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
    Displaying notes 1. "Office" 2. "Notes" All notes are displayed. Displaying the note 1. Select the desired note. 2. Scroll in the note if necessary: ► Turn the c ...

    System limits
    Personal responsibility The system cannot serve as a substitute for the driver's personal judgment of the course of the road and the traffic situation. In the event of a warning, do not jerk th ...

    Tail lamps
    ▷ Turn signal, backup lamp: 21-watt bulb, H21W. ▷ Brake lamp, brake force display: 21-watt bulb, P21W ▷ Tail lamp: LED technology. Contact your service center in the event of ...