Ok, so i drive about 20 miles each way to work, and 10 miles of that is freeway at 70mph or so.
My 93 Sidekick 4 door 16V with 2" OME and 2" body lift, with ARB bar, 30" MT's, and no roof rack gets me a consistent 23mpg tank after tank.
I've driven my wife's 95 Tracker 8V stock 2WD to work for the past few weeks and got my 2nd measurement today and it was 26.5mpg average.
So I thought i'd share this because even though it feels like i've increased my wind resistance a lot with the lift and bull bar on the front and everything, my MPG are still very reasonable. I was driving the 2WD just to conserve gas cause i though it got closer to 30mpg, but now i realise that the difference isn't that great.
The coolest thing about all this is that my 4-door is more comfortable to drive and the stereo is a helluva lot better than the 2-door, so it doesn't really matter which one i drive for the 3mpg difference.
BTW, my check engine light has always been on on my 4-door, so i figure if i ever fixed it, maybe my mpg would go down, so i'll be leaving it as is.