FA91 
2006 Nissan Xterra SUV S 4dr SUV 4WD (4.0L 6cyl 5A)
Very Mediocre
 We just traded our 2006 Nissan Xterra S.  We did not entertain buying another Nissan based on our experience with this Nissan.  It was not a bad vehicle, decent power - horrible mileage.  We previously had a Ford Explorer that consistently got 18 MPG.  Once in a while we would hit 17 with the X, but usually it was 14-16.  My wife commuted in the car and it was not used off road.  We had no major problems with the Xterra, but did have to take it back to the dealer for a loose exhaust shield - which is now loose again (or was when we traded it).  Rust was starting on the rear passenger door.  Brakes made a horrible sound when TC kicked in and brakes were applied.  Paint scratched easily.