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:

    Radio ready state
    Activate radio ready state: When the ignition is switched off: press ON/ OFF button on the radio. When the engine is running: press START/ STOP button. Some electronic systems/power con ...

    Switching the system on/off
    Press the left or right side of the button on the CD/DVD player in the rear for the respective page. Rear entertainment and screens are switched on/off. After switching off the ignition, th ...

    Starting destination guidance
    1.  "Navigation" 2.  Entering a destination. 3.  "Accept destination" 4.  "Start guidance" The route is displayed on the Control Display after it ...