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:

    Washer fluid reservoir
    Adding washer fluid Only add washer fluid when the engine is cool, and then close the cover completely to avoid contact between the washer fluid and hot engine parts. Otherwise, there is ...

    Unpairing a device
    1. "Telephone" 2. "Bluetooth® (phone)" 3. Highlight the device that is to be unpaired. 4. Open "Options". 5. "Remove phone from list" Unpairing a device ...

    Status display
    The tire and system status is indicated by the color of the tires. A change in the tire inflation pressure during driving is taken into account. A correction is only necessary if this is indicat ...