See also:

Active head restraint
In the event of a rear-end collision with a certain severity, the active head restraint automatically reduces the distance from the head. Reduced protective function ▷ Do not use seat or ...

Safety
Both the coupe and convertible have front airbags plus side-impact airbags built into the front seats. As required of all 2012 models sold in the U.S., the 640i has standard antilock brakes and an ...

Weights
The values preceding the slash apply to vehicles with manual transmission; the values following the slash apply to vehicles with automatic transmission. ...