

  • I12 and I15 2014–2020

    Petrol at the back, electric at the front, no mechanical link between them — two independent drive systems that agree only through their speed signals.

    Body styles
    Coupé · Roadster
    Platform
    BMW LifeDrive
    Engines
    • 1.5 turbo three-cylinder — B38 · plug-in hybrid · 266–275 kW (357–369 hp) combined · 570 Nm (420 lb-ft) combined · rear wheels through a six-speed automatic; the front axle is electric only
    Transmissions
    6-speed automatic · 2-speed reduction
    Drivetrain
    Four-wheel drive

Service information

Information, not instruction

CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.

Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.

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