I would say that this is pretty good considering that the wife had the truck for about 2 of the Days that these miles were driven. I had 328 miles on the tank !! I'm use to the 660 miles that a full tank would yield in the Cummins/Ram! But the wallet dosent hurt as bad with only 21 gallons! So what does this look like to all the expert Taco owners???? I think that in a couple thousand miles it will get the 19+ that I was expecting! I hope! JB Oh and what kind of mileage loss will I see when I go to the 265/75/16 BFG TA/KO Tires that will be on the Blue Beast this weekend???