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:

    Through-loading system
    General information The cargo area can be enlarged by folding down the rear seat backrest. The rear seat backrest is divided into two parts at a ratio of 60 to 40. The sides can be folded down ...

    The concept
    Dynamic Drive reduces the lateral inclination of the vehicle that occurs during rapid driving in curves or during quick evasive maneuvers. Driving stability and driving comfort are increased un ...

    Programmable memory buttons
    General information The Owner's Manual can be stored on the programmable memory buttons and called up directly. Storing 1. Select "Owner's Manual" via the iDrive. 2. Press the desire ...