Comfort position
In the comfort position, the roof is not fully open.
This reduces wind noise in the passenger compartment.
Each time the glass sunroof is opened or closed all the way, it stops in the comfort position. If desired, continue the motion following this with the switch.
See also:
Bursts of Power
The 1M's powertrain is the car's high point, providing ample torque at low
engine speeds for a satisfying launch. This twin-turbocharged 3.0-liter
inline-six-cylinder produces 335 horsepower at 5, ...
Engine data
...
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 ...
