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:

    At a glance
    In entering your destination you can select from the following options: ▷ Enter the destination manually, see below. ▷ Select the destination from the address book. ▷ Last des ...

    USB audio interface/mobile phoneaudio interface
    At a glance It is possible to connect external audio devices. Operation can be performed via iDrive. The sound is output on the vehicle loudspeakers. Connectors for external devices ► Con ...

    Storing a station
    1. "Radio" 2. "FM" or "AM" 3. Highlight the desired station. 4. Press the controller for an extended period. 5. Select the desired memory location. The stations ar ...