Twin-scroll turbocharging

BMW 3 Series / Overview / 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:

    Short commands for the voice activation system
    For instructions on the voice activation system. Having the possible spoken commands read aloud: {Voice commands} The following short commands are for vehicles with the voice activation system. Th ...

    Pinch protection
    If the closing force exceeds a specific value as a window closes, the closing action is interrupted. The window reopens slightly. Danger of pinching even with pinch protection Even with the pi ...

    System limits
    Sudden tire damage Sudden serious tire damage caused by external influences cannot be indicated in advance. A natural, even pressure loss in all four tires cannot be detected. Therefore, check ...