Keep in mind you're probably not thinking of the wind. I live in Fargo and make the drive to Minneapolis multiple times a month and get major fluctuating MPG because of the wind. Headwind, tailwind, crosswinds all really affect us. I've driven West on i94 towards Bismarck and can be getting 26-28mpg based off the computer and then on the reverse drive I've seen it drop down to 20 mpg or less. Drive this pickup into 25-45 mph winds will kill MPGsWe just wrapped a 1050mile each way trip (Fargo ND to Flathead MT); entire trip was about 2500miles. Pushed the pickup hard (our average including stopped time was 75.1mph for the out and back portion of the trip).
Pickup had 3 adults plus the entire box filled (a full monster yeti cooler / 4 extra cases of beverages / bbq grill / suitcases / etc) ~500lbs of total gear plus people so the pickup was fully loaded and on the timbrens.
BF AT Ko2's as the tires.
With all of that the pickup eeked out a 22.8mpg average at the pump for the trip; I was totally satisfied with that, very happy. (but no 30 )