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:

    Requirements
    ▷ Equipment version with full preparation package mobile phone. An Emergency Request can be made, even if no mobile phones are paired with the vehicle. ▷ BMW Assist is activated. &# ...

    Notes
    The vehicle equipment does not include a spare tire. When using run-flat tires* or tire sealants, a tire does not need to be changed immediately in the event of pressure loss due to a flat tire ...

    Hands-free system
    General information Calls that are being made on the hands-free system can be continued on the mobile phone and vice versa. From the mobile phone to the handsfree system Calls that were begun ...