I own a 2012 Ram 2500 with 33K. It has been a great truck, just oil changes and scheduled maintenance, no issues at all. The truck is a beast, I love the exhaust brake and stock power. I have 4.10 gears which are great for towing but not great for speed/mileage and at present I do too many short trips so my mileage is pretty poor. That is my fault not the truck's and soon enough I should be back to longer trips on the highway with a trailer and it should be all good. I have accessorized and upgraded it a bit with shocks, leveling kit, tires, Mag Hytec pan and cover, and it is sharp looking truck, I get compliments on it often. Truck performs as advertised (i.e. like a smooth beast), I am very happy and love my second Cummins!!