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:

    Activating/deactivating the functions
    Several menu items are preceded by a checkbox. It indicates whether the function is activated or deactivated. Selecting the menu item activates or deactivates the function. The function is act ...

    Terminating destination guidance
    1. "Navigation" 2. "Map" 3. "Guidance" 4. "Stop guidance" ...

    Connecting a specific device
    If more than one device is detected by the vehicle, the device at the top of the list is connected. A different device can be connected by selecting it. 1. "Telephone" 2. "Bluet ...