This is the worst review that I have seen so far on the Titan diesel. I hope that it is an isolated case: http://www.caranddriver.com/reviews/2016-nissan-titan-xd-long-term-test-review
That would sure keep me way if I were researching whether or not to buy. That said, any brand can have an isolated lemon. The question with a relatively new model is "how isolated is this problem?"