 Purchased used in 2009, 48K miles, now 104.5K miles.  replaced clutch (premature failure, undersized original clutch, design defect, Nissan would not acknowledge or repair) at about 55K with non-Nissan appropriately-robust clutch parts from Jim Wolf Technology, San Diego, no further clutch issues to date.  Original BFG tires replaced at 63K. Replaced radiator at about 75k (early I think, assume due to substandard quality components).  Fuel sensor replaced under warranty at about 80K.  No other significant issues.  Interior fabric holding up very well, plastic in cargo area getting beat up, but as expected given how I use the X.  Original sound system crappy, replaced with better set up.For my needs (emphasized), excellent off-road and backcountry vehicle.  Very functional multi-use, versatile SUV. For my needs, pluses are: 1) best in class fuel economy for truck-based SUV based on my research, especially with 6-speed standard tranny (typically avg. 23 mpg if kept to 70 mph on highway, 2K rpm in 6th gear). 2) short wheel base, tight turning ratio, fits in my garage and very maneuverable on tight back country trails.  Only about 6" longer then our 2004 Honda Civic. 3) Easy to remove back seat bottom cushions (that's called attention to detail!), makes 6.5 foot long flat deck with home-built platform extension.  Comfortable for extended camping trip sleeping platform. roof rack compartment handy for solar shower bag!4) very good 4WD offroad performance in challenging, very rough terrain (SEVERELY tested in Canyonlands NP Maze District and other western locals, and was impressive).5) Initial research via Consumer Reports indicated very good repair record, similar to Toyota 4 Runner, but comparable Toyota vehicle $5-$6K more expensive, and no standard available.  Toyota probably more reliable in hind site, but Xterra cheaper to buy, so more $$ available for occasional repairs.