1. I live in Southern California so we don't typically have ice. So far no problems with the windows rolling down/up.
2. I have scraped the bottom of the front bumper twice since I got it over a year ago. I always exit slowly when going down a small curb.
3. I have AWD
4. This is my first German vehicle. Oil Change is $200 at the dealer but it's every 10,000 miles.
Hope this helps!