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.

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    Car washes
    Notes Steam jets or high-pressure washers When using steam jets or high-pressure washers, hold them a sufficient distance away and use a maximum temperature of 140 ℉/ 60 ℃. Holdi ...

    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 ...

    Releasing
    With the ignition switched on: Automatic transmission: Press the switch while the brake is pressed or transmission position P is engaged. The LED and indicator lamp go out. The parking bra ...