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:

    Upholstery material care
    Vacuum regularly with a vacuum cleaner. If they are very dirty, e.g., beverage stains, use a soft sponge or microfiber cloth with a suitable interior cleaner. Clean the upholstery down to the se ...

    Switching on automatically
    With the engine running or the ignition switched on, shift the selector lever into position R. The image of the rear view camera is displayed when the system has been switched on using iDrive. ...

    Activating/deactivating Bluetooth
    Bluetooth is not permitted everywhere. Comply with all safety guidelines and regulations. 1. "Telephone" 2. Open "Options". 3. "Bluetooth®" Activating/deactivatin ...