Some of you have mentioned seeing the mpg indicator break 40 mpg. Mine will do this towards the end of my 200 mile trip, but I normally see it in the high 30s. I find it a little strange that when I do that actual math of miles\gallons calculations that it always comes out at least 2-3 mpg higher than what the indicator says. I've even seen 5mpg differences. Anyone else notice this on their indicator?

2006 Toyota Avalon XLS, Blizard White Pearl, Sirius Radio. Car #75
1994 Chevy S10, Sirius Radio. Car #74