See also:

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 ...

Current fuel consumption
Current fuel consumption Displays the current fuel consumption. You can check whether you are currently driving in an efficient and environmentally-friendly manner. ...

Fuel gauge
The vehicle inclination may cause the display to vary. Notes on refueling, refer to page 234. ...