See also:

General driving notes
Closing the trunk lid Drive with the trunk lid closed Only drive with the tailgate closed; otherwise, in the event of an accident or braking or evasive maneuvers, passengers or other road use ...

Adaptive brake assistant
In combination with the Active Cruise Control, this system ensures that the brakes respond even more rapidly when braking in critical situations. Refer also to Collision warning ...

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 an ...