Covetthesun:
Mileage changes so much with driving conditions that numbers posted here are often difficult to believe. A new v8 half ton truck driven across the country empty at posted speed limits will average around 18 to 20 mph. Some legs will be better, but winds, inclines and traffic will keep the average lower than expected This will be the case with a Ford, Ram or GM. At the same time a Tahoe or Expedition will be about the same, perhaps a bit less. A three row seat SUV, traverse or Explorer may get you as much as 23 or 24 for the same trip, but may prove to be less useful for various duties.