I have a 2011 Ram crew cab 4X4 w/the hemi. No issues so far. Been very dependable, It was a "demo" that the dealership owner was driving. I have heard that there are some issues with lifters not rolling and wiping the cam lobes. So far, I haven't experienced that yet. Mine has the factory dual rear exhaust, which for some reason is much better sounding than other Rams with the same setup.