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:

    At a glance
    ▷ Display the traffic bulletins from radio stations that broadcast the TI Traffic Information of a traffic information service. Information on traffic obstructions and hazards is updated ...

    Changing the scale
    1. Select the symbol. 2. To change the scale: turn the controller. Automatically scaled map scale In the map view facing north, turn the controller in any direction until the AUTO scale is displ ...

    Digital compass
    1.  Adjustment button 2.  Display The display shows you the main or secondary compass direction in which you are driving. Operating principleYou can call up various functions by press ...