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:
Convertible: rollover protection system
The rollover protection system is activated automatically in the event of an
accident, a critical driving situation, an extreme tilt in the car's longitudinal
axis or upon loss of ground conta ...
Battery replacement
Use approved vehicle batteries
Only use vehicle batteries that have been
approved for your vehicle by the manufacturer;
otherwise, the vehicle could be damaged and
systems or functions may no ...
Supplementary text messages
Addition information, such as on the cause of a
fault or the required action, can be called up via
Check Control. The supplementary text of urgent
messages is displayed automatically.
It is sh ...