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:

    Warning triangle
    The warning triangle is located behind the lefthand cover in the cargo area. To remove, loosen the bracket. ...

    The concept
    The iDrive combines the functions of a multitude of switches. Thus, these functions can be operated from a central location. ...

    Roadside Assistance
    Service availability Roadside Assistance can be reached around the clock in many countries. You can obtain assistance there in the event of a vehicle breakdown. Roadside Assistance The Roadside ...