I noticed that my 04's gauge moves rather fast for the first 1/4 to 1/3 of a tank. After that it slows down noticably. As far as actual milage, i can't say for sure, but judging by how much $ i've been putting in it weekly compared to my 2001 civic, it seems like it's getting close to the civic in milage. But then since it's been broken in i've been stomping it more and it eats gas a lot quicker. So i've lately been going back to driving like i did when it was broken in. I think one reason it seems to get milage almost as good as the civic is that the civic was so much slower that i was always having to stomp it just to drive normally. (normally for me at least) But with the accord i can drive the same way with a far lighter foot because it's got a lot more acceleration and power. Ot, but i was really suprised at how much faster the accord is than my civic considering it's only got 45 more HP and is a heavier car.