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:

    Run-flat tires
    Label RSC label on the tire sidewall. The wheels are composed of special rims and tires that are self-supporting, to a limited degree. The support of the sidewall allows the tire to remain dr ...

    Maintaining/storing the speed
    Press the button. or: Press the rocker switch while the system is interrupted. When the system is switched on, the current speed is maintained and stored as the desired speed. It is d ...

    Text messages
    Text messages in combination with a symbol in the instrument cluster explain a Check Control message and the meaning of the indicator and warning lamps. ...