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:

    Controls
    This chapter is intended to provide you with information that will give you complete control of your vehicle. All features and accessories that are useful for driving and your safety, comfort an ...

    Automatic tailgate operation
    Adjusting opening height You can set how far the tailgate should open. Adjusting the opening height When adjusting the opening height, ensure that there is a clearance of at least 4 in/ 10 cm ...

    Display
    Information stage The dimmed lamp in the mirror housing indicates when there are vehicles in the blind spot or approaching from behind. Warning If the turn signal is set while a vehicle is in ...