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:

    X3 in the Market
    At $38,000, the X3 starts substantially higher than its nearest competitor, the Acura RDX. Save for its problematic transmission behavior, the BMW offers a more buttoned-down driving experience th ...

    Components of the integrated Owner'sManual
    The integrated Owner's Manual consists of three parts, which offer various levels of information or access possibilities. Quick Reference Guide Located in the Quick Reference is important inform ...

    Additional functions
    General information Activate the functions before pairing to be able to use them in the vehicle. Information on suitable mobile phones, that support these functions. Additional telephone A mo ...