Fwiw in the mtns of CO I've been getting 20-21mpg indicated on the v8 LR4. Checking manually it was really more like 18.5-19.5. I got the same on a hemi powered ram 1500, 20-21mpg indicated and actual on a 5.0 f150 and 21-23mpg indicated and actual on a 3.5 Ecoboost f150 gen 2, and the same actual mpg as the Landy in a gen 1 Ecoboost expedition. So I'd say the Landy is in line with other cars from 7 years ago but recently failed to make the gains everyone else did. I blame the silly supercharged v6.
Note 2017+ f150s and 2018+ expeditions are gen 2 motors and have 10spd transmissions.
My results and experiences are identical. I drove a 2017 Ecoboost Expedition max ( the long one lol) for a winter and fuel mileage was about the same. What is disappointing is the LR4 does it on Premium which sucks.