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:
Initializing
In rare cases, it may become necessary to initialize
the Integral Active Steering.
The warning lamp lights up. A Check
Control message is displayed.
1. With the engine running, turn the steeri ...
Close the windows and glasssunroof
Driving with the glass sunroof and windows
open results in increased air resistance and
raises fuel consumption. ...
Head restraints
Correctly adjusted head restraintA correctly adjusted head restraint reduces the risk of neck injury in the event
of an accident.
Adjust the head restraint in such a way that
its center is at ap ...