I have a 2016 limited with just over 1000 miles on it
We have been seeing 17.5 mpg 90% highway driving in somewhat hilly areas.
I have been using Sunoco Ultra hoping for better results
Will mileage get better with more time / miles ?
I am guessing the full time 4x4 is killing me ?
We have a '15 LE and live in a hilly area as well, but mostly "country" roads or highway driving. We average about 20.2-20.5mpgs typically. Your mileage might get a little better with break-in too.