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 on automatically
    Select transmission position R with the engine running. The backup camera image is displayed if the system was switched on via the iDrive. ...

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

    Front lamps, bulb replacement
    Halogen headlamps At a glance 1. High beams 2. Parking lamps 3. Low beams 4. Turn signal Parking lamps and roadside parking lamps, lateral turn signal lamp Follow the general instructions o ...