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:

    Tow fitting
    The screw-in tow fitting should always be carried in the vehicle. It can be screwed in at the front or rear of the BMW. It is located in the container on the inside of the trunk lid. Tow fit ...

    Signal tones
    When approaching an object, an intermittent tone is sounded that indicates the position of the object. For example, if an object is detected to the left rear of the vehicle, a signal tone sounds ...

    Display on the Control Display
    Activating/deactivating systems System status Gray: the system is not activated. Parking space search. Blue: the system is activated. A suitable parking space was found. The parking p ...