Consider yourself lucky, my 2016 XT gets 19.5 MPG with premium gas. And 90% of my driving consists of highway miles going 60-70 mph on cruise control. At what point does Subaru's MPG claim turn into a straight up lie?
This sounds like mine. Cruise at 70-75MPH to San Diego and get around 23 highway. City driving less than 10 mile trip is around 16-20 and I never Accelerate faster than 40%, if I use boost a little the whole trip MPG is ruined. My average for 2000 miles is 18 according to the computer. 16.8 according to my gas receipts. This sucks.
My commute is 2.5 Miles City. Always get 15-16MPG. Guess thats whats killing me. Didn't realize this was gonna be a problem.