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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    Malfunctions
    Steering wheel vibration Frequent activation of the steering wheel vibration causes the system to overheat. This causes Active Blind Spot Detection to become deactivated. Let the system cool an ...

    Resetting the system
    Reset the system after each correction of the tire inflation pressure and after every tire or wheel change. 1. "Vehicle Info" 2. "Vehicle status" 3. "Reset" 4. S ...

    Fuel cap
    The indicator lamp lights up. If the fuel cap is not properly tightened, the OBD system may conclude that fuel vapor is escaping. If the cap is then tightened, the display should go out in a ...