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.

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    Functional requirements
    The system must have been reset while the inflation pressure was correct; otherwise, reliable signaling of a flat tire is not ensured. Always use wheels with TPM electronics to ensure that the ...

    Manual transmission
    Starting the engine 1. Depress the brake pedal. 2. Press on the clutch and shift to neutral. 3. Press the Start/Stop button. The ignition is activated automatically for a certain time and is sto ...

    Interior motion sensor
    The windows and glass sunroof must be closed for the system to function properly. ...