See also:

Energy recovery
The energy of motion of the vehicle is converted to electrical energy while coasting. The vehicle battery is partially charged and fuel consumption can be lowered. Odometer and trip odomete ...

Leather care
Remove dust from the leather often, using a cloth or vacuum cleaner. Otherwise, particles of dust and road grime chafe in pores and folds, and lead to increased wear and premature degradation o ...

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 ...