From Covington, VA to Chester, VA with the area behind the seat full of stuff and some stuff in the 3rd seat and three adults while doing the speed limit (most of the time) we got 17.8 mpg.
Man, I'm tickled pink. The Jeep Cherokee Sport we sold when we got this Expedition had the 4WD, 4.0 straight 6, 4 sp. OD automatic and a 3.55 gear in the differentials and we averaged around 16 mpg most of the time.
This Expedition has way more room, way more power and rides way better and gets better gas mileage most of the time.