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:

    Operating from the inside
    Via the button for the central locking system. If the vehicle has been locked from inside, the fuel filler flap remains unlocked. If an accident of a certain severity occurs, the central loc ...

    Jacking points for the vehicle jack
    Jacking points for the vehicle jack The jacking points for the vehicle jack are located in the positions shown. ...

    Hiding Check Control messages
    Press the computer button on the turn signal lever. ▷ Some Check Control messages are displayed continuously and are not cleared until the malfunction is eliminated. If several malfun ...