Brian Schott 
2005 Nissan Xterra SUV S 4WD 4dr SUV (4.0L 6cyl 5A)
Love it, Hate it.. It's a good vehicle!
 Purchased mine very much used @ 143K miles recently.. This is a very well built vehicle, with a strong engine. Ok, so the interior isn't fantastic, but it's functional, and mind you I've been happy with my European vehicles (BMW), exclusively, for many years now. Steering is a bit heavy, but I can forgive that. The "S" model doesn't have a rear locker, but who needs that anyhow. Driver's fabric seat has a rip in it, but I don't care, because I'm happy driving it. I wanted a vehicle I can take off road that's reliable, and this is it. But be well aware that there is a fatal flaw a few mention here in the reviews. If your planning on buying one, you'll want to research "SMOD", or "Strawberry milkshake of death". Essentially the trans fluid passes through a small radiator/heat exchanger in the bottom of the vehicles radiator that has a weak point -- the unions, and as such will fail causing the coolant to mix with the trans fluid. Nissan issued a TSB at some point in the past, creative owners bypassed this weakness during that time as a simple DIY, some supplemented this DIY with an auxiliary transmission cooler. I added one as a preventative, not that the vehicle was suffering with any problems.  Doing your homework on this will save you gobs of money. Luckily the owner of my vehicle (or Nissan) performed this bypass before a SMOD event occurred. I've performed a full fluid change on this vehicle (including all diff's, transfer cases, engine, and transmission oil) just to cover myself.  Other, somewhat minor, area of concern is the acessory belt tensioner as it's essentially weak, thus causing a squealing as the belt slips on the pulleys. Gates makes a kit and supplies you with the tensioner and belt for a reasonable 38 bucks through Amazon. Other minor area of concern is that the hood tends to pull and make noise as wind comes underneath it in heavy frontal winds. Take a 12mm socket and simply loosen the three hood latch bolts, and push the hood latch down, and retighten.. Done, and one. Great vehicle, just do your research. There's reports of people achieving over 360K on the stock vehicle with basic maintenance.. No reason you can achieve the same with a little TLC.