I took 1 home form the Dealership , I was impressed by the mileage and power so I had AJ order Me 1, BC we did not have the color and options I wanted on the ground or ordered, I have Hemi's and Cummins Engine's in My entire fleet of company and personal vehicles, I will tell you this My 1500s 2012-14 Avg about 12.8 Mixed HC, the 3.0 is getting 16.8 Mixed HC, I did take it on a 212 Mile HWY trip and it Avg 25.5 @ 70MPH HC, it took a little over 8.3 Gallons HC and filled and refilled off the same company tank and Nozzle.
My Hemi's get 17-19 GPM on same road.
Another area to consider is Air Ride, believe it or Not My Air ride 1500 Hemi's get about 1 MPG better on HWY avg then My spring ride 1500s. that Aero height does make a difference. Of course the 3.0 on order has this option.
When I jump form My spring ride to air 1500s you know when its air.