I recently purchased an 04 Titan 4x4 Crew Cab with 66K miles. This Titan replaced my ever failing Dodge Ram Quad Cab. This is my 3rd Nissan truck and I expect the same longevity out of the Titan as I had out of my Frontier and Hard Body. I purchased my Titan from a dealership in MD. The dealership performed needed repairs on it before I drove it home. The repairs were minor and included a rotor resurfacing and replacing a boot (they also changed the oil and put on new AT tires). I asked them about a tune up and they said that it was not needed until about 100K miles or for cause. I hope this helps.