It came with a too small fuel tank and doesn't get the mileage a diesel should. 6-8 pulling a 28ft camp trailer and 16-18 empty depending on what tires I have on it.
Good LORD! My Kenworth gets 7-8 grossing 88,000..... That Cummins should hardly notice a little camp trailer behind it.
My '11 Ford F-250 W/6.7L diesel got 7.8MPG for 300Mi pulling my 38' bumper-hitch camper this spring. Had a quartering headwind running 75MPH on the GPS.
EGR and DPF have rendered diesels irrelevant for anyone who makes short trips. I'd never own the one I've got if I had to drive it every day.