That Jalopnik article was great. I would challenge them and say that civic example was NOT a wagon. A wagon needs to have 3 full size side windows (front seats, back seats, cargo area). GTI, A3, Civic only two sets of windows. If it has a D pillar it's a wagon.

But in the end, Audi does not call it an avant. They call it a sportback. So it's not an avant.