My fuelly.com sticker shows lifetime MPG of my 21 5.0 at 19.7.

From the get go its was spot on the EPA on the highway. I did 2367 miles in the first thirty days of ownership. Best ever was 25.8 over 496 miles of highway from Winchester VA to Boston MA last July. That wasn't a freak. I did 24.0 over 456 miles the same day.

I tow my Land Rover several times a year. Typically get around 12 +/- towing on interstates for the most part. So my overall lifetime mpg is lower than it would be otherwise. I am very happy with the mpg. It is far better than a 2005 Honda Pilot I had for 260k. I was lucky to get over 20 in that. Towing it emptied the 21 gallon tank in 150 miles.

 

That's right in line with what I'm getting with my 2016 XLT Screw 4x4 with 3.5 EB. I calibrated the dash (I believe I settled with 936 as the cal number) and it reads pretty much on the money now (I verify every other tank or so when convenient). It hates stop and go, loves the 45-55 range (25 mpg range) and drops under 20 mpg around 75 mph. I'm betting a 4x2 closer to the ground would get 5-10% better.

I don't know why my ratings are better than fuelly's for 2016, but I'd like to get a new one and see if it gets even better.

 

My stock 2010 super crew 4x4 xlt 5.4 3v gets 21.92 mpg at 66 mph..

I thought about upgrading to a 3.5 or the 2.7 but no point. My trucks paid off and I'm getting nearly the same for mileage

 

Its amazing how throttle inputs at varying terrain and shift points effects the MPG so drastically.

 

In ECO mode, my 2022 King Ranch with the 3.5L ECoboost, got 23 mpg on a highway trip. Thats about as good as it's ever been for me.

 

Interesting

 

I went from my home in West Palm Beach Florida to north of Orlando Florida and documented via Dashboard Computer my MPG using LUCAS Fuel Conditioner and Texaco 87 Octane, 65, 70, 80mph
2020 Ford F150 4x4. 2.7 Ecoboost
73,333
WPB to Orlando: 20.5 MPG
Orlando back to WPB: 21.0 MPG

i think the above is pretty darn good






QUOTE=avvblanc01;2620652]Every day on this site I see countless posts by users complaining that the gas mileage their trucks are getting isn't matching what the window sticker rating stated the truck would get. There is also a lot of speculation about how the EPA tests, but I have heard only a few posts that actually convey the true testing procedure. I think a lot of the confusion surrounding the ratings is rooted in the lack of understanding regarding the testing procedures that the EPA mandates. These numbers aren't calculated by actually driving the truck around a track or on the road. There would be too many variables to have repeatable results that would have a uniform procedure for all cars.

The EPA gas mileage numbers are calculated through the following procedure by each individual company and randomly verified by the EPA:

Vehicles are driven on a dynamometer in a controlled laboratory setting (in order to eliminate weather and road variables). Both city and highway driving are simulated.

The city test is a 7.5 mile trip lasting 23 minutes with 18 stops, at an average of about 20mph. About 4 minutes are spent idling (as at a traffic light), and a short freeway segment is included. The vehicle begins the test after being parked overnight at about 72˚F.

The highway test is a 10 mile trip with an average speed of about 48mph. The test is initiated with a warm engine (following the city test), and is conducted with no stops and very little idling.

In 2008, the EPA also added three new tests. these included:
1) A high speed test (still only averaging 48.37 mph but now including a few short spans reaching 80mph.
2) an air conditioning test, where the ambient temperature around the vehicle is increased, the AC is turned on, and the vehicle averages 21.2mph.
3) A cold temperature test, where the vehicle is cold started in a lab that is 20˚F and driven an average of 21.2 mph.
graphs of each test can be located here

In the real world, one needs to factor in weight changes based on packages, wind, road surface, tires, gears, aerodynamics of different packages... the list goes on. All of these things change depending on the vehicle configuration you buy or the environment you drive in. It would be impossible for ford or any other company to test each package and give results accordingly (if you've used ford's online builder you know just how many combinations there are). Ultimately, the testing procedures should probably change to reflect a more realistic view of driving (mainly speed) but for now, I would just like to hopefully clear up how the results are actually obtained. Please feel free to add anything else you know as I am not the end all source on this subject! Hopefully this post will be informative to people and help to clear up some of the debate. In the end, people need to understand that the results from the EPA are not a guaranteed rating for real world driving and that it is unrealistic to expect to obtain them on a daily basis. Instead just go out and enjoy your awesome trucks and stop complaining about the numbers! [/QUOTE]

 

I have a '24 F150 Lariat with the PowerBoost and the 7.2kw generator that we bought 2 weeks ago. We just got back from a 650+ mile trip to the mountains of NE Alabama and NW Georgia. Mostly Interstates at 78mph, maybe 60 miles of town driving and 30 miles of "pig trails". Averaged 21mpg and the bed was loaded. I was told the computer has to "learn" my driving. I filled up today with the bed empty and came home at 50 mph, 2-lane road for 9 miles. She got 28mpg, I kid you not.

 

2019 F150 Lariat w/ 3.7 turbo...

...averaged 17.5 since inception -- about 44,00 miles.

 

Yes, I am learning too that tires can make a huge difference in fuel economy--with all weather, all terrain, snowflake tires potentially being a significant downer.