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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    Exterior
    Sharing its platform with the recently redesigned 7 Series, the 5 Series' wheelbase has been extended about 3 inches. It now leads its class, BMW says. Up front, the car's signature kidney grilles ...

    Temperature
    Turn the wheel to set the desired temperature. The automatic climate control achieves this temperature as quickly as possible, if necessary with the maximum cooling or heating capacity, and ...

    Maintaining/storing the speed
    Press the button. When the system is switched on, the current speed is maintained and stored as the desired speed. It is displayed in the speedometer and briefly displayed in the instrument c ...