On my all down hill trip from tahoe to reno NV (all coasting on highway 50) my dash said 76 mpg. It's a really curvy semi steep 10 miles. I was just meesing around to see how high I could get it to read. I'm sure it would have been higher but I'm guessing this is what the dash gauge tops out at? My commute is stop and go and I average 22-23.