Under the Hood

The 640i is powered by a 315-horsepower, turbocharged 3.0-liter six-cylinder engine. Its peak torque rating is 332 pounds-feet. BMW cites a zero to 60 mph time of 5.5 seconds for both the coupe and convertible. The standard eight-speed automatic transmission includes steering-wheel-mounted shift paddles.

Other standard features include computer-controlled adaptive shock absorbers and Driving Dynamics Control, which allows the driver to adjust the ride quality, accelerator response, power-steering assist level and automatic transmission behavior.

Optional mechanical upgrades include active stabilizer bars and active steering, the latter of which adds rear-wheel steering to the earlier generation's variable-ratio front steering system.

    See also:

    Top View
    The concept Top View assists you in parking and maneuvering. The area around the doors and the road area around the vehicle are shown on the Control Display for this purpose. ...

    Night Vision with pedestrian detection
    The concept Night Vision with pedestrian detection is a night vision system. An infrared camera records the area in front of the vehicle and displays the image on the Control Display. The pic ...

    Activating the High-beam Assistant
    1. Turn the light switch to or . 2. Press the button on the turn signal lever, arrow. The indicator lamp in the instrument cluster lights up. When the lights are switched on, the high be ...