I bought this '01 in 2005 with 75K. It's been pretty disappointing from the beginning. The handling is sloppy. I had to replace both motors at a cost of $300 each to the two front windows. That shouldn't have happened. The alternator also went out for another $600. New brake rotors on all four wheels cost another $900. I should have bought a used Camry or Accord (better quality), or a Ford Contour (cheaper, better handling). My parents had a '01 Camry and replaced nothing but the timing belt after 160K. No brakes, no window motors, no alternator. Nothing. The wheel caps are also extremely noisy. Poor quality over all. GM is probably better.
Interior is nice.
They've made the Altima quite a bit better, but I won't go back to Nissan. I'll probably replace this in a couple of years with one of the new compacts Ford is bringing over from Europe. At least they'll be interesting.