I know cars will go down in value and then back up if people consider it a classic must have but I think the e90 series has too much crap in it. I don't think anyone sane would buy a 20 year old e90 and want to deal with all the bullshit. You need a computer just to put a battery in the damn thing. Gotta say I am kinda jealous of e30's and e46's. No computers or anything and easy to fix I would imagine. I see e30's and e46 sell for more than my car on a regular basis.