See also:

Xenon headlamps
Because of the long life of these bulbs, the likelihood of failure is very low. Switching the lamps on and off frequently shortens their life. If a bulb fails, switch on the front fog lamps and ...

Self-leveling suspension
The concept The self-leveling suspension keeps the vehicle height and ground clearance constant. The height of the vehicle at the rear axle is maintained at a predefined level under all load co ...

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 ...