Put 30k on in the first year. For the most part the truck is great. Have owned several Cummins Dodges. Spend a lot of time in the diesel performance arena, and nothing beats the Cummins. Considerably better trucks than my past Cummins Dodges. Better brakes, better ride, better stock power and better stability for heavy towing. Mileage will never match the older 12v's. Too much stock power and emmissions equipment to have great mileage. Still much better and more powerful than any gas engine. Will buy more Cummins Dodges. Five in the family now.
The Cummins is hands down the best feature. The brakes are next. I am surprised with how well the 48RE auto has worked, having rowed gears the last 15 years.
The TIPM. Totally Integrated Power Module is too sensitive to be on a work truck. If you plow, tow trailers, or add additional accessories it will probably trip. Only way to fix it is with a dealer reset. Six resets and the unit needs replaced at $600 + labor. Only applies to 06 and newer.
† Edmunds.com received the highest numerical score in the proprietary J.D. Power 2014 Third-Party Automotive Website Evaluation Study℠. Results based on responses from 3,381 responses, measuring 14 companies and measures third-party automotive website usefulness among new and used vehicle shoppers. Proprietary study results are based on experiences and perceptions of owners surveyed from January 2014. Your experiences may vary. Visit jdpower.com.