Damn, my Ram 1500 only gets 14 locally...it's the one thing I'm disappointed with, fuel mileage.
My buddy just picked up an '18 Duramax before our trip, had like 500 miles on it when we left, over 5k on it now
I think he pulled 12-14 towing the JK on an aluminum trailer...said he got into the 20s in regular driving
That truck is pimp as hell tho! So damn comfy. Didn't even know the trailer was back there, down the highway or over the pass. He had an older Ram Megacab before that, and wanted another one but it was like $10k more than the Chevy...hard to justify.
Anyway, I have no plans on moving away from mine any time soon, but I do wish it got better fuel mileage.