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:
Executing functions using short commands
Functions on the main menu can be performed
directly by means of short commands, nearly irrespective of which menu item is
currently selected,
e.g., ›Vehicle status‹.
List of short commands of ...
Replacing the battery
1. Take the integrated key out of the remote
control.
2. Push in the catch with the key, arrow 1.
3. Remove the cover of the battery compartment;
see arrow 2.
4. Insert a battery of the same ty ...
Notes
> Reception may not be available in some situations, such as under certain environmental
or topographic conditions. The satellite radio cannot influence this.
> The signal may not be availabl ...