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.

    See also:

    Fuses
    Notes Replacing fuses Never attempt to repair a blown fuse and do not replace a defective fuse with a substitute of another color or amperage rating; this could lead to a circuit overload, ul ...

    Switching off automatically
    System switches off: above approx. 9 mph/ 15 km/h. Switch on the system again if necessary. ...

    Easy entry/exit
    To facilitate entry and exit, the steering wheel temporarily moves into the uppermost position ...