4200 miles, Northern Idaho and central Montana.2018 F-150 SCEW Lariat w. 2.7L turbo...21.9mpg average..Elevation gain was 5400 feet. Winds from all directions. Speed limit or +5 mph most of the time..No difference with no ethanol or ethanol..

 

Just 2 wheel drive with 3.55 rear. Yes 26 gallon.

 

Was getting 15.5 after bigger tires and lift

 

ATL to Ft Walton Beach FL, 769 miles round trip, zero fuel stops. Pulled back in my garage with 10 miles to empty, 22.8mpg per computer, calculated at 21.8 mpg after topping off today.
P.S.- The Blackstone Labs report on my 10k mile oil sample came back cleaner than the numbers they reference from the typical 6k mile OCI.
This truck continues to impress.

 

Had to drive to Mayo Clinic Jacksonville (about 240 miles each way) and running on I95 just at the Fla/Ga line I was flipping thru the truck's computer and I noticed this. Even at 70+mph I was getting over 22.mpg running on a flat stretch. I actually saw it hit 23.1 but by the time I got the phone turned on to camera it had started dropping off.

 

Fwiw, I made a trip from Newnan, GA to Sanford, NC and back last week. Round trip was about 850 miles. Set Cruise at 65 as soon as I hit the freeway and maintained it all the way for the trip (except for in town, of course). I was surprised. My old 2011 FX4, with a 5.0, 3.55 rear end, and a canopy, made right at 22 mpg. I've got almost 128,000 on it now. I certainly can't complain!

 

Wow, great mileage on the steel body truck.
Ran to the Pittsburgh Airport yesterday to pick up a cousin for bow hunting season.
93 miles one way. Lie-o-meter said 20.5mpg at 60-70 miles, 75-80mph.
Last ten miles was stop & go from an accident and road destruction.
Google maps rerouted me around that on the way home through residential areas. Overall 19.8 mpg, still ran 75-80 on the interstate section.

 

First 2 weeks of October we made 2 trips. First 1 to Rochester, NY for the weekend to visit my daughter (and sell the Cervini hood from my 03 SCREW). Came home for a week, took to work 1 day to fill up with gas on the Jersey side of the river and then packed up and off to the Outer Banks for a week. Mix of a few long trips and a lot of local driving up and down the island for a week ended up averaging between18.7 and 20.8. tried to take it extra easy and coax 21 out of it but just couldn't get there. All in all I was very pleased. Can't say whether the addition of the exhaust or the cap helped at all but it looked and sounded good.

 

Well, finally traded in my 2011 FX4 with 5.0 for a new 2020 Platinum with the 3.5 EB. 600 miles so far, breaking it in. Few quirks from my 2011, not necessarily improvements, but I'm keeping my mind wide open until I have it for more than five days!

 

I discovered that switching to premium fuel improves mileage almost enough to pay for the additional cost. However if you tow, it improves mileage very significantly. The issue is that it takes at least 2 or 3 tanks of the stuff for the computer to calibrate properly. Oh well, you pays your money and takes your chances.

I tow around 30 to 35% of the time and generally at high speeds so the bottom line for me has been premium is a better deal overall.

YMMV!