Hi folks, I've been driving my '06 FEH for a few months now, and something I'm noticing is that the on-screen MPG indicator is nearly always higher than the actual.

My latest tank *looked* great - 34.6 MPG on the display, but I was rather disappointed to see a calculated 31.9 MPG when I did the math based on mileage and actual gallons. This difference has always been there, but for the latest tank (and my current one also) it appears to be even larger.

I'm starting to think I should enter my mileage data based on on-screen MPG instead of the actual mileage/gallons - I'd be further up the list.

Does anyone have any hypotheses on why there's a difference between the on-screen and calculated MPG?