 5 years! That's it. And now it's worthless.Like everyone else I have fallen victim to radiator/ transmission problems on my 2006 Nissan Xterra.I went to my dealer to get an oil change. While I was there I described a symptom of at certain speeds my 2006 Xterra felt like it was driving over a rumble strip and at other times there was a loss of acceleration. They informed me this is a known issue that Nissan has extended the warranty BUT my Xterra was right outside of the warranty period at 112K miles. They then proceeded to quote me around $6000 for the repair. When I informed them that the truck was practically brand new, they shrugged and said sorry