My 2011 with 145,000 or so miles gets about 18.5 around town and I've seen over 22 many times on longer road trips. Over 23 if I can keep the highway speed down between 65-72, mostly flat terrain.
My Harbor Freight hitch carrier doesn't seem to affect MPG at all. That thing has been a lifesaver on family trips.
Stock size Michelin Costco tires, no lift.
100's of posts here on the 5th gen MPG subject-
Real World MPG with 5th Gen?