See also:

Active seat ventilation, front
The seat cushion and backrest surfaces are cooled by means of integrated fans. The ventilation rapidly cools the seat, e. g., if the vehicle interior is overheated or for continuous cooling at ...

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 ...

Increasing or decreasing vehicle speed
You can specify your desired speed in the range from approx. 4 mph/6 km/h to approx. 15 mph/ 25 km/h using the rocker switch of the cruise control on the steering wheel. You can change the veh ...