Jamie Whincup clinches 5th title finishing third, while Shane Van Gisbergen rules the final race.
Caruso, 30, has had a number of highlights during the 2013 season, including five top 10 finishes in his #36 Norton-sponsored Nissan.
Focus will be on DTM, USCC, BMW Sports Trophy and the Nürburgring 24 Hours.
Complete list of the 2013 FIA Champions.
Qualifying for the last race of the season will begin tomorrow.
Jason Bright: "It was pretty satisfying to pop out in the top ten when we had been running 24th."
Maxime Martin: "It was the target I had set myself, the main aim of my racing career."
Caruso finished 7th, Rick and Todd Kelly were 9th and 10th respectively.
Yvan Muller earned his fourth WTCC Drivers' title and Honda took their first Manufacturers’ title.
Proven Maxime Martin and youngster António Félix da Costa join the DTM ranks.
Erebus Motorsport will carry the logos of the New South Wales Rural Fire Service at this weekend.
The Sydney NRMA Motoring and Services 500 presents Nissan Motorsport with a great opportunity to end the season on a high.