Plastic body trim on the tailgate panel started peeling off after a winter in Amherst, MA. Vent fan broke after about 50k miles and only works now in the highest blower position (haven't had it looked at). Clutch had to be replaced after only about 75K miles. Fan belt makes a lot of noise. Factory radio lost all lights (but still worked) after about 50k miles.
The ride is comfortable compared to my old Toyota truck, but it seems a little stiff compared to other compact trucks built after 2000. Overall quality is pretty good... nothing is loose or rattling. I agree with a previous poster that the truck want to get revved up a bit before shifting. The clearance is helpful when doing outdoorsy trips, and you need to plow up the occasional unpaved road.
Your "broken vent fan" is simply a bad blower resistor. cheap nissan part and maybe 30 min. of work will fix that. it happened to my 94 altima, 93.5 G20, and 98 frontier... must be a nissan quirk.