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:

    Services status
    General information Check services status. Displaying available services Display of all services available in the vehicle. 1. "ConnectedDrive" 2. "Service Status" 3. "Av ...

    Audio/video playback
    Audio Audio can be played back via rear entertainment from any source in the vehicle. Operation is the same as for the front audio playback. Video Video can be played back in the rear from the ...

    System limits
    Personal judgment The system cannot serve as a substitute for the driver's personal judgment of the traffic situation. The system assists the driver and does not replace the human eye.◄ T ...