The Archivement wont unlock, I sold 2000 Cars with only Main Body an QA checked.
I even tried two different Body Types (Sedan and Compact)
There is not even a Status Bar filling up. So i Guess not a Single Car gets counted.
I have an Idea why this happens though:
The Model is a Clone of an earlyer Design with everything enabled, i then disabled everything.
Maybe there is a Flag thats not being set to True when everything gets disabled