# 2006 Super GT Series

The 2006 Autobacs Super GT Series was the fourteenth season of the Japan Automobile Federation Super GT Championship including the All Japan Grand Touring Car Championship (JGTC) era and the second season as the Super GT series. It was also the twenty-fourth season of a JAF-sanctioned sports car racing championship dating back to the All Japan Sports Prototype Championship. The season began on March 19 and ended on November 5, 2006, after 9 races.
Juichi Wakisaka, André Lotterer, and Toyota Team TOM'S won the GT500 drivers' and teams' championships, in the debut season for the new Lexus SC430. Tetsuya Yamano, Hiroyuki Iiri, and RE Amemiya Racing won the GT300 drivers' and teams' championships in their Mazda RX-7. The championship battle was decided on the final lap of the season, with Yamano and Iiri winning the drivers' title on a tiebreaker over Kazuho Takahashi and Hiroki Katoh of Cars Tokai Dream28.

## Drivers and teams
### GT500

| Team | Make | Car | Engine | No. | Drivers | Tyre | Rounds |
| Toyota Team Cerumo | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 1 | Toranosuke Takagi | B | All |
| Toyota Team Cerumo | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 1 | Yuji Tachikawa | B | All |
| Toyota Team Cerumo | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 1 | Ronnie Quintarelli | B | 6 |
| Hasemi Motorsport | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 3 | João Paulo de Oliveira | B | All |
| Hasemi Motorsport | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 3 | Naoki Yokomizo | B | All |
| Hasemi Motorsport | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 3 | Darren Manning | B | 6 |
| Mobil 1 Toyota Team LeMans | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 6 | Akira Iida | B | All |
| Mobil 1 Toyota Team LeMans | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 6 | Tatsuya Kataoka | B | All |
| Mobil 1 Toyota Team LeMans | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 6 | Björn Wirdheim | B | 6 |
| Team Honda Racing | Honda | Honda NSX GT500 | Honda C32B 3.5 L V6 | 8 | Ralph Firman | B | All |
| Team Honda Racing | Honda | Honda NSX GT500 | Honda C32B 3.5 L V6 | 8 | Daisuke Ito | B | All |
| Team Honda Racing | Honda | Honda NSX GT500 | Honda C32B 3.5 L V6 | 8 | Toshihiro Kaneishi | B | 6 |
| Team Honda Racing | Honda | Honda NSX GT500 | Honda C32B 3.5 L V6 | 18 | Ryo Michigami | B | All |
| Team Honda Racing | Honda | Honda NSX GT500 | Honda C32B 3.5 L V6 | 18 | Takashi Kogure | B | All |
| Team Honda Racing | Honda | Honda NSX GT500 | Honda C32B 3.5 L V6 | 18 | Katsutomo Kaneishi | B | 6 |
| Team Impul | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 12 | Kazuki Hoshino | B | All |
| Team Impul | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 12 | Benoît Tréluyer | B | All |
| Team Impul | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 12 | Jérémie Dufour | B | 6 |
| Nismo | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 22 | Michael Krumm | B | All |
| Nismo | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 22 | Sakon Yamamoto | B | 1–3 |
| Nismo | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 22 | Richard Lyons | B | 4–9 |
| Nismo | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 22 | Fabio Carbone | B | 6 |
| Nismo | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 23 | Tsugio Matsuda | B | All |
| Nismo | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 23 | Satoshi Motoyama | B | All |
| Nismo | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 23 | Yuji Ide | B | 6 |
| Kondo Racing | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 24 | Masataka Yanagida | Y | All |
| Kondo Racing | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 24 | Érik Comas | Y | 1–4, 6 |
| Kondo Racing | Nissan | Nissan Fairlady Z GT500 | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 24 | Seiji Ara | Y | 5–9 |
| Toyota Team Tsuchiya | Toyota | Toyota Supra GT500 | Toyota 3UZ-FE 4.5 L V8 | 25 | Takeshi Tsuchiya | Y | All |
| Toyota Team Tsuchiya | Toyota | Toyota Supra GT500 | Toyota 3UZ-FE 4.5 L V8 | 25 | Manabu Orido | Y | All |
| Toyota Team Tsuchiya | Toyota | Toyota Supra GT500 | Toyota 3UZ-FE 4.5 L V8 | 25 | Hideki Noda | Y | 6 |
| Nakajima Racing | Honda | Honda NSX GT500 | Honda C32B 3.5 L V6 | 32 | Loïc Duval | D | All |
| Nakajima Racing | Honda | Honda NSX GT500 | Honda C32B 3.5 L V6 | 32 | Hideki Mutoh | D | All |
| Toyota Team Kraft | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 35 | Naoki Hattori | D | All |
| Toyota Team Kraft | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 35 | Peter Dumbreck | D | All |
| Toyota Team Kraft | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 35 | Eiichi Tajima | D | 6 |
| Toyota Team TOM'S | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 36 | Juichi Wakisaka | B | All |
| Toyota Team TOM'S | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 36 | André Lotterer | B | All |
| Toyota Team TOM'S | Lexus | Lexus SC430 GT500 | Lexus 3UZ-FE 4.5 L V8 | 36 | Adrian Sutil | B | 6 |
| Stile Corse | Maserati | Maserati MC12 GT1 | Maserati M144B/2 6.0 L V12 | 51 | Jan Magnussen | B | None |
| Stile Corse | Maserati | Maserati MC12 GT1 | Maserati M144B/2 6.0 L V12 | 51 | Seiji Ara | B | None |
| Toyota Team SARD | Toyota | Toyota Supra GT500 | Toyota 3UZ-FE 4.5 L V8 | 66 | André Couto | B | All |
| Toyota Team SARD | Toyota | Toyota Supra GT500 | Toyota 3UZ-FE 4.5 L V8 | 66 | Katsuyuki Hiranaka | B | All |
| Toyota Team SARD | Toyota | Toyota Supra GT500 | Toyota 3UZ-FE 4.5 L V8 | 66 | Soheil Ayari | B | 6 |
| Team Kunimitsu | Honda | Honda NSX GT500 | Honda C32B 3.5 L V6 | 100 | Shinya Hosokawa | B | All |
| Team Kunimitsu | Honda | Honda NSX GT500 | Honda C32B 3.5 L V6 | 100 | Sébastien Philippe | B | All |

### GT300

| Team | Make | Car | Engine | No. | Drivers | Tyre | Rounds |
| Cars Tokai Dream28 | Mooncraft | Mooncraft Shiden | Toyota 1UZ-FE 4.2 L V8 | 2 | Kazuho Takahashi | Y | All |
| Cars Tokai Dream28 | Mooncraft | Mooncraft Shiden | Toyota 1UZ-FE 4.2 L V8 | 2 | Hiroki Katoh | Y | All |
| Cars Tokai Dream28 | Mooncraft | Mooncraft Shiden | Toyota 1UZ-FE 4.2 L V8 | 2 | Hiroki Yoshimoto | Y | 6 |
| Team Mach | Vemac | Vemac RD320R | Honda C32B 3.4 L V6 | 5 | Tetsuji Tamanaka | Y | All |
| Team Mach | Vemac | Vemac RD320R | Honda C32B 3.4 L V6 | 5 | Katsuhiko Tsutsui | Y | All |
| Team Mach | Vemac | Vemac RD320R | Honda C32B 3.4 L V6 | 5 | Akira Watanabe | Y | 6 |
| RE Amemiya Racing | Mazda | Mazda RX-7 | Mazda RE20B 2.0 L 3-rotor | 7 | Hiroyuki Iiri | Y | 1, 3–9 |
| RE Amemiya Racing | Mazda | Mazda RX-7 | Mazda RE20B 2.0 L 3-rotor | 7 | Tetsuya Yamano | Y | 1, 3–9 |
| RE Amemiya Racing | Mazda | Mazda RX-7 | Mazda RE20B 2.0 L 3-rotor | 7 | Shinichi Yamaji | Y | 6 |
| A&S Racing | Mosler | Mosler MT900R | Chevrolet LS1 6.0 L V8 | 9 | Osamu Nakajima | Y | 1–3, 5–9 |
| A&S Racing | Mosler | Mosler MT900R | Chevrolet LS1 6.0 L V8 | 9 | Takaya Tsubobayashi | Y | 1 |
| A&S Racing | Mosler | Mosler MT900R | Chevrolet LS1 6.0 L V8 | 9 | Masaki Tanaka | Y | 2–3, 5–9 |
| JIM Gainer | Ferrari | Ferrari 360 | Ferrari F131B 3.6 L V8 | 10 | Hiromi Kozono | D | 1–7, 9 |
| JIM Gainer | Ferrari | Ferrari 360 | Ferrari F131B 3.6 L V8 | 10 | Naofumi Omoto | D | 1–7, 9 |
| JIM Gainer | Ferrari | Ferrari 360 | Ferrari F131B 3.6 L V8 | 10 | Eiji Yamada | D | 6 |
| JIM Gainer | Ferrari | Ferrari 360 | Ferrari F131B 3.6 L V8 | 11 | Tetsuya Tanaka | D | All |
| JIM Gainer | Ferrari | Ferrari 360 | Ferrari F131B 3.6 L V8 | 11 | Takayuki Aoki | D | All |
| Endless Sports | Nissan | Nissan Fairlady Z | Nissan VQ35DE 3.5 L V6 | 13 | Tomonobu Fujii | Y | All |
| Endless Sports | Nissan | Nissan Fairlady Z | Nissan VQ35DE 3.5 L V6 | 13 | Masami Kageyama | Y | All |
| Endless Sports | Porsche | Porsche 996 GT3-R | Porsche M96/73 3.6 L F6 | 14 | Mitsuhiro Kinoshita | H | All |
| Endless Sports | Porsche | Porsche 996 GT3-R | Porsche M96/73 3.6 L F6 | 14 | Kyosuke Mineo | H | All |
| Endless Sports | Porsche | Porsche 996 GT3-R | Porsche M96/73 3.6 L F6 | 14 | Jukuchou Sunako | H | 6 |
| Racing Project Bandoh | Toyota | Toyota Celica | Toyota 3S-GTE 2.0 L Turbo I4 | 19 | Koji Matsuda | Y | All |
| Racing Project Bandoh | Toyota | Toyota Celica | Toyota 3S-GTE 2.0 L Turbo I4 | 19 | Shigekazu Wakisaka | Y | All |
| Team Taisan with Nishizawa | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 26 | Kazuyuki Nishizawa | Y | 2–3, 9 |
| Team Taisan with Nishizawa | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 26 | Shinichi Yamaji | Y | 2–3, 9 |
| Direxiv Motorsport | Vemac | Vemac RD320R | Honda C32B 3.4 L V6 | 27 | Shogo Mitsuyama | Y | 1–6 |
| Direxiv Motorsport | Vemac | Vemac RD320R | Honda C32B 3.4 L V6 | 27 | Nobuteru Taniguchi | Y | 1–6 |
| MOLA | Nissan | Nissan Fairlady Z | Nissan VQ35DE 3.5 L V6 | 46 | Kota Sasaki | D | All |
| MOLA | Nissan | Nissan Fairlady Z | Nissan VQ35DE 3.5 L V6 | 46 | Taku Bamba | D | All |
| MOLA | Nissan | Nissan Fairlady Z | Nissan VQ35DE 3.5 L V6 | 47 | Hironobu Yasuda | D | All |
| MOLA | Nissan | Nissan Fairlady Z | Nissan VQ35DE 3.5 L V6 | 47 | Masaoki Nagashima | D | All |
| Toyota Team Cerumo | Toyota | Toyota Celica | Toyota 3S-GTE 2.0 L Turbo I4 | 52 | Hironori Takeuchi | K | 1–3, 5–9 |
| Toyota Team Cerumo | Toyota | Toyota Celica | Toyota 3S-GTE 2.0 L Turbo I4 | 52 | Koki Saga | K | 1–3, 5–9 |
| Toyota Team Cerumo | Toyota | Toyota Celica | Toyota 3S-GTE 2.0 L Turbo I4 | 52 | Keita Sawa | K | 6 |
| DHG Racing | Ford | Ford GT | DHG D35806V 3.5 L V8 | 55 | Daisuke Ikeda | Y | All |
| DHG Racing | Ford | Ford GT | DHG D35806V 3.5 L V8 | 55 | Hidetoshi Mitsusada | Y | All |
| DHG Racing | Ford | Ford GT | DHG D35806V 3.5 L V8 | 55 | Hiroaki Ishiura | Y | 6 |
| R&D Sport | Vemac | Vemac RD320R | Honda C32B 3.4 L V6 | 61 | Shogo Mitsuyama | Y | 7–9 |
| R&D Sport | Vemac | Vemac RD320R | Honda C32B 3.4 L V6 | 61 | Nobuteru Taniguchi | Y | 7–9 |
| R&D Sport | Vemac | Vemac RD408R | Mugen MF458S 4.5 L V8 | 62 | Shinsuke Shibahara | Y | All |
| R&D Sport | Vemac | Vemac RD408R | Mugen MF458S 4.5 L V8 | 62 | Hiroyuki Yagi | Y | 1–4 |
| R&D Sport | Vemac | Vemac RD408R | Mugen MF458S 4.5 L V8 | 62 | Haruki Kurosawa | Y | 5–9 |
| Team Gaikokuya | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 70 | Yoshimi Ishibashi | Y | 1–4, 6 |
| Team Gaikokuya | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 70 | Akira Hirakawa | Y | 1–4 |
| Team Gaikokuya | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 70 | Yutaka Yamagishi | Y | 6–7 |
| Team Gaikokuya | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 70 | Isao Ihashi | Y | 6 |
| Cusco Racing | Subaru | Subaru Impreza WRX STI | Subaru EJ20 2.0 L Turbo F4 | 77 | Katsuo Kobayashi | Y | 5, 7–9 |
| Cusco Racing | Subaru | Subaru Impreza WRX STI | Subaru EJ20 2.0 L Turbo F4 | 77 | Tatsuya Tanigawa | Y | 5 |
| Cusco Racing | Subaru | Subaru Impreza WRX STI | Subaru EJ20 2.0 L Turbo F4 | 77 | Yasushi Kikuchi | Y | 7–9 |
| JLOC | Lamborghini | Lamborghini Murciélago RG-1 | Lamborghini L535 6.0 L V12 | 87 | Koji Yamanishi | Y | 1–3, 5–9 |
| JLOC | Lamborghini | Lamborghini Murciélago RG-1 | Lamborghini L535 6.0 L V12 | 87 | Hisashi Wada | Y | 1–3, 5–9 |
| JLOC | Lamborghini | Lamborghini Murciélago RG-1 | Lamborghini L535 6.0 L V12 | 87 | Atsushi Yogo | Y | 6 |
| JLOC | Lamborghini | Lamborghini Murciélago RG-1 | Lamborghini L535 6.0 L V12 | 88 | Marco Apicella | Y | 1–3, 5–9 |
| JLOC | Lamborghini | Lamborghini Murciélago RG-1 | Lamborghini L535 6.0 L V12 | 88 | Yasutaka Hinoi | Y | 1–3, 5–9 |
| JLOC | Lamborghini | Lamborghini Murciélago RG-1 | Lamborghini L535 6.0 L V12 | 88 | Naohiro Furuya | Y | 6 |
| Ebbro Team Nova | Vemac | Vemac RD350R | Zytek ZV348 4.0 L V8 | 96 | Takuya Kurosawa | D | All |
| Ebbro Team Nova | Vemac | Vemac RD350R | Zytek ZV348 4.0 L V8 | 96 | Tsubasa Kurosawa | D | All |
| apr | Toyota | Toyota MR-S | Toyota 2GR-FE 3.5 L V6 | 101 | Morio Nitta | M | All |
| apr | Toyota | Toyota MR-S | Toyota 2GR-FE 3.5 L V6 | 101 | Shinichi Takagi | M | All |
| apr | Toyota | Toyota MR-S | Toyota 2GR-FE 3.5 L V6 | 777 | Minoru Tanaka | M | All |
| apr | Toyota | Toyota MR-S | Toyota 2GR-FE 3.5 L V6 | 777 | Kazuya Oshima | M | All |
| apr | Toyota | Toyota MR-S | Toyota 2GR-FE 3.5 L V6 | 777 | Keiichi Kobayashi | M | 6 |
| Arktech Motorsports | Porsche | Porsche 986 Boxster | Porsche M96/77 3.6 L F6 | 110 | Hideshi Matsuda | Y | All |
| Arktech Motorsports | Porsche | Porsche 986 Boxster | Porsche M96/77 3.6 L F6 | 110 | Ichijo Suga | Y | All |
| Arktech Motorsports | Porsche | Porsche 986 Boxster | Porsche M96/77 3.6 L F6 | 110 | Takaya Tsubobayashi | Y | 6 |
| Team LeyJun | Porsche | Porsche 996 GT3 Cup | Porsche M96/77 3.6 L F6 | 111 | Hiroya Iijima | Y | 1, 3, 6–7 |
| Team LeyJun | Porsche | Porsche 996 GT3 Cup | Porsche M96/77 3.6 L F6 | 111 | Masaki Jyonai | Y | 1, 3, 6–7 |
| Team LeyJun | Porsche | Porsche 996 GT3 Cup | Porsche M96/77 3.6 L F6 | 111 | Takeshi Namekawa | Y | 6 |
| Team Bomex Dream28 | Honda | Honda NSX | Honda C32B 3.4 L V6 | 666 | Shogo Suho | Y | 1–7, 9 |
| Team Bomex Dream28 | Honda | Honda NSX | Honda C32B 3.4 L V6 | 666 | Junichiro Yamashita | Y | 1, 3–7, 9 |
| Team Bomex Dream28 | Honda | Honda NSX | Honda C32B 3.4 L V6 | 666 | Yasuhiro Takasaki | Y | 2 |
| 910 Racing With Team Ishimatsu | Porsche | Porsche 996 GT3 RSR | Porsche M96/73 3.6 L F6 | 910 | Tadao Uematsu | Y | 1–4, 6–7, 9 |
| 910 Racing With Team Ishimatsu | Porsche | Porsche 996 GT3 RSR | Porsche M96/73 3.6 L F6 | 910 | Yasushi Kikuchi | Y | 1–4, 6 |
| 910 Racing With Team Ishimatsu | Porsche | Porsche 996 GT3 RSR | Porsche M96/73 3.6 L F6 | 910 | Ryohei Sakaguchi | Y | 6, 9 |
| 910 Racing With Team Ishimatsu | Porsche | Porsche 996 GT3 RSR | Porsche M96/73 3.6 L F6 | 910 | Shinichi Yamaji | Y | 7 |

### Vehicle changes
#### GT500

* Toyota introduced the Lexus SC 430 as their new GT500 vehicle, replacing the fourth-generation Toyota Supra. This coincided with the introduction of the Lexus nameplate for the Japanese market in July 2005. Four teams (TOM'S, Cerumo, LeMans, and Kraft) would run the new SC430, while SARD and Tsuchiya Engineering continued to use the Supra.
* Team Goh planned to enter the series with a Maserati MC12 GT1 driven by Seiji Ara and Jan Magnussen. Competing as Stile Corse, they participated in the pre-season test at Suzuka on 3–4 March, but after lacklustre results, the team scrapped their plans to race in GT500.

#### GT300

* Mooncraft Engineering and Cars Tokai Dream28 introduced the Shiden MC/RT-16, a prototype racing car based upon the Riley Mk.XI Daytona Prototype powered by a Toyota 1UZ-FE V8 engine.
* DHG Racing debuted in the series with a new racing version of the Ford GT supercar. The car was powered by the 3.5 litre DHG D35806V V8 engine, which was derived from the Mugen MF308 engine previously used in the Formula Nippon championship.

### Team changes
#### GT500

* Kondo Racing, owned by Japanese musician and former racing driver Masahiko Kondo, entered Super GT for the first time as a Nissan factory team.
* Toyota teams TOM'S and Kraft scaled back to single-car teams after running two cars each in 2005.
* Hitotsuyama Racing and their privately entered Ferrari 550 GTS and McLaren F1 GTR withdrew from the series.

#### GT300

* M-TEC (Mugen) closed their GT300 team to focus on their ongoing technical alliance with Team Kunimitsu in GT500.
* Autobacs Racing Team Aguri (ARTA) closed their GT300 team. apr, who operated ARTA's GT300 programme, signed ARTA drivers Morio Nitta and Shinichi Takagi to drive their number 101 Toyota MR-S sponsored by Toy Story Racing (through Run'A Entertainment).

### Driver changes
#### GT500

* Tsugio Matsuda transferred from Honda to Nissan, where he joined two-time GT500 champion Satoshi Motoyama in the number 23 NISMO entry. Likewise, Sakon Yamamoto transferred from Toyota to Nissan to partner another two-time GT500 champion, Michael Krumm, in the NISMO number 22 car.
* Masataka Yanagida and two-time GT500 champion Érik Comas joined the new Kondo Racing team. Yanagida transferred from NISMO, and Comas transferred from Hasemi Motorsport.
* Naoki Yokomizo transferred from Toyota to Nissan and joined Hasemi Motorsport, who also signed reigning All-Japan Formula 3 champion João Paulo de Oliveira for his Super GT series debut.
* Kazuki Hoshino, son of Impul co-founder Kazuyoshi Hoshino, stepped up to GT500 to join Team Impul. Hoshino replaced Yuji Ide, who signed with Super Aguri F1 Team.
* Nakajima Racing and Honda signed two recent Formula 3 graduates to drive for them in 2006: Formula 3 Euroseries graduate Loïc Duval, and All-Japan F3 race winner Hideki Mutoh.
* 2005 GT300 championship runner-up Shinya Hosokawa was promoted to GT500 with Team Kunimitsu, partnering Sébastien Philippe.
* André Lotterer transferred from Honda to Toyota, and joined Toyota Team TOM'S in the number 36 car. His new teammate was 2002 champion Juichi Wakisaka, who transferred from Toyota Team LeMans.
* In exchange for Wakisaka, Tatsuya Kataoka transferred from the defunct number 37 TOM'S team to join Toyota Team LeMans, alongside 2002 co-champion Akira Iida.
* Takeshi Tsuchiya joined his father's team, Toyota Team Tsuchiya, after transferring from TOM'S.
* Katsuyuki Hiranaka was promoted to GT500 with Toyota Team SARD, joining André Couto.

## Schedule

| Round | Race | Circuit | Date |
| 1 | Suzuka GT 300 km | Suzuka Circuit | March 19 |
| 2 | Okayama GT 300 km Race | Okayama International Circuit | April 9 |
| 3 | Fuji GT 500 km Race | Fuji International Speedway | May 4 |
| 4 | Japan GT Championship Malaysia | Sepang International Circuit | June 25 |
| 5 | SUGO GT 300 km Race | Sportsland Sugo | July 23 |
| 6 | International POKKA 1000km | Suzuka Circuit | August 20 |
| 7 | Motegi GT 300 km Race | Twin Ring Motegi | September 10 |
| 8 | Super GT in Kyushu GT 300 km | Autopolis International Race Course | October 15 |
| 9 | Fuji GT 300 km Race | Fuji International Speedway | November 5 |

## Results

| Round | Circuit | Date | Class | Pole Position | Fastest Lap | Race Winner |
| 1 | Suzuka Circuit | 19 March | GT500 | No. 8 Team Honda Racing | No. 12 Team Impul | No. 36 Toyota Team TOM'S |
| 1 | Suzuka Circuit | 19 March | GT500 | Daisuke Ito Ralph Firman | Benoît Tréluyer Kazuki Hoshino | Juichi Wakisaka André Lotterer |
| 1 | Suzuka Circuit | 19 March | GT300 | No. 46 MOLA | No. 87 JLOC | No. 88 JLOC |
| 1 | Suzuka Circuit | 19 March | GT300 | Kota Sasaki Taku Bamba | Koji Yamanishi Hisashi Wada | Marco Apicella Yasutaka Hinoi |
| 2 | Okayama International Circuit | 9 April | GT500 | No. 18 Team Honda Racing | No. 18 Team Honda Racing | No. 18 Team Honda Racing |
| 2 | Okayama International Circuit | 9 April | GT500 | Ryo Michigami Takashi Kogure | Ryo Michigami Takashi Kogure | Ryo Michigami Takashi Kogure |
| 2 | Okayama International Circuit | 9 April | GT300 | No. 46 MOLA | No. 27 direxiv motorsport | No. 27 direxiv motorsport |
| 2 | Okayama International Circuit | 9 April | GT300 | Kota Sasaki Taku Bamba | Shogo Mitsuyama Nobuteru Taniguchi | Shogo Mitsuyama Nobuteru Taniguchi |
| 3 | Fuji Speedway | 4 May | GT500 | No. 1 Toyota Team Cerumo | No. 1 Toyota Team Cerumo | No. 35 Toyota Team Kraft |
| 3 | Fuji Speedway | 4 May | GT500 | Yuji Tachikawa Toranosuke Takagi | Yuji Tachikawa Toranosuke Takagi | Naoki Hattori Peter Dumbreck |
| 3 | Fuji Speedway | 4 May | GT300 | No. 2 Cars Tokai Dream28 | No. 13 Endless Sports | No. 62 Willcom R & D Sport |
| 3 | Fuji Speedway | 4 May | GT300 | Kazuho Takahashi Hiroki Katoh | Masami Kageyama Tomonobu Fujii | Shinsuke Shibahara Hiroyuki Yagi |
| 4 | Sepang Circuit | 25 June | GT500 | No. 8 Team Honda Racing | No. 8 Team Honda Racing | No. 8 Team Honda Racing |
| 4 | Sepang Circuit | 25 June | GT500 | Daisuke Ito Ralph Firman | Daisuke Ito Ralph Firman | Daisuke Ito Ralph Firman |
| 4 | Sepang Circuit | 25 June | GT300 | No. 2 Cars Tokai Dream28 | No. 7 RE Amemiya Racing | No. 7 RE Amemiya Racing |
| 4 | Sepang Circuit | 25 June | GT300 | Kazuho Takahashi Hiroki Katoh | Tetsuya Yamano Hiroyuki Iiri | Tetsuya Yamano Hiroyuki Iiri |
| 5 | Sportsland SUGO | 23 July | GT500 | No. 1 Toyota Team Cerumo | No. 18 Team Honda Racing | No. 1 Toyota Team Cerumo |
| 5 | Sportsland SUGO | 23 July | GT500 | Yuji Tachikawa Toranosuke Takagi | Ryo Michigami Takashi Kogure | Yuji Tachikawa Toranosuke Takagi |
| 5 | Sportsland SUGO | 23 July | GT300 | No. 88 JLOC | No. 11 JIM GAINER | No. 46 MOLA |
| 5 | Sportsland SUGO | 23 July | GT300 | Marco Apicella Yasutaka Hinoi | Tetsuya Tanaka Takayuki Aoki | Kota Sasaki Taku Bamba |
| 6 | Suzuka Circuit Report | 20 August | GT500 | No. 12 Team Impul | No. 12 Team Impul | No. 12 Team Impul |
| 6 | Suzuka Circuit Report | 20 August | GT500 | Benoît Tréluyer Kazuki Hoshino Jérémie Dufour | Benoît Tréluyer Kazuki Hoshino Jérémie Dufour | Benoît Tréluyer Kazuki Hoshino Jérémie Dufour |
| 6 | Suzuka Circuit Report | 20 August | GT300 | No. 52 Toyota Team Cerumo | No. 19 Racing Project Bandoh | No. 52 Toyota Team Cerumo |
| 6 | Suzuka Circuit Report | 20 August | GT300 | Hironori Takeuchi Koki Saga Keita Sawa | Koji Matsuda Shigekazu Wakisaka | Hironori Takeuchi Koki Saga Keita Sawa |
| 7 | Twin Ring Motegi | 10 September | GT500 | No. 100 Team Kunimitsu | No. 100 Team Kunimitsu | No. 100 Team Kunimitsu |
| 7 | Twin Ring Motegi | 10 September | GT500 | Sébastien Philippe Shinya Hosokawa | Sébastien Philippe Shinya Hosokawa | Sébastien Philippe Shinya Hosokawa |
| 7 | Twin Ring Motegi | 10 September | GT300 | No. 62 Willcom R & D Sport | No. 62 Willcom R & D Sport | No. 11 JIM GAINER |
| 7 | Twin Ring Motegi | 10 September | GT300 | Shinsuke Shibahara Haruki Kurosawa | Shinsuke Shibahara Haruki Kurosawa | Tetsuya Tanaka Takayuki Aoki |
| 8 | Autopolis | 15 October | GT500 | No. 18 Team Honda Racing | No. 23 NISMO | No. 23 NISMO |
| 8 | Autopolis | 15 October | GT500 | Ryo Michigami Takashi Kogure | Satoshi Motoyama Tsugio Matsuda | Satoshi Motoyama Tsugio Matsuda |
| 8 | Autopolis | 15 October | GT300 | No. 2 Cars Tokai Dream28 | No. 2 Cars Tokai Dream28 | No. 2 Cars Tokai Dream28 |
| 8 | Autopolis | 15 October | GT300 | Kazuho Takahashi Hiroki Katoh | Kazuho Takahashi Hiroki Katoh | Kazuho Takahashi Hiroki Katoh |
| 9 | Fuji Speedway | 5 November | GT500 | No. 32 Nakajima Racing | No. 32 Nakajima Racing | No. 32 Nakajima Racing |
| 9 | Fuji Speedway | 5 November | GT500 | Loïc Duval Hideki Mutoh | Loïc Duval Hideki Mutoh | Loïc Duval Hideki Mutoh |
| 9 | Fuji Speedway | 5 November | GT300 | No. 777 Ryozanpaku with apr | No. 777 Ryozanpaku with apr | No. 101 apr |
| 9 | Fuji Speedway | 5 November | GT300 | Minoru Tanaka Kazuya Oshima | Minoru Tanaka Kazuya Oshima | Morio Nitta Shinichi Takagi |

## Standings
### GT500 Drivers
#### Scoring system

| Position | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | 10th | 11th | 12th | 13th | 14th | 15th |
| Points | 20 | 15 | 11 | 8 | 6 | 5 | 4 | 3 | 2 | 1 | | | | | |
| Suzuka 1000 | 25 | 20 | 16 | 13 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| Qualifying | 4 | 3 | 2 | | | | | | | | | | | | |
| Fastest Lap | 3 | 2 | 1 | | | | | | | | | | | | |
* Only the best five results in the first six races would be counted for the championship.
* There were no points awarded for pole position and fastest lap in the final race.
| Rank | Driver | SUZ | OKA | FUJ | SEP | SUG | SUZ | MOT | AUT | FUJ | PTS |
| 1 | André Lotterer Juichi Wakisaka | 1 | 8 | 3 | 15 | 4 | 10 | 2 | 7 | 4 | 80 |
| 2 | Shinya Hosokawa Sébastien Philippe | 7 | 2 | Ret | 4 | 11 | 9 | 1 | 3 | 13 | 79 |
| 3 | Takashi Kogure Ryo Michigami | 4 | 1 | Ret | 6 | Ret | Ret | 5 | 2 | 7 | 76 |
| 4 | Michael Krumm | 12 | 3 | 9 | 2 | 3 | 2 | 10 | 6 | 6 | 75 |
| 5 | Yuji Tachikawa Toranosuke Takagi | 5 | 5 | Ret | 12 | 1 | 7 | 3 | 5 | Ret | 71 |
| 6 | Tsugio Matsuda Satoshi Motoyama | 2 | Ret | 4 | 5 | 2 | DSQ | 14 | 1 | 11 | 69 |
| 7 | Ralph Firman Daisuke Ito | 3 | 7 | 8 | 1 | 8 | 6 | 15 | 11 | 14 | 68 |
| 8 | Kazuki Hoshino Benoît Tréluyer | 13 | 6 | 5 | 3 | 6 | 1 | 13 | 4 | 12 | 67 |
| 9 | Naoki Hattori Peter Dumbreck | 14 | 12 | 1 | 11 | 7 | 3 | 7 | 9 | 2 | 64 |
| 10 | Richard Lyons | | | | 2 | 3 | 2 | 10 | 6 | 6 | 62 |
| 11 | Loïc Duval Hideki Mutoh | 15 | Ret | 7 | 9 | 5 | 4 | 8 | 12 | 1 | 51 |
| 12 | Akira Iida Tatsuya Kataoka | 6 | 11 | 2 | 14 | 9 | Ret | 4 | 13 | 5 | 41 |
| 13 | Masataka Yanagida | 10 | 10 | 10 | 8 | 10 | 5 | 6 | 14 | 3 | 34 |
| 14 | Jérémie Dufour | | | | | | 1 | | | | 32 |
| 15 | João Paulo de Oliveira Naoki Yokomizo | 9 | 4 | 12 | 7 | 13 | 8 | 11 | 8 | 8 | 32 |
| 16 | Seiji Ara | | | | | 10 | 5 | 6 | 14 | 3 | 28 |
| 17 | Fabio Carbone | | | | | | 2 | | | | 20 |
| 18 | Érik Comas | 10 | 10 | 10 | 8 | | 5 | | | | 18 |
| 19 | Manabu Orido Takeshi Tsuchiya | 8 | 9 | 6 | 10 | 12 | Ret | 12 | 15 | 9 | 18 |
| 20 | Eiichi Tajima | | | | | | 3 | | | | 16 |
| 21 | Sakon Yamamoto | 12 | 3 | 9 | | | | | | | 15 |
| 22 | Toshihiro Kaneishi | | | | | | 6 | | | | 13 |
| 23 | André Couto Katsuyuki Hiranaka | 11 | 13 | 11 | 13 | Ret | 11 | 9 | 10 | 10 | 13 |
| 24 | Ronnie Quintarelli | | | | | | 7 | | | | 9 |
| 25 | Darren Manning | | | | | | 8 | | | | 8 |
| 26 | Adrian Sutil | | | | | | 10 | | | | 6 |
| 27 | Soheil Ayari | | | | | | 11 | | | | 5 |
| 28 | Hideki Noda | | | | | | Ret | | | | 5 |
| | Björn Wirdheim | | | | | | Ret | | | | 0 |
| | Yuji Ide | | | | | | DSQ | | | | 0 |
| Rank | Driver | SUZ | OKA | FUJ | SEP | SUG | SUZ | MOT | AUT | FUJ | PTS |
| Colour | Result |
| Gold | Winner |
| Silver | Second place |
| Bronze | Third place |
| Green | Points finish |
| Blue | Non-points finish |
| Blue | Non-classified finish (NC) |
| Purple | Retired (Ret) |
| Red | Did not qualify (DNQ) |
| Red | Did not pre-qualify (DNPQ) |
| Black | Disqualified (DSQ) |
| White | Did not start (DNS) |
| White | Withdrew (WD) |
| White | Race cancelled (C) |
| Blank | Did not practice (DNP) |
| Blank | Did not arrive (DNA) |
| Blank | Excluded (EX) |

#### Teams' standings

Source:
| Rank | Team | No. | SUZ | OKA | FUJ | SEP | SUG | SUZ | MOT | AUT | FUJ | Pts. |
| 1 | Toyota Team TOM'S | 36 | 1 | 8 | 3 | 15 | 4 | 10 | 2 | 7 | 4 | 75 |
| 2 | Nismo | 22 | 12 | 3 | 9 | 2 | 3 | 2 | 10 | 6 | 6 | 70 |
| 3 | Team Kunimitsu | 100 | 7 | 2 | Ret | 4 | 11 | 9 | 1 | 3 | 13 | 65 |
| 4 | Nismo | 23 | 2 | Ret | 4 | 5 | 2 | DSQ | 14 | 1 | 11 | 64 |
| 5 | Toyota Team Kraft | 35 | 14 | 12 | 1 | 11 | 7 | 3 | 7 | 9 | 2 | 61 |
| 6 | Team Impul | 12 | 13 | 6 | 5 | 3 | 6 | 1 | 13 | 4 | 12 | 60 |
| 7 | Toyota Team Cerumo | 1 | 5 | 5 | Ret | 12 | 1 | 7 | 3 | 5 | Ret | 58 |
| 8 | Team Honda Racing | 18 | 4 | 1 | Ret | 6 | Ret | Ret | 5 | 2 | 7 | 58 |
| 9 | Team Honda Racing | 8 | 3 | 7 | 8 | 1 | 8 | 6 | 15 | 11 | 14 | 48 |
| 10 | Nakajima Racing | 32 | 15 | Ret | 7 | 9 | 5 | 4 | 8 | 12 | 1 | 48 |
| 11 | Mobil 1 Toyota Team LeMans | 6 | 6 | 11 | 2 | 14 | 9 | Ret | 4 | 13 | 5 | 36 |
| 12 | Kondo Racing | 24 | 10 | 10 | 10 | 8 | 10 | 5 | 6 | 14 | 3 | 33 |
| 13 | Hasemi Motorsport | 3 | 9 | 4 | 12 | 7 | 13 | 8 | 11 | 8 | 8 | 28 |
| 14 | Toyota Team Tsuchiya | 25 | 8 | 9 | 6 | 10 | 12 | Ret | 12 | 15 | 9 | 13 |
| 15 | Toyota Team SARD | 66 | 11 | 13 | 11 | 13 | Ret | 11 | 9 | 10 | 10 | 9 |
| Rank | Team | No. | SUZ | OKA | FUJ | SEP | SUG | MOT | FUJ | AUT | SUZ | Pts. |

### GT300 Class (Top 3)
#### Drivers

| Rank | Drivers | Number/Team | Points | Wins |
| 1 | Tetsuya Yamano Hiroyuki Iiri | #7 Amemiya AsparaDrink RX-7 | 86 | 1 |
| 2 | Kazuho Takahashi Hiroki Katoh | #2 Privée Zurich APPLE Shiden | 86 | 1 |
| 3 | Shogo Mitsuyama Nobuteru Taniguchi | #61 enable Advan Vemac 320R | 75 | 0 |

#### Teams

| Rank | Number/Team | Car | Points |
| 1 | #7 RE Amemiya Racing | Amemiya Asparadrink RX-7 | 78 |
| 2 | #27 Direxiv Motorsport | direxiv Advan 320R | 67 |
| 3 | #2 Verno Tokai Dream 28 | Privée Zurich APPLE Shiden | 63 |