I went from 14.9mpg to 16.1 in a week driving about an 18mile commute going 55-60mph. It's learning. It only has 1100 miles in. I decided to try out eco mode. I noticed that driving on normal, sitting idle, sucks gas. While in eco mode, not so much. On my 3 mile commute to work, I waste 10mpgs. I even punched it once, (someone tried to get in front of me), but it still goes, but not the same as in normal. The engine is fairly new. I have a cheap tonneau cover that helps with the drag. I don't think I will see real high numbers until I leave the island. With my 2019 F150 XLT, gas lasted three weeks (36 Gal tank), and I let it go to 1/4 tank before filling up. With gas prices the way they are, I see it last two weeks and fill up at the half. The last time I tried at a 1/4 tank, the pump went to $100 and stopped. I was upset because it wasn't all the way full. I am trying to squeeze every mpg I can.
