I haven't had a chance to pull anything with it yet, I'm averaging around 15 mpg, on the highway I saw around 18.5 but once I got off the interstate and started climbing it dropped fast. The first tank I ran after I got about 12. It is a beast for sure. The suspension is really stiff as to be expected, I had it out on about 20 miles of fire roads climbing a mountain today and it was a kidney jerker, when you air down you have to put up with the TPMS alarm but at least you can save your kidneys. It has some get up and go.
I do like the fact that it can tow 15,000 pounds and has over 3,000 pound payload. And the lifetime bumper to bumper warranty is hard to beat as well. I traded a 2013 ram with the pentastar and 8 speed, awesome truck but the towing was lacking. This one will handle anything I could ever throw at it.