Originally Posted by Rhinodart
I wouldn't know much about a half ton truck, but my 2015 5.7 Hemi 4x4 is lucky to get 17 mpg going 55 with a tail wind. The difference in the horsepower, torque, and weight has a lot to do with it, but I still don't know a single person who drives 55 and gets 19 and up mpg with a 3/4 ton truck, and don't know anyone who brags about mileage in the half ton except for Moparts... shruggy



My 6.4 2011 2500 with a 6.4 BGE short block and 5.7 top end and cam will get 19 MPG on the highway unloaded at about 65, never been able to hit an honest 20 even driving much slower. Starts to drop off pretty quick if loaded or driving faster. It easily does better than my 2013 2500 with a stock 5.7 and is pretty much dead even with my 2009 and 2012 1500s with stock 5.7s. The worst MPG I ever got with the 6.4 truck was towing the 2013 truck on an open trailer 75-80 mph in some hilly territory, it dropped down to 12.5 MPG. I do try to always run premium when towing as it has a lot of compression with the 5.7 heads on it.

I am not causing global warming, I am just trying to hold off a impending Ice Age!