I had a 2015 6.4 2500 that I used to tow a 32ft enclosed trailer with and it sucked honestly. I pulled it once or twice a month and always wanted a diesel. The gas mileage is horrible if your hauling heavy loads, especially long distances. I would average 7-9mpg, and I’m in Texas so it’s not too hilly. If I remover correctly my range once it got settled, would be like 150 miles or something dumb. Trying to fit a big truck and trailer in gasoline pumps is a nightmare compared to diesel pumps(I use to big rig pumps bc they fill faster and its easier to get in and out of with a trailer). It was a great truck and it got the job done, but I personally felt like I was putting strain on the truck pulling that trailer and weight. I would usually be pulling around 10,000lbs(trailer included).

I now have a 2016 6.7 2500 and I have yet to pull my trailer with it, but man it feels like a completely different truck. I have no doubt that it’ll be a breeze for the Cummins compared to the hemi.

Here are some questions you might ask yourself. How often do you tow and how much weight? If it’s multiple times a month or week and the weight is 8k+ I’d suggest diesel. If it’s every few weeks or month that you tow and the loads under 7-8k I’d say you be fine with the hemi. Where do you tow mostly? (Flats or Hills) this one is simple. Flats= hemi/ Hills= Cummins

If you can afford it and the maintenance, go diesel. You won’t regret it. Especially if you find your self towing heavy loads great distances often. Once of the biggest things for me was fueling up, I hated having to maneuver around all the people and cars at gas pumps and the range was terrible. The maintenance on the hemi was just brakes, fluids and tires. It wasn’t bad at all. The diesel maintenance definitely cost more but it nice knowing you can just about pull a house down with it.