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:

    Display
    Night Vision with pedestrian detection is not available on the rear screen*. Settings via iDrive With Night Vision switched on: 1. Activate Night Vision with pedestrian detection. 2. Press the c ...

    Supplementary text messages
    Addition information, such as on the cause of a fault or the required action, can be called up via Check Control. The supplementary text of urgent messages is displayed on the Control Display a ...

    Tow-starting, towing away
    Observe the applicable laws and regulations for tow-starting and towing vehicles. Do not transport any passengers other than the driver in a vehicle that is being towed. Using a tow fittingThe ...