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:

    Bypassing a section of the route
    Calculate a new route for a route section. 1. "Navigation" 2. "Route information" 3. "New route for" 4. Turn the controller. Enter the number of miles within whi ...

    Control Display
    Notes To clean the Control Display, follow the care instructions. Do not place objects close to the Control Display; otherwise, the Control Display can be damaged. Switching off 1. ...

    Malfunction of the automatic deactivation system
    When transporting older children and adults, the front passenger airbags may be deactivated in certain sitting positions. In this case, the indicator lamp for the front passenger airbags lights ...