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:
Cargo
The trunk measures 14 cubic feet, which makes it similar in size to the Audi
A8's (14.6) but smaller than the Jaguar XJ's (16.4), LS 460's (18) and S-Class'
(16.3). It's quite deep and rectangular ...
Initializing after a power failure
After a power failure during the opening or closing
process, the roof can only be operated to a
limited extent.
Initializing the system
The system can be initialized when the vehicle
is stationar ...
Display on the Control Display
Activating/deactivating systems
System status
Gray: the system is not activated.
Parking space search.
Blue: the system is activated. A
suitable parking space was
found.
The parking p ...