Chairman of the event, 1980 Formula One World Champion Alan Jones, said he was "delighted with the turnout".
"We proved that by holding the event in Sydney we can attract a good crowd to Eastern Creek. Not only were there Australian flags, but flags from all nations, which is exactly what we expected from Sydney being such a multi-cultural city."
Jones added: "I’ve got to admit that I was nervous. I didn’t know how the public would take to it, but they’ve embraced it, there were flags from all over the world and we had the Brazilians with their Samba drums – it was a fantastic atmosphere."
French driver Nicolas Lapierre won both the sprint and feature races, taking France to the top of the standings.
Next stop for the 24 A1 Grand Prix teams is the Sepang Circuit in Malaysia in two week's time.
