15.5 mpg on the first tank. -no load, hibernating until march. -50% short trips, cold weather. truck barely warmed up before turning off. -25% cruise at 65mph -25%cruise at 80mph. -my 1992 acura legend got 15mpg with the above mentioned driving pattern. -1994 accord got 17mpg. -don't have a direct comparison with the F150 for this exact pattern, however, best ever on it, lightly loaded and majority highway at 60-65 mph + drafting was 15.5mpg.