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:

    Display on the Control Display
    Switching on the backup camera via iDrive With PDC activated: "Rear view camera" The backup camera image is displayed. The setting is stored for the remote control currently in use ...

    Controls
    Activating Switch position with the ignition switched on. The turning lamps are automatically switched on depending on the steering angle or the use of turn signals. To avoid blinding onco ...

    Closing
    Recessed grips in the interior trim of the trunk lid make it easier to pull down the lid. Danger of pinching Make sure that the closing path of the trunk lid is clear; otherwise, injuries may ...