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:

    Switching the system on/off
    Press the left or right side of the button on the CD/DVD player in the rear for the respective page. Rear entertainment and screens are switched on/off. After switching off the ignition, ...

    Actions in the event of a flat tire
    Run-flat tires You can continue driving with a damaged tire at speeds up to 50 mph/80 km/h. Do not continue driving without run-flat tires If the vehicle is not equipped with run-flat tires ...

    What to do if...
    Information on suitable mobile phones Appointments, tasks, notes, text messages, or e-mails from the mobile phone are not displayed. ▷ The mobile phone is not capable of the missing functi ...