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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    Notes
    CD/DVD player and changer Do not remove the cover BMW CD/DVD players and changers are officially designated Class 1 laser products. Do not operate if the cover is damaged; otherwise, severe e ...

    Illuminated vanity mirror* in the rear
    Folding down Press the button. The vanity mirror folds down. The angle can be adjusted by hand. Folding up Press the mirror up. ...

    Activating
    Switch position with the ignition switched on. The turning lamps are automatically switched on depending on the steering angle or the use of turn signals. To avoid blinding oncoming traffic ...