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:

    Short commands for the voice activation system
    For instructions on the voice activation system. Having the possible spoken commands read aloud: {Voice commands} The following short commands are for vehicles with the voice activation system. Th ...

    Programs
    The system offers two different programs. The programs can be selected via Dynamic Driving Control. SPORT Consistently sporty tuning of the Integral Active Steering for greater driving agility ...

    System limits
    Check the traffic situation as well Check the traffic situation around the vehicle with your own eyes. Otherwise, an accident could result from road users or objects located outside the pictur ...