The GT Asia Series was a sports car racing series based in Asia. The championship combines FIA GT3 specification cars as the elite class of the series with Ferrari Challenge, Porsche Cup and older GT3 machinery competing in the GTM class. The series had its first season in 2010 with a dozen GT3 cars and has since expanded with grid sizes of 26 or more cars and a 13-round calendar visiting tracks in China, Malaysia, Japan and Thailand. The Series is organized by the Asian Festival of Speed (AFOS) and sanctioned by the FIA.