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:

    Exterior mirrors
    At a glance 1 Adjusting 2 Left/right, Automatic Curb Monitor 3 Fold in and out General information The mirror on the passenger side is more curved than the driver's side mirror Estimating d ...

    Displaying contacts
    General information 1. "Office" 2. "Contacts" All contacts are listed in alphabetical order. Depending on the number of contacts, an A-Z search is offered. A symbol ind ...

    Pinch protection
    If the closing force exceeds a specific value as a window closes, the closing action is interrupted. The window reopens slightly. Danger of pinching even with pinch protection Even with the pi ...