The #18 UpGarage Honda NSX GT3 shared by Takashi Kobayashi and Shun Koide had earned its third win of the season in thrilling style, as the leading Saitama Toyopet Toyota GR Supra ran out of fuel in sight of the chequered flag.
Kobayashi surged by the ailing Toyota driven in the closing stint by Hiroki Yoshida to snatch the win by just eight tenths of a second.
However, the #18 machine failed post-race technical inspection due to a ride height infraction and was disqualified as a result.
It means that the Saitama Toyopet Toyota of Yoshida and Kohta Kawaai inherits its first victory of the season.
Shade Racing duo Katsuyuki Hiranaka and Eijiro Shimizu move up to second, while Team LeMans Audi pair Yoshiaki Katayama and Roberto Merhi are promoted to the final step on the podium.
The #18 car's disqualification has major implications for the title battle, as Kobayashi and Koide had been poised to move into a commanding 15-point lead with only two races to go.
Instead, Yoshida and Kawaai now stand to lead the championship on 50 points, 10 clear of Kobayashi and Koide as well as Team Studie BMW driver Seiji Ara, who failed to score at Sugo.
Kondo Racing Nissan pair Joao Paulo de Oliveira and Teppei Natori, who are promoted to 10th, now sit 11 points off the lead.
Revised GT300 results:
| Pos. | No. | Car | Drivers | Laps | Time/Diff | Tire | SW |
|---|---|---|---|---|---|---|---|
| 1 | 52 | SAITAMATOYOPET GB GR Supra GT | Hiroki Yoshida Kohta Kawaai |
79 | 2:25'47.096 | BS | 90 |
| 2 | 20 | SHADE RACING GR86 GT | Katsuyuki Hiranaka Eijiro Shimizu |
78 | 2:24'31.619 | DL | 3 |
| 3 | 6 | DOBOT Audi R8 LMS | Yoshiaki Katayama Roberto Merhi |
78 | 2:24'38.406 | YH | 45 |
| 4 | 61 | SUBARU BRZ R&D SPORT | Takuto Iguchi Hideki Yamauchi |
78 | 2:24'48.069 | DL | 69 |
| 5 | 4 | GOODSMILE HATSUNE MIKU AMG | Nobuteru Taniguchi Tatsuya Kataoka |
78 | 2:24'56.539 | YH | 27 |
| 6 | 65 | LEON PYRAMID AMG | Naoya Gamou Takuro Shinohara |
78 | 2:24'59.021 | BS | 72 |
| 7 | 50 | ANEST IWATA Racing RC F GT3 | Igor Fraga Yuga Furutani |
78 | 2:24'59.744 | YH | 3 |
| 8 | 96 | K-tunes RC F GT3 | Morio Nitta Shinichi Takagi |
78 | 2:25'14.206 | DL | 15 |
| 9 | 10 | PONOS GAINER GT-R | Hironobu Yasuda Riki Okusa |
78 | 2:25'16.445 | DL | 39 |
| 10 | 56 | REALIZE NISSAN MECHANIC CHALLENGE GT-R | JP de Oliveira Teppei Natori |
78 | 2:25'19.299 | YH | 100 |
| 11 | 31 | apr LC500h GT | Koki Saga Kazuto Kotaka |
78 | 2:25'44.039 | BS | 42 |
| 12 | 11 | GAINER TANAX GT-R | Ryuichiro Tomita Keishi Ishikawa |
77 | 2:24'32.547 | DL | 78 |
| 13 | 7 | Studie BMW M4 | Seiji Ara Bruno Spengler |
77 | 2:25'03.688 | MI | 100 |
| 14 | 88 | JLOC Lamborghini GT3 | Takashi Kogure Yuya Motojima |
77 | 2:25'04.703 | YH | 48 |
| 15 | 360 | RUNUP RIVAUX GT-R | Takayuki Aoki Takuya Otaki |
77 | 2:25'10.632 | YH | |
| 16 | 22 | R'Qs AMG GT3 | Hisashi Wada Masaki Jyonai |
77 | 2:25'16.559 | YH | |
| 17 | 9 | PACIFIC VSPO NAC AMG | Ryohei Sakaguchi Jiatong Liang |
77 | 2:25'25.177 | YH | |
| 18 | 27 | Yogibo NSX GT3 | Yugo Iwasawa Reimei Ito |
77 | 2:25'25.534 | YH | 30 |
| 19 | 87 | Bamboo Airways Lamborghini GT3 | Kosuke Matsuura Natsu Sakaguchi |
77 | 2:25'30.486 | YH | 57 |
| 20 | 48 | Shokumou K's Frontier GT-R | Taiyo Ida Yuki Tanaka |
76 | 2:24'48.506 | YH | |
| 21 | 60 | Syntium LMcorsa GR Supra GT | Hiroki Yoshimoto Shunsuke Kohno |
76 | 2:25'04.314 | DL | 24 |
| 22 | 5 | MACHSYAKEN AIR BUSTER MC86 | Yusuke Tomibayashi Takamitsu Matsui |
71 | 2:17'12.210 | YH | |
| Ret | 30 | apr GR86 GT | Hiroaki Nagai Manabu Orido |
54 | 2:25'23.203 | YH | 6 |
| Ret | 2 | muta Racing GR86 GT | Yuui Tsutsumi Hibiki Taira |
10 | 14'56.215 | BS | 100 |
| 18 | UPGARAGE NSX GT3 | Takashi Kobayashi Shun Koide |
Disqualified | YH | 100 | ||
