Quote Originally Posted by ground hwg View Post
well it cant be worse than my daily driver now.

1999 Hummer H1 6.5 TD
40" Irock
2" suspension lift
diesel test pipe
Ummmmm, good point!

In reality, bone stock I got 22 MPG driving all highway, driver only.
But best guess ....the absolute best you can expect is "about" 19, with most I'd say around 15, some report 11 MPG. That's kinda the range with many having larger tires and/or rims, roof racks, baskets... Just some ballparks!

Some report better mileage with premium fuel, some don't.