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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    Controls
    1 Change entertainment sources 2 Change station/track 3 Programmable memory buttons 4 Volume, on/off 5 Change wave band ...

    Saying commands
    Activating voice activation system1.  Press the button on the steering wheel. 2.  Wait for the acoustic signal. 3.  Say the command.   This symbol on the Control Display and ...

    Features
    The 535i xDrive starts at $55,800 and comes with a fair amount of standard features, like a panoramic moonroof, xenon headlights and rain-sensing windshield wipers. As with most BMWs, though, it's ...