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:

    Arrow view
    The following information is displayed during destination guidance: ▷ Large arrow: indicates the current direction of travel. ▷ Small arrow: indicates the next change in direction. ...

    Chassis and suspension tuning
    Two chassis and suspension tunings are available for selection. ▷ Normal: The comfortable basic setting offers optimum comfort when traveling. ▷ Sport: The sporty basic setting off ...

    Roadside Assistance
    At a glance BMW Roadside Assistance can be contacted if assistance is needed in the event of a breakdown. Roadside Assistance can also be contacted via a Check Control message ...