[JOHNBMWM5]

Originally Posted by rsyed

25/30 mpg is very optimistic for a 550i.

check out this guy: http://www.spritmonitor.de/de/detailansicht/387821.html

he is averagin something like 20mpg, the best he managed was 24....

I get 23/24MPG from the E90 2010 M3, so with 8 speeds and 80MPH @ 1800 rpm, on a cruise it should be doable easy, hard driving well no chance.
PS) can't understand a word of the link!!!!!!!!!