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 electronic stability system. Active head restraints for the front seats are designed to prevent whiplash injuries. In the convertible, active roll bars hide under the rear deck to maximize visibility. If the car senses a sideways tip, the bars raise to provide rollover protection.

Optional safety features include blind spot and lane departure warning systems and night vision with pedestrian detection.

A backup camera is standard, and buyers can choose additional top- and side-view cameras for added protection when parking and creeping into intersections.

    See also:

    Parts and accessories
    For your own safety, use genuine parts and accessories approved by BMW. When you purchase accessories tested and approved by BMW and Genuine BMW Parts, you simultaneously acquire the assurance ...

    Adding engine oil
    Filler neck When the indicator lights up in the instrument cluster, add 1 US quart/liter of engine oil within the next 125 miles/200 km. Protect children Keep oil, grease, etc., out of reach o ...

    Displaying the button assignment
    Use a finger to touch the buttons. Do not wear gloves or use objects. The key assignment is displayed at the top edge of the screen. ▷ To display short information: touch the button. ...