The only thing that wears me out about this particular year of Xterra is, timing belt vs. chain. All of the newer models have the chain, and don't have the service interval that the older ones do, except that the timing chain tensioners are, wait for it... PLASTIC! and they have their own set of issues. The other thing I would do, is write down the VIN, and call a Nissan dealership service department about recalls. There were some recalls on mine like fuel pump seals etc that had they not been done, I'm positive I wouldn't have had the reliability I've experienced with mine.