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:
Cooling function
The passenger compartment can only be
cooled with the engine running.
Press the button.
The air is cooled and dehumidified and
– depending on the temperature setting –
warmed again.
The cool ...
General driving notes
Close the trunk lid Only drive with the trunk closed. Failure to
do so may endanger passengers or other road users or may damage the vehicle in the
event of an accident or a braking and evasive ma ...
Volume
► "Speed volume": speed-dependent volume
control.
► "PDC": volume of the PDC signal compared
to the entertainment sound output.
► "Gong": volume of ...