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:

    Upholstery material care
    Vacuum regularly with a vacuum cleaner. If they are very dirty, e.g., beverage stains, use a soft sponge or microfiber cloth with a suitable interior cleaner. Clean the upholstery down to the se ...

    Ventilation in the rear
    Ventilation in the rear ▷ Thumbwheel for opening and closing the vents continuously, arrow 1. ▷ Thumbwheel to vary the temperature, arrow 2. Toward blue: colder. Toward red: warm ...

    Compartments in the doors
    Do not stow any breakable objects Do not store any breakable objects, e. g. glass bottles, in the compartments, or there is an increased risk of injury in the event of an accident.◄ ...