Have been getting 14 driving very short distances with a lot of stopping, up from under 12 during the winter. Just did a 60-mile mostly freeway round trip and got 19.3 on the way there and 20.5 on the way back with family in the truck plus A/C on medium to high the whole time. I have a little over 3k miles on it. I have noticed it get better with time, but it also coincided with the improved weather too. I am pleased with my gas mileage now. I wasn't 6 months ago.
I'd be pleased with those numbers, too!! LOL
I've seen 20.5 mpg once....... Once. I had the cruise set at 65 and had about a 40 mpg tailwind (literally). On the way home into that tailwind, my MPG average had dropped to 13.5!
A small update on my truck:
So my Rebel just crested 7000 miles. MPG is slowly getting a bit better, but nothing significant. I may be closer to 13 around town, as opposed to 11 or 12. Highway economy is still hit or miss because it's SO dependent on the wind. If I'm cruising at ~65 MPH I've seen 17-18 MPG. If I'm cruising at 75-80 MPH, I'm likely looking at 14-15 MPG. This is corrected for the 1" taller tires and hand calculated. Even with a leveling kit and slightly taller (but less aggressive tires), I'd hoped and expected better. If I have a headwind or tailwind I can easily see a +/- 3 or 4 MPG swing. I now rarely find myself getting on the highway without looking for flags to see how the wind is blowing!
Granted, mine's a Rebel so doesn't have the deployable air dam up front and I suspect the overall aero is worse because of the hood, but that's just speculation.
My friend with a 2WD 2018 F-150 3.5 Ecoboost routinely gets *well* over 20 MPG in similar conditions. Now if his were 4WD....with a bit of lift....and a taller tire....and maybe his economy would be as bad as mine, but I'm skeptical. Again, I love everything else about my truck and I'm slowly coming to grips with the economy numbers.