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:
Switching off automatically
The system switches off and the LED goes out:
▷ After approx. 160 ft/50 m when driving forward.
▷ Above approx. 22 mph/36 km/h when driving
forward.
Switch on the system again if nece ...
Around the center console: controls and displays
1. Coupe: microphone for voice activation systemand for telephonein
hands-free mode
Convertible: microphone on steering column
2. SOS: initiating an Emergency Request call
3. ...
Engaging transmission position
▷ Transmission position P can only be disengaged
if the engine is running and the brake
pedal is pressed.
▷ With the vehicle stationary, press on the
brake pedal before shifting out ...
