 I bought it used with 15,000 miles and have been very pleased with it other than the gas mileage.  The CD changer refuses to eject my discs (still need to have that fixed).  Another review mentioned an annoying rattle from the defrost vents on the dash, and I have that as well.  I also had a clogged a/c drain tube which caused a major water leak on the passenger floor board.  Nissan will fix this design problem on 2005+ models, but I had to pay a little to have them clear the drain.  Everything else mechanical has been great so far at 55,000 miles.  The jack with the vehicle is terrible.  I found it unstable and dangerous to use when changing a tire on the side of the highway.