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:

    Compact Design
    Just as BMW's compact 3 Series ranks below the midsize 5 Series, the five-seat X3 sits in the shadow of the larger X5. The styling clearly says BMW, but it's the multi-paneled look of earlier mode ...

    Filtering traffic bulletins
    You can set which traffic bulletins appear on the map. 1. "Navigation" 2. "Map" 3. Open "Options". 4. "Traffic Info categories" 5. Select the desired cat ...

    Displays in the instrument cluster
    Selected program The selected program is displayed in the tachometer. Program selection Pressing the button displays a list of the selectable programs. Display on the Control Display Pr ...