My FX4 5.0, got 18.9 between Houston and Dallas. Since I'm back in town, I'm averaging 15.7. That could be a little better I guess. This next week, I'm going to drive more conservatively and see if I can improve that but I'm pleased with it really. I also just discovered the fuel used counter on the dash. I will reset it and give a total range after using the tank capacity.

 

forgot to add, it's a supercrew