I have had my 2015 Latitude for a week (description in my signature of the vehicle) and I filled it up and I figured just a little over 21 mpg which was the same as the computer said. I am normally a really heavy foot, but trying to go easy while getting some miles on it. I have had 4 cylinder cars which are rated 25 town and I get about 18 in them. I have several Ram 1500 trucks and was lucky to get 10 mpg in combined town and out of town driving. So, I am really happy with my initial gas mileage (not using the start, stop, start feature either).
Heck, I am happy with anything over 10mpg.
2017 Trailhawk L Plus 4 bX4,Rhino exterior,Power 8 way drivers seat, Willys in windshidel,Cold Weather Group, Comfort/Convenience Group,Trailer Tow Group, 3.2 -Liter V6, Black Hood Decal , Uconnect 8.4 , Safety Tech Group, Leather Interior Group, Ventilated/Memory seat Group,Navigation. No hole in roof.