Twin-scroll turbocharging

The new four-cylinder engines also feature twin-scroll turbocharging. This means that the exhaust stream from cylinders 1 and 4, and the exhaust stream from cylinders 2 and 3, follow separate spiral-shaped paths to the turbine wheel. This reduces exhaust back-pressure at low engine rpm, allowing the energy of the exhaust gas pulses to be utilised as efficiently as possible. The result is instant throttle response and fast-revving performance which BMW drivers can instantly translate into driving pleasure.

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    Cargo
    The trunk measures 14 cubic feet, which makes it similar in size to the Audi A8's (14.6) but smaller than the Jaguar XJ's (16.4), LS 460's (18) and S-Class' (16.3). It's quite deep and rectangular ...

    Initializing after a power failure
    After a power failure during the opening or closing process, the roof can only be operated to a limited extent. Initializing the system The system can be initialized when the vehicle is stationar ...

    Display on the Control Display
    Activating/deactivating systems System status Gray: the system is not activated. Parking space search. Blue: the system is activated. A suitable parking space was found. The parking p ...