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
    Language on the Control DisplaySetting the language 1.  "Settings" 2.  "Language/Units" 3.  "Language:" 4.  Select the desired language. The se ...

    Wiper system
    1.  Switching on wipers 2.  Switching off wipers or brief wipe 3.  Activating/deactivating intermittent wipe or rain sensor 4.  Cleaning windshield and headlamps 5.  Set ...

    Integrated key
    Integrated key Press button 1 and pull out the key. The integrated key fits the following locks: ▷ Driver's door, refer ▷ Cargo floor cover in cargo area ...