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:
Central locking system
The conceptThe central locking system functions when the driver's door is closed.
The system simultaneously engages and releases the locks on the following:
> Doors
> Trunk lid
> Fuel ...
Safety
Active head restraints, two-row side curtain airbags, front airbags and
side-impact airbags for the front seats are all standard. So is an electronic
stability system, antilock brakes and traction ...
Engine oil temperature
▷ Cold engine: the pointer is at
the low temperature end.
Drive at moderate engine and
vehicle speeds.
▷ Normal operating temperature:
the pointer is in the middle
or in the left ...