ITTOG
Well-known member
Elevation improves mpg, and the hills reduce it. Jnich77 is from the part of NM where I live, and he's talking about non-freeways mostly, where the speeds are slower.
FYI according to Fuelly averages, the Tundra 5.7 gets ~14mpg, the 5.0 or 3.5TT F150 ~16mpg, and the 2.7TT F150 ~18.5mpg. If you drive a lot that 2.7TT could cover a lot of "sins" with fuel savings. I see little point to the 3.5TT honestly.
I went with the 3.5 for two reasons. First, and most importantly I am old school and still live by more displacement is better. Second, I wanted the towing capacity.The 3.5 is nice if you need the accompanying tow rating.... I don't need it, thus the 3.5 would have been a waste of money. The only upside the 3.5 would have for me is the potential to make more HP with aftermarket parts (there are some pretty large turbo upgrades for it)... But that takes things to a level that is waaaay above what I want/need in a daily driver...lol.
My dad and my brother both have the 3.5 and for them it works. For my dad it was the only motor available in the Navigator in 2015 and my brothers 2019 Limited F150 only comes with the 3.5 HO. They have zero complaints, but they do spend more on fuel than I ever will.
I sure thought elevation reduced mpg's and power. I guess you are assuming one doesn't smash the pedal more to make up for the loss in power??? But if you don't smash the pedal more, I can see how the mpg's would be better given the lower compression ratios, wind drag, etc.