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:

    Engaging transmission position
    ▷ Transmission position P can only be disengaged if the engine is running and the brake pedal is pressed. ▷ With the vehicle stationary, press on the brake pedal before shifting out ...

    Service requirements
    The remaining driving distance and the date of the next scheduled service are displayed briefly immediately after you start the engine or switch on the ignition. The extent of service work requi ...

    Cruise control
    The conceptYou can use the cruise control feature beginning at approx. 20 mph/30 km/h. The car then stores and maintains the speed that you specify using the lever on the steering column. Do not ...