I burned a full tank of gas doing about 340 miles from LA to Phoenix (literally... I filled up the day before and the reserve light came on a couple miles before I arrived).
I could probably do much better but I have a compulsive need to do 85-90 on those long stretches of highway and floor the gas whenever I pass left-lane blockers on the right. But if I was a calm and responsible driver I wouldn't have sprung the extra 5k for the 335i.....
