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:
Changing the map section
"Interactive map"
▷ To shift the map: move the controller in the
required direction.
▷ To shift the map diagonally: move the controller
in the required direction and turn ...
The concept
The DTC system is a version of the DSC in which
forward momentum is optimized.
The system ensures maximum forward momentum
on special road conditions, e.g., unplowed
snowy roads, but driving st ...
Switching on/off and interrupting
cruise control
Switching on
Press the button on the steering
wheel.
The indicator lamps in the instrument cluster
light up and the mark in the speedometer is set
to the current speed.
Cruise control can be ...
