So I tried something new about two weeks ago, I drive around using the trip meter only, makes me really try hard at getting good MPG. Watching how far I have gone since the last fuel up.
On the Yaris the bars disappear one at a time, today it was really starting to get up there and the top bar was still lit!! (last tank at 42.7mpg the top bar went out at 62)
I got my phone out and snapped this picture (sorry for the reflection)
FYI: the top bar went out at 77.7 - needless to say I am feeling pretty lucky