2013 Audi A3 Body Structure in Extrication January 2, 2013 Comments Off on 2013 Audi A3 Body Structure In the image below, the 2013 Audi A3 shows, in red, an extensive use of hot-formed steel – usually used in high stressed parts with strength in excess of 1000MPa. 2013 Models Audi Body Structure Extrication Hot Formed Hot Stamping 2013-01-02 Smitty