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:
External devices
At a glance
...
The concept
▷ The voice activation system can be used to
operate functions by means of spoken commands.
The system prompts you to make
your entries.
▷ Functions that can only be used when the
v ...
Notes
No loose objects in the passenger compartment
Do not stow any objects in the passenger compartment
without securing them; otherwise,
they may present a danger to occupants for instance
during bra ...