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 stages
    Prewarning This warning is issued, for example, when there is the impending danger of a collision or the distance to the vehicle ahead is too small. Acute warning with braking function Warning ...

    Front lamps, bulb replacement
    At a glance 1 Adaptive light control 2 Parking lamp, daytime running lights* 3 Low beams/high beams 4 Turn signal Xenon lamps Because of the long life of these bulbs, the likelihood of failu ...

    Switching on/off directly
    1. "Settings" 2. "Climate" 3. "Activate parked-car vent." The symbol on the automatic climate control flashes if the system is switched on. ...