# 2003 All Japan Grand Touring Car Championship

The 2003 All Japan Grand Touring Car Championship was the eleventh season of Japan Automobile Federation GT premiere racing. It was marked as well as the twenty-first season of a JAF-sanctioned sports car racing championship dating back to the All Japan Sports Prototype Championship. The GT500 class champions of 2003 were the #23 Xanavi NISMO Nissan Skyline GT-R team driven by Satoshi Motoyama and Michael Krumm and the GT300 class champions were the #3 Hasemi Motorsports Nissan Fairlady Z driven by Masataka Yanagida and Mitsuhiro Kinoshita, neither of which had won a single race during the course of the season.
The 2003 season saw the introduction of a comprehensive overhaul of the series' vehicle regulations. Manufacturers could now cut away the production vehicle's mainframe and replace the front and rear structures with pipe frame structures, which had also allowed for further suspension development. The engine could now be mounted freely in any position or any orientation, and the transmission could now be mounted freely in any position, allowing for the introduction of transaxle units. The size of the rear diffuser was reduced, and the underbody of the car had to be fitted with a flat bottom floor.
Toyota had fitted their GT500 Supra with a 5.2 litre version of the naturally-aspirated 3UZ-FE V8 engine to replace the four-cylinder 3S-GTE. Honda retained the 3.5 litre C32B V6 engine, which was now mounted longitudinally behind the cockpit. Nissan changed from the RB26DETT inline-six cylinder engine to the VQ30DETT V6 engine in the middle of 2002, and retained the lighter aluminium-block engine into 2003.

## Drivers and teams
### GT500

| Team | Make | Car | Engine | No. | Drivers | Tyre | Rounds |
| Esso Toyota Team LeMans | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 1 | Akira Iida | B | All |
| Esso Toyota Team LeMans | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 1 | Juichi Wakisaka | B | All |
| Autobacs Racing Team Aguri | Honda | Honda NSX | Honda C32B 3.5 L V6 | 8 | Keiichi Tsuchiya | B | All |
| Autobacs Racing Team Aguri | Honda | Honda NSX | Honda C32B 3.5 L V6 | 8 | Toshihiro Kaneishi | B | 1–3, 5–8 |
| Autobacs Racing Team Aguri | Honda | Honda NSX | Honda C32B 3.5 L V6 | 8 | Katsutomo Kaneishi | B | 4 |
| Calsonic Team Impul | Nissan | Nissan Skyline GT-R | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 12 | Yuji Ide | B | All |
| Calsonic Team Impul | Nissan | Nissan Skyline GT-R | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 12 | Benoît Tréluyer | B | All |
| G'Zox Mugen G'Zox Dome Racing Team | Honda | Honda NSX | Honda C32B 3.5 L V6 | 16 | Tom Coronel | B | All |
| G'Zox Mugen G'Zox Dome Racing Team | Honda | Honda NSX | Honda C32B 3.5 L V6 | 16 | Daisuke Ito | B | All |
| Takata Dome Racing Team | Honda | Honda NSX | Honda C32B 3.5 L V6 | 18 | Ryo Michigami | B | All |
| Takata Dome Racing Team | Honda | Honda NSX | Honda C32B 3.5 L V6 | 18 | Sébastien Philippe | B | 1–6, 8 |
| Takata Dome Racing Team | Honda | Honda NSX | Honda C32B 3.5 L V6 | 18 | Paolo Montin | B | 7 |
| Nismo | Nissan | Nissan Skyline GT-R | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 22 | Masami Kageyama | B | All |
| Nismo | Nissan | Nissan Skyline GT-R | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 22 | Richard Lyons | B | All |
| Nismo | Nissan | Nissan Skyline GT-R | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 23 | Michael Krumm | B | All |
| Nismo | Nissan | Nissan Skyline GT-R | Nissan VQ30DETT 3.0 L Twin Turbo V6 | 23 | Satoshi Motoyama | B | All |
| Team Advan Tsuchiya | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 25 | Jérémie Dufour | Y | All |
| Team Advan Tsuchiya | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 25 | Seiji Ara | Y | 1, 3–8 |
| Team Advan Tsuchiya | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 25 | Hideki Noda | Y | 2 |
| Project Mu Kraft | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 35 | Naoki Hattori | D | All |
| Project Mu Kraft | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 35 | Shigekazu Wakisaka | D | All |
| Toyota Team TOM'S | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 36 | Érik Comas | M | All |
| Toyota Team TOM'S | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 36 | Takeshi Tsuchiya | M | All |
| Toyota Team TOM'S | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 37 | Marco Apicella | M | All |
| Toyota Team TOM'S | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 37 | Takuya Kurosawa | M | All |
| au Toyota Team Cerumo | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 38 | Yuji Tachikawa | B | All |
| au Toyota Team Cerumo | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 38 | Hironori Takeuchi | B | All |
| Denso Toyota Team SARD | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 39 | Manabu Orido | Y | All |
| Denso Toyota Team SARD | Toyota | Toyota Supra | Toyota 3UZ-FE 5.2 L V8 | 39 | Dominik Schwager | Y | All |
| R&D Sport | Vemac | Vemac RD350R | Zytek ZV348 3.4 L V8 | 62 | Shogo Mitsuyama | D | 2–6, 8 |
| R&D Sport | Vemac | Vemac RD350R | Zytek ZV348 3.4 L V8 | 62 | Shinsuke Shibahara | D | 2–6, 8 |
| Mobil 1 Nakajima Racing | Honda | Honda NSX | Honda C32B 3.5 L V6 | 64 | Tsugio Matsuda | B | All |
| Mobil 1 Nakajima Racing | Honda | Honda NSX | Honda C32B 3.5 L V6 | 64 | Takashi Kogure | B | 1–3 |
| Mobil 1 Nakajima Racing | Honda | Honda NSX | Honda C32B 3.5 L V6 | 64 | André Lotterer | B | 4–8 |
| Hitotsuyama Racing | McLaren | McLaren F1 GTR | BMW S70/2 6.0 L V12 | 76 | Eiichi Tajima | D | All |
| Hitotsuyama Racing | McLaren | McLaren F1 GTR | BMW S70/2 6.0 L V12 | 76 | Yudai Igarashi | D | 1–3 |
| Hitotsuyama Racing | McLaren | McLaren F1 GTR | BMW S70/2 6.0 L V12 | 76 | Haruki Kurosawa | D | 4–5 |
| Hitotsuyama Racing | McLaren | McLaren F1 GTR | BMW S70/2 6.0 L V12 | 76 | Go Shimizu | D | 6–8 |
| JLOC | Lamborghini | Lamborghini Diablo JGT-1 | Lamborghini L532 6.0 L V12 | 88 | Hisashi Wada | D | All |
| JLOC | Lamborghini | Lamborghini Diablo JGT-1 | Lamborghini L532 6.0 L V12 | 88 | Naohiro Furuya | D | 1–3 |
| JLOC | Lamborghini | Lamborghini Diablo JGT-1 | Lamborghini L532 6.0 L V12 | 88 | Koji Yamanishi | D | 4–8 |
| Raybrig Team Kunimitsu with Mooncraft | Honda | Honda NSX | Honda C32B 3.5 L V6 | 100 | Hiroki Katoh | B | All |
| Raybrig Team Kunimitsu with Mooncraft | Honda | Honda NSX | Honda C32B 3.5 L V6 | 100 | Hidetoshi Mitsusada | B | All |

### GT300

| Team | Make | Car | Engine | No. | Drivers | Tyre | Rounds |
| Verno Tokai Dream28 | Honda | Honda NSX | Honda C32B 3.4 L V6 | 2 | Kazuho Takahashi | Y | All |
| Verno Tokai Dream28 | Honda | Honda NSX | Honda C32B 3.4 L V6 | 2 | Akira Watanabe | Y | All |
| Hasemi Motorsport | Nissan | Nissan Fairlady Z | Nissan VQ35DE 3.5 L V6 | 3 | Mitsuhiro Kinoshita | Y | All |
| Hasemi Motorsport | Nissan | Nissan Fairlady Z | Nissan VQ35DE 3.5 L V6 | 3 | Masataka Yanagida | Y | All |
| Team B-1 | Vemac | Vemac RD320R | Honda C32B 3.4 L V6 | 5 | Tetsuji Tamanaka | Y | All |
| Team B-1 | Vemac | Vemac RD320R | Honda C32B 3.4 L V6 | 5 | "Gō Mifune" | Y | All |
| RE Amemiya Racing | Mazda | Mazda RX-7 | Mazda RE20B 2.0 L 3-rotor | 7 | Nobuteru Taniguchi | Y | All |
| RE Amemiya Racing | Mazda | Mazda RX-7 | Mazda RE20B 2.0 L 3-rotor | 7 | Takayuki Ohi | Y | All |
| A&S Racing | Mosler | Mosler MT900R | Chevrolet LS1 6.2 L V8 | 9 | Katsuhiko Tsutsui | Y | All |
| A&S Racing | Mosler | Mosler MT900R | Chevrolet LS1 6.2 L V8 | 9 | Ichijo Suga | Y | 1–5, 7–8 |
| A&S Racing | Mosler | Mosler MT900R | Chevrolet LS1 6.2 L V8 | 9 | Naohiro Furuya | Y | 6 |
| Team LeyJun | RGS | RGS Mirage GT1 | Chevrolet LS1 5.7 L V8 | 10 | "OSAMU" | D | 1–6 |
| Team LeyJun | RGS | RGS Mirage GT1 | Chevrolet LS1 5.7 L V8 | 10 | Shinichi Kurashima | D | 1–3 |
| Team LeyJun | RGS | RGS Mirage GT1 | Chevrolet LS1 5.7 L V8 | 10 | Tatsuya Mizutani | D | 4 |
| Team LeyJun | RGS | RGS Mirage GT1 | Chevrolet LS1 5.7 L V8 | 10 | Naohiro Furuya | D | 5–6 |
| Team LeyJun | Vemac | Vemac RD320R | Honda C32B 3.4 L V6 | 63 | "OSAMU" | D | 8 |
| Team LeyJun | Vemac | Vemac RD320R | Honda C32B 3.4 L V6 | 63 | Takamasa Nakagawa | D | 8 |
| Jim Gainer Racing | Ferrari | Ferrari 360 | Ferrari F131B 3.6 L V8 | 11 | Hideshi Matsuda | Y | All |
| Jim Gainer Racing | Ferrari | Ferrari 360 | Ferrari F131B 3.6 L V8 | 11 | Tetsuya Tanaka | Y | All |
| Amprex Motorsports | Mazda | Mazda RX-7 | Mazda RE20B 2.0 L 3-rotor | 14 | Tengku Djan Ley | BF | 5 |
| Amprex Motorsports | Mazda | Mazda RX-7 | Mazda RE20B 2.0 L 3-rotor | 14 | Tetsuya Yamano | BF | 5 |
| Amprex Motorsports | BMW | BMW M3 (E46) | BMW M52 3.2 L I6 | 15 | Genji Hashimoto | BF | All |
| Amprex Motorsports | BMW | BMW M3 (E46) | BMW M52 3.2 L I6 | 15 | Charles Kwan | BF | 1–6 |
| Amprex Motorsports | BMW | BMW M3 (E46) | BMW M52 3.2 L I6 | 15 | Tetsuya Yamano | BF | 7–8 |
| TOM'S Spirit | Toyota | Toyota MR-S (Rd. 1–6) Toyota Celica (Rd. 8) | Toyota 3S-GTE 2.0 L Turbo I4 | 17 | Masahiro Matsunaga | Y | 1–6, 8 |
| TOM'S Spirit | Toyota | Toyota MR-S (Rd. 1–6) Toyota Celica (Rd. 8) | Toyota 3S-GTE 2.0 L Turbo I4 | 17 | Masaoki Nagashima | Y | 1–6, 8 |
| Racing Project Bandoh | Toyota | Toyota MR-S (Rd. 1–2) Toyota Celica (Rd. 3–8) | Toyota 3S-GTE 2.0 L Turbo I4 | 19 | Takayuki Aoki | Y | All |
| Racing Project Bandoh | Toyota | Toyota MR-S (Rd. 1–2) Toyota Celica (Rd. 3–8) | Toyota 3S-GTE 2.0 L Turbo I4 | 19 | Minoru Tanaka | Y | All |
| Hitotsuyama Racing | BMW | BMW M3 CSL | BMW S50B32 3.2 L I6 | 21 | Mikio Hitotsuyama | D | 1 |
| Hitotsuyama Racing | BMW | BMW M3 CSL | BMW S50B32 3.2 L I6 | 21 | Takeshi Namekawa | D | 1–2 |
| Hitotsuyama Racing | BMW | BMW M3 CSL | BMW S50B32 3.2 L I6 | 21 | Yasushi Hitotsuyama | D | 2–5 |
| Hitotsuyama Racing | BMW | BMW M3 CSL | BMW S50B32 3.2 L I6 | 21 | Haruhiko Matsumoto | D | 3–5 |
| Team Taisan | Porsche | Porsche 911 GT3-R | Porsche M96/77 3.6 L F6 | 24 | Akihiro Asai | Y | All |
| Team Taisan | Porsche | Porsche 911 GT3-R | Porsche M96/77 3.6 L F6 | 24 | Atsushi Yogo | Y | 1, 3–8 |
| Team Taisan | Porsche | Porsche 911 GT3-R | Porsche M96/77 3.6 L F6 | 24 | Adam Wilcox | Y | 2 |
| Team Taisan | Porsche | Porsche 911 GT3-R | Porsche M96/77 3.6 L F6 | 26 | Shinichi Yamaji | Y | All |
| Team Taisan | Porsche | Porsche 911 GT3-R | Porsche M96/77 3.6 L F6 | 26 | Kazuyushi Nishizawa | Y | All |
| Team Taisan | Dodge | Dodge Viper Competition Coupe | Dodge Viper 8.0 L V10 | 55 | Eiji Yamada | Y | All |
| Team Taisan | Dodge | Dodge Viper Competition Coupe | Dodge Viper 8.0 L V10 | 55 | Takayuki Kinoshita | Y | All |
| Team Reckless | Toyota | Toyota MR-S | Toyota 3S-GTE 2.0 L Turbo I4 | 31 | Kota Sasaki | BF | All |
| Team Reckless | Toyota | Toyota MR-S | Toyota 3S-GTE 2.0 L Turbo I4 | 31 | Satoshi Goto | BF | All |
| Dentaire ProJet Racing with apr | Toyota | Toyota MR-S | Toyota 3S-GTE 2.0 L Turbo I4 | 34 | Seigo Nishizawa | BF | All |
| Dentaire ProJet Racing with apr | Toyota | Toyota MR-S | Toyota 3S-GTE 2.0 L Turbo I4 | 34 | Koji Matsuda | BF | All |
| Autobacs Racing Team Aguri | ASL | ASL ARTA Garaiya | Nissan SR20DET 2.0 L Turbo I4 | 43 | Morio Nitta | BF | All |
| Autobacs Racing Team Aguri | ASL | ASL ARTA Garaiya | Nissan SR20DET 2.0 L Turbo I4 | 43 | Shinichi Takagi | BF | All |
| Auto Staff Racing | Nissan | Nissan Silvia (S15) | Nissan SR20DET 2.0 L Turbo I4 | 51 | Naofumi Omoto | Y | 1–6, 8 |
| Auto Staff Racing | Nissan | Nissan Silvia (S15) | Nissan SR20DET 2.0 L Turbo I4 | 51 | Masanobu Kato | Y | 2–8 |
| Auto Staff Racing | Nissan | Nissan Silvia (S15) | Nissan SR20DET 2.0 L Turbo I4 | 51 | Adam Wilcox | Y | 1 |
| Auto Staff Racing | Nissan | Nissan Silvia (S15) | Nissan SR20DET 2.0 L Turbo I4 | 51 | Tsuyoshi Shirai | Y | 7 |
| R&D Sport | Porsche | Porsche 911 GT3-R | Porsche M96/77 3.6 L F6 | 61 | Atsushi Katsumata | D | 2–3, 5–6 |
| R&D Sport | Porsche | Porsche 911 GT3-R | Porsche M96/77 3.6 L F6 | 61 | Takeyuki Kishi | D | 2–3 |
| R&D Sport | Porsche | Porsche 911 GT3-R | Porsche M96/77 3.6 L F6 | 61 | Keiko Ihara | D | 5–6 |
| Team Gaikokuya | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 69 | Yutaka Yamagishi | Y | All |
| Team Gaikokuya | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 69 | Kei Idaka | Y | All |
| Team Gaikokuya | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 70 | Yoshimi Ishibashi | D | All |
| Team Gaikokuya | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 70 | Go Shimizu | D | 1–4 |
| Team Gaikokuya | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 70 | Hiroshi Wada | D | 5, 8 |
| Team Gaikokuya | Porsche | Porsche 996 GT3-RS | Porsche M96/77 3.6 L F6 | 70 | Isao Isashi | D | 6–7 |
| SigmaTec Racing Team | Toyota | Toyota MR-S (Rd. 1–4) Toyota Celica (Rd. 5–8) | Toyota 3S-GTE 2.0 L Turbo I4 | 71 | Keita Sawa | D | All |
| SigmaTec Racing Team | Toyota | Toyota MR-S (Rd. 1–4) Toyota Celica (Rd. 5–8) | Toyota 3S-GTE 2.0 L Turbo I4 | 71 | Guts Jyonai | D | 1–5 |
| SigmaTec Racing Team | Toyota | Toyota MR-S (Rd. 1–4) Toyota Celica (Rd. 5–8) | Toyota 3S-GTE 2.0 L Turbo I4 | 71 | Tatsuya Kataoka | D | 6–7 |
| SigmaTec Racing Team | Toyota | Toyota MR-S (Rd. 1–4) Toyota Celica (Rd. 5–8) | Toyota 3S-GTE 2.0 L Turbo I4 | 71 | Haruki Kurosawa | D | 8 |
| Cusco Racing | Subaru | Subaru Impreza WRX STI | Subaru EJ20 2.0 L Turbo F4 | 77 | Katsuo Kobayashi | Y | All |
| Cusco Racing | Subaru | Subaru Impreza WRX STI | Subaru EJ20 2.0 L Turbo F4 | 77 | Tatsuya Tanigawa | Y | All |
| Team Daishin | Nissan | Nissan Silvia (S15) | Nissan SR20DET 2.0 L Turbo I4 | 81 | Kazuki Hoshino | Y | All |
| Team Daishin | Nissan | Nissan Silvia (S15) | Nissan SR20DET 2.0 L Turbo I4 | 81 | Tadao Uematsu | Y | All |
| Arktech Motorsports | Porsche | Porsche 996 GT3 | Porsche M96/77 3.6 L F6 | 111 | Hiroya Iijima | D | 2–6, 8 |
| Arktech Motorsports | Porsche | Porsche 996 GT3 | Porsche M96/77 3.6 L F6 | 111 | Shigemitsu Haga | D | 2–6, 8 |
| 910 Racing | Porsche | Porsche 996 GT3 RS | Porsche M96/77 3.6 L F6 | 910 | Akira Hirakawa | Y | All |
| 910 Racing | Porsche | Porsche 996 GT3 RS | Porsche M96/77 3.6 L F6 | 910 | Yasuo Miyagawa | Y | All |
| 910 Racing | Porsche | Porsche 996 GT3 RS | Porsche M96/77 3.6 L F6 | 911 | Kazuyoshi Takamizawa | Y | 2, 4–6, 8 |
| 910 Racing | Porsche | Porsche 996 GT3 RS | Porsche M96/77 3.6 L F6 | 911 | Jukuchou Sunako | Y | 2, 4–6, 8 |

## Schedule

| Round | Race | Circuit | Date |
| 1 | GT Championship in TI | TI Circuit | March 30 |
| 2 | All Japan GT Fuji 500 | Fuji Speedway | May 4 |
| 3 | SUGO GT Championship | Sportsland SUGO | May 25 |
| 4 | Malaysian JGTC in Fuji Speedway | Fuji Speedway | July 13 |
| 5 | Japan Special GT Cup | Fuji Speedway | August 3 |
| 6 | Motegi GT Championship Race | Twin Ring Motegi | September 14 |
| 7 | Japan GT in Kyushu 300 km | Autopolis | October 26 |
| 8 | Suzuka GT 300 km | Suzuka Circuit | November 16 |
* Due to the SARS outbreak, round 4 of the championship, which was planned to be held at the Sepang Circuit on June 20 and 21, was cancelled and later replaced by a round at Fuji Speedway. The replacement Fuji round featured a unique format of two heat races, each featuring a sprint race for one of the team's drivers. The combined results of both heats would determine the overall winner of the round.

## Season results

| Round | Circuit | GT500 Winning Team | GT300 Winning Team |
| Round | Circuit | GT500 Winning Drivers | GT300 Winning Drivers |
| 1 | TI Circuit | #1 ESSO Team LeMans Toyota Supra | #24 Advan Team Taisan Porsche 996 |
| 1 | TI Circuit | Juichi Wakisaka Akira Iida | Atsushi Yogo Akihiro Asai |
| 2 | Mt. Fuji | #22 Motul NISMO Nissan Skyline GT-R | #26 Advan Team Taisan Porsche 996 |
| 2 | Mt. Fuji | Richard Lyons Masami Kageyama | Shinichi Yamaji Kazuyuki Nishizawa |
| 3 | Sportsland SUGO | #1 ESSO Team LeMans Toyota Supra | #31 Team Reckless Toyota MR-S |
| 3 | Sportsland SUGO | Juichi Wakisaka Akira Iida | Kota Sasaki Satoshi Goto |
| 4 | Mt. Fuji | Heat 1: #12 Calsonic Impul Nissan Skyline GT-R | Heat 1: #3 Hasemi Motorsports Nissan Fairlady Z |
| 4 | Mt. Fuji | Yuji Ide | Masataka Yanagida |
| 4 | Mt. Fuji | Heat 2: #12 Calsonic Impul Nissan Skyline GT-R | Heat 2: #11 Team Gainer Ferrari F360 |
| 4 | Mt. Fuji | Benoît Tréluyer | Tetsuya Tanaka |
| 4 | Mt. Fuji | Overall: #12 Calsonic Impul Nissan Skyline GT-R | Overall: #55 Eclipse Taisan Advan Dodge Viper |
| 4 | Mt. Fuji | Yuji Ide Benoît Tréluyer | Eiji Yamada Takayuki Kinoshita |
| 5 | Mt. Fuji | #18 Takata Dome Honda NSX | #19 WedsSport Toyota Celica |
| 5 | Mt. Fuji | Ryo Michigami Sebastien Philippe | Takayuki Aoki Minoru Tanaka |
| 6 | Twin Ring Motegi | #16 G-ZOX Dome Honda NSX | #71 Sigmatech Toyota Celica |
| 6 | Twin Ring Motegi | Tom Coronel Daisuke Ito | Tatsuya Kataoka Keita Sawa |
| 7 | Autopolis | #39 Denso Team SARD Toyota Supra | #71 Sigmatech Toyota Celica |
| 7 | Autopolis | Manabu Orido Dominik Schwager | Tatsuya Kataoka Keita Sawa |
| 8 | Suzuka Circuit | #12 Calsonic Impul Nissan Skyline GT-R | #19 WedsSport Toyota Celica |
| 8 | Suzuka Circuit | Yuji Ide Benoît Tréluyer | Takayuki Aoki Minoru Tanaka |

## Standings
### GT500 class
#### Drivers' standings
##### Scoring system

| Position | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | 10th |
| Points | 20 | 15 | 12 | 10 | 8 | 6 | 4 | 3 | 2 | 1 |
| Qualifying | 1 | 1 | 1 | | | | | | | |
| Fastest Lap | 1 | 1 | 1 | | | | | | | |
| Rank | Driver | TAI | FUJ | SUG | FUJ | FUJ | MOT | AUT | SUZ | PTS |
| 1 | Satoshi Motoyama Michael Krumm | 2 | 4 | 3 | 5 | 2 | 11 | 5 | 3 | 86 |
| 2 | Akira Iida Juichi Wakisaka | 1 | 12 | 1 | 6 | 4 | 4 | 4 | 7 | 83 |
| 3 | Masami Kageyama Richard Lyons | 8 | 1 | 5 | 2 | 11 | 13 | 6 | 4 | 65 |
| 4 | Benoît Tréluyer Yuji Ide | 12 | 2 | Ret | 1 | 16 | 6 | 11 | 1 | 64 |
| 5 | Érik Comas Takeshi Tsuchiya | 6 | 10 | 2 | 7 | 5 | 2 | 8 | 8 | 61 |
| 6 | Manabu Orido Dominik Schwager | 14 | 3 | 14 | 3 | 7 | 7 | 1 | 9 | 57 |
| 7 | Ryo Michigami | 3 | Ret | 7 | 8 | 1 | 14 | Ret | 2 | 55 |
| 7 | Sébastien Philippe | 3 | Ret | 7 | 8 | 1 | 14 | | 2 | 55 |
| 9 | Hironori Takeuchi Yuji Tachikawa | Ret | DSQ | 10 | 4 | 3 | 9 | 3 | 13 | 46 |
| 10 | Tom Coronel Daisuke Ito | 4 | Ret | 9 | 12 | 8 | 1 | 10 | 11 | 38 |
| 11 | Tsugio Matsuda | 5 | 6 | 8 | 13 | 9 | Ret | 2 | 12 | 36 |
| 12 | Hiroki Katoh Hidetoshi Mitsusada | 7 | 7 | 16 | 17 | 13 | 5 | 9 | 5 | 27 |
| 13 | Jérémie Dufour | 10 | Ret | 4 | 14 | 17 | 3 | 12 | Ret | 35 |
| 13 | Seiji Ara | 10 | | 4 | 14 | 17 | 3 | 12 | Ret | 35 |
| 15 | Naoki Hattori Shigekazu Wakisaka | 9 | 5 | 6 | 10 | 10 | 12 | 7 | 10 | 24 |
| 16 | André Lotterer | | | | 13 | 9 | Ret | 2 | 12 | 19 |
| 17 | Takashi Kogure | 5 | 6 | 8 | | | | | | 17 |
| 18 | Marco Apicella Takuya Kurosawa | Ret | 8 | 13 | 15 | 6 | 10 | 13 | 14 | 15 |
| 19 | Keiichi Tsuchiya | 11 | Ret | 11 | 11 | 12 | 8 | Ret | 6 | 9 |
| 19 | Toshihiro Kaneishi | 11 | Ret | 11 | | 12 | 8 | Ret | 6 | 9 |
| 20 | Eiichi Tajima | 13 | 9 | 12 | 18 | 14 | Ret | DNP | 15 | 2 |
| 20 | Yudai Igarashi | 13 | 9 | 12 | | | | | | 2 |
| 20 | Shogo Mitsuyama Shinsuke Shibahara | | 11 | 15 | 9 | Ret | Ret | | 16 | 2 |
| | Katsutomo Kaneishi | | | | 11 | | | | | 0 |
| | Haruki Kurosawa | | | | 18 | 14 | | | | 0 |
| | Hisashi Wada | 15 | Ret | Ret | 16 | 15 | 15 | Ret | Ret | 0 |
| | Koji Yamanishi | | | | 16 | 15 | 15 | Ret | Ret | 0 |
| | Naohiro Furuya | 15 | Ret | Ret | | | | | | 0 |
| | Go Shimizu | | | | | | Ret | DNP | 15 | 0 |
| | Hideki Noda | | Ret | | | | | | | 0 |
| | Paolo Montin | | | | | | | Ret | | 0 |
| Rank | Driver | TAI | FUJ | SUG | FUJ | FUJ | MOT | AUT | SUZ | 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

For teams that entered multiple cars, only the best result from each round counted towards the teams' championship.
| Rank | Team | No. | TAI | FUJ | SUG | FUJ | FUJ | MOT | AUT | SUZ | PTS |
| 1 | Nismo | 22 | 8 | 1 | 5 | 2 | 11 | 13 | 6 | 4 | 106 |
| 1 | Nismo | 23 | 2 | 4 | 3 | 5 | 2 | 11 | 5 | 3 | 106 |
| 2 | Esso Toyota Team LeMans | 1 | 1 | 12 | 1 | 6 | 4 | 4 | 4 | 7 | 83 |
| 3 | Dome Racing Team | 16 | | | | | 8 | 1 | 10 | 11 | 77 |
| 3 | Dome Racing Team | 18 | 3 | 14Ret | 7 | 8 | 1 | 14 | 14Ret | 2 | 77 |
| 4 | Toyota Team TOM'S | 36 | 6 | 10 | 2 | 7 | 5 | 2 | 8 | 8 | 66 |
| 4 | Toyota Team TOM'S | 37 | 16Ret | 8 | 13 | 15 | 6 | 10 | 13 | 14 | 66 |
| 5 | Team Impul | 12 | 12 | 2 | 17Ret | 1 | 16 | 6 | 11 | 1 | 64 |
| 6 | Toyota Team SARD | 39 | 14 | 3 | 14 | 3 | 7 | 7 | 1 | 9 | 57 |
| 7 | Toyota Team Cerumo | 38 | 17DNS | 18DSQ | 10 | 4 | 3 | 9 | 3 | 13 | 46 |
| 8 | Mobil 1 Nakajima Racing | 64 | 5 | 6 | 8 | 13 | 9 | 16Ret | 2 | 12 | 36 |
| 9 | Team Kunimitsu with Mooncraft | 100 | 7 | 7 | 16 | 17 | 13 | 5 | 9 | 5 | 27 |
| 10 | Team Advan Tsuchiya | 25 | 10 | 13Ret | 4 | 14 | 17 | 3 | 12 | 17Ret | 35 |
| 11 | Kraft | 35 | 9 | 5 | 6 | 10 | 10 | 12 | 7 | 10 | 24 |
| 12 | Mugen | 16 | 4 | 15Ret | 9 | 12 | | | | | 13 |
| 13 | Autobacs Racing Team Aguri | 8 | 11 | 16Ret | 11 | 11 | 12 | 8 | 15Ret | 6 | 9 |
| 14 | Hitotsuyama Racing | 76 | 13 | 9 | 12 | 18 | 14 | 18Ret | | 15 | 2 |
| 14 | R&D Sports | 62 | | 11 | 15 | 9 | 18Ret | 17Ret | | 16 | 2 |
| - | JLOC | 88 | 15 | 17Ret | 18Ret | 16 | 15 | 15 | 16Ret | 18Ret | 0 |
| Rank | Team | No. | TAI | FUJ | SUG | FUJ | FUJ | MOT | AUT | SUZ | PTS |

### GT300 class (Top 5)
#### Drivers

| Rank | Drivers | Number/Team | Points | Wins |
| 1 | Masataka Yanagida Mitsuhiro Kinoshita | #3 Hasemi Motorsports Nissan Fairlady Z | 77 | 0 |
| 2 | Keita Sawa | #71 Sigmatech Toyota Celica | 72 | 2 |
| 3 | Shinichi Yamaji Kazuyuki Nishizawa | #26 Advan Team Taisan Porsche 996 | 72 | 1 |
| 4 | Takayuki Aoki Minoru Tanaka | #19 WedsSport Toyota Celica | 63 | 2 |
| 5 | Kota Sasaki Satoshi Goto | #31 Team Reckless Toyota MR-S | 61 | 1 |