2016 Trail Edition, stock everything, running boards (wife's idea, don't ask). 4,500 miles on the odometer (going up daily).
80% highway driving in light traffic, summer blend top tier E10 87 octane fuel, average speed over the course of the fill up / trip odo reset of 40 mph. I drive 90% of the time. We average 20.3 MPG per the car's trip computer, but doing the math fill-up to fill-up it's spot on 18.80 - 18.93 MPG every time.
I drove it once on a 90 mile round trip all highway and the fuel economy indicator was spot on 21.2 MPG. But that's just myself, cruise control on a flat highway at 75mph, zero traffic on a warm and humid afternoon (95f w/60% humidity) with the A/C on. No kid, no wife, no cargo, started with a full tank of fuel.
Best I've ever seen was 23 MPG when I commuted on the 55mph speed limited state highway with very few stoplights that runs parallel with the interstate.