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:
Lane departure warning
The concept
Starting at a specific speed, this system alerts
you when the vehicle on streets with lane markings
is about to leave the lane. Depending on the
country-specific version of the vehicle ...
Last destinations
At a glance
The destinations previously entered are stored
automatically.
The destinations can be called up and used as a
destination for destination guidance.
Calling up the last destination
...
Hands-free system
General information
Calls that are being made on the hands-free
system can be continued on the mobile phone
and vice versa.
From the mobile phone to the handsfree
system
Calls that were begun ou ...