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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 an ...

Volume
"Speed volume": speed-dependent volume control. "PDC": volume of the PDC signal* compared to the entertainment sound output. "Gong": volume of the signal, su ...

Controls
Buttons at a glance 1 System on/off, interrupt 2 Resume speed 3 Store speed* 4 Store, maintain/change speed Switching on Press the button on the steering wheel. The marking in the speedom ...