Never measured the mpg but have been meaning to out of sheer curiosity. I doubt it's a huge difference; maybe just enough to give BMW their mpg numbers for advertisement.
Originally Posted by solstice
Have any of you who uses this function gotten a good idea of your fuel savings over a longer period? Is it more than 1 mpg? I'm not interrested in details as how many stop lights, distance etc. just your mpg with it on vs. off if you have measured both. Both our cars have it ( 2011 M3 and 2013 Cayenne ) but both are set to permanently off since neither of us like the sensation of the engine shutting off and on.
I didn't know M series BMWs had ASS; my X5M doesn't have it so I figured it wouldn't even be an option on any M's???
2013 BMW X5///M
2012 BMW 535i M Sport
2008 Chevy Trailblazer SS (Sale pending)
1971 Buick Skylark