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:

    Route criteria
    General information The route calculated can be influenced by selecting certain criteria. The route criteria can be changed when the destination is entered and during destination guidan ...

    Continuing destination guidance
    If the destination was not reached during the last trip, destination guidance can be resumed. "Resume guidance" ...

    Windows
    To prevent injuries, watch the windows while closing them. Take the remote control out of the ignition when you leave the car; otherwise, children could operate the electric windows and possibly ...