What is the Audi A3's maximum cargo capacity and what features help optimize storage space?

I am considering purchasing an Audi A3 and am curious about its storage capabilities. How much cargo space can it hold and what features can I utilize to make the most of storage space?

The Audi A3 has a maximum cargo capacity of 36.3 cubic feet when the rear seats are folded down. To optimize storage space, consider using the cargo load securing system or the available roof rails for larger items.