See also:

Correctly adjusted head restraint
A correctly adjusted head restraint reduces the risk of injury to cervical vertebrae in the event of an accident. Adjusting the head restraint Correctly adjust the head restraints of all occu ...

Avoid high engine speeds
Driving at a low engine speed reduces fuel consumption and minimizes wear. ...

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 ...