Damn not having the adaptive lights!
I'm a diesel engineer by trade which is my main dislike to the ASS as I know what an engine requires. I don't think it helps with MPG but can lower the emmisions slightly on a test run to keep the 3L in the awesome tax bracket for the euronuts. It doesn't jar or anything, just annoys me. More so when you change drive modes and go into ECOPRO it always turns back on. From my driving position I can't see the little light either :/
So far, driving in manual is getting maybe 1 or 2 more MPG but hardly worthwhile. Just playing.