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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    Connecting electrical devices
    Note Do not plug the charger into the socket Do not connect battery chargers to the factory-installed sockets in the vehicle. Doing so may result in damage to the vehicle.◄ Sockets Socket ...

    Capturing the image
    Two cameras integrated in the bumpers capture the image. The cameras capture a maximum range of 330 ft/100 m. Display The images from both cameras are shown simultaneously on the Control Disp ...

    Fuel cap
    Opening 1. Briefly press the rear edge of the fuel filler flap. 2. Turn the fuel cap counterclockwise. 3. Place the fuel cap in the bracket attached to the fuel filler flap. Closing 1. ...