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:

    Buckling the belt
    Make sure you hear the latch plate engage in the belt buckle. Tensioning the safety belt automatically After the belt is buckled and the door is closed, the belt is tightened once automatica ...

    Thigh support
    Pull the lever at the front of the seat and adjust the thigh support. ...

    Settings for the map view
    The settings are stored for the remote control currently in use. 1. "Navigation" 2. "Map" 3. Open "Options". 4. "Settings" Set the map view. "Da ...