I wanted to start a slightly different angle on the mpg debate.
BTW, I get about 27.5 in mixed city/hwy driving with my 2008 is250.
What I want to discuss is the discrepancy between what the computer thinks I'm getting for the current tank and what I calculator says I'm getting. I've found the calculated mileage to be anywhere from 1-3 mpg different (the calculated figure is always lower). Anyone else doublecheck the Lexus math?