The only problems I've had with my Alero sinse I bought it was the Rear Defrost not working... something about a little plastic piece that melted... it would cost me about $300 to fix... at least that's what the dealership said... bunch of crap if you ask me.. umm.... when my car runs, sometimes it's below 1000 rpm, and sometimes it will be right on 1000 rpm.... when it's below, it feels like the motor shakes a little.... Other than that, everything runs great! I've had no problems with the windows though.... my windsheild is a little chipped... and my cd player is really picky.
and that's all... It's pretty clean...