Originally Posted by SamS
It defaults to Off, not something you have to be proud to avoid. It would be the same as saying you are glad you got a car without HD Radio capability.
Really? Not what I've experienced. It is set to be active by default and is overridden but the switch- the EPA tests by DEFAULT so BMW would make this on by default to get the best MPG, no sense in offering a technology that costs about $500 per unit with no EPA acknowledgment and yes it does work in the EPA test.