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:

    Range
    After the reserve range is reached: A Check Control message is displayed briefly. The remaining range is shown on the computer. When a dynamic driving style is used, such as when ...

    Opening/closing the glass sunroof automatically
    Press the switch beyond the resistance point. The following movements are also automatic: ▷ Pressing the switch with the sunroof open: the sunroof is tilted fully. ▷ Pressing the switc ...

    Tire inflation pressure values over 100 mph/160 km/h
    740i, 740Li, 750i, 750Li Without high-speed tuning feature 760i, 760Li Without high-speed tuning feature With high-speed tuning feature 750i xDrive, 750Li xDrive Without high-speed tun ...