The CVTs behind Maximas and Altimas with the V6 have probably the best track record at the company for longevity...they are beefed up compared to the units mated to the 4 cylinders but their reliability becomes spotty in the Pathfinder due to the added weight and potential towing duty. I had a 2014 Maxima with a CVT (290 hp) that I sold last year. 90k on the clock and no issues, but like all Nissan CVTs fresh fluid is key. The benefit of a CVT is holding the engine right in the peak power band. Doesn't sound cool but it always pulled nice and smooth on the highway.