The 6.7L diesel has major problems. The engine clogs. I have had the truck contantly into the shop. Dodge does not have parts available and does not seem to have a fix designed. The engine parts need to be replaced or cleaned constantly. The fuel economy and power drop with each trip to the dealer. I seriously recommend NOT buying a Dodge with this engine. I paln to try to get different truck via the lemon laws in our state. The truck has been in the shop for the same problem over and over and is going in again soon.