The 2021 Autobacs Super GT Series was a motor racing championship based in Japan for grand touring cars. The series is sanctioned by the Japan Automobile Federation (JAF) and run by the GT Association (GTA). It was the twenty-ninth season of the Japan Automobile Federation Super GT Championship which includes the All Japan Grand Touring Car Championship (JGTC) era, and the seventeenth season under the Super GT name. It was the thirty-ninth overall season of a national JAF sportscar championship, dating back to the All Japan Sports Prototype Championship.
TGR Team au TOM'S and drivers Yuhi Sekiguchi and Sho Tsuboi won the GT500 class championships, driving the Toyota Supra, after overcoming a 16-point deficit in the final round of the season. [1] The titles were secured in controversial circumstances as championship leader Naoki Yamamoto of Team Kunimitsu was taken out from a title-clinching position by GT300 class driver Ren Sato with 15 laps remaining in the final race of the season. [2] Driving the new Subaru BRZ, Takuto Iguchi and Hideki Yamauchi won the GT300 class championships for R&D Sport, giving Subaru their first-ever title in Super GT competition. It was also the first drivers' title for both Iguchi and Yamauchi, and the first for the R&D Sport team.
A provisional eight-round 2021 calendar was announced on 7 August 2020. [3] Autopolis, Okayama International Circuit, and Sportsland Sugo returned to the calendar after a year's absence. The Fuji GT 500km Race also returned to its traditional calendar slot on the Golden Week holiday of 3-4 May.
On 9 February 2021, the planned rounds at Chang International Circuit in Thailand and Sepang International Circuit in Malaysia were cancelled due to travel restrictions. A revised schedule was released on the same day with all eight rounds being held in Japan, and with the addition of an additional round at Fuji Speedway in November and Twin Ring Motegi in July. [4] On 11 May 2021, the third round at Suzuka International Racing Course, which had been set to take place on 30 May as the third round of the championship, was postponed indefinitely due to a renewed wave of COVID-19 cases in Japan. [5] The race was subsequently rescheduled to 22 August. [6]
| Round | Event | Circuit | Dates | 
|---|---|---|---|
| 1 | Takanokono Hotel Okayama GT 300km Race [7] | Okayama International Circuit | 10-11 April | 
| 2 | Takanokono Hotel Fuji GT 500km Race [8] | Fuji Speedway | 3-4 May | 
| 4 | Motegi GT 300km Race [9] | Twin Ring Motegi | 17-18 July | 
| 3 | Fujimaki Group Suzuka GT 300km Race [10] | Suzuka Circuit | 21-22 August | 
| 5 | Sugo GT 300km Race [11] | Sportsland Sugo | 11-12 September | 
| 6 | Autopolis GT 300km Race [12] | Autopolis | 23-24 October | 
| 7 | Motegi GT 300km Race [13] | Twin Ring Motegi | 6-7 November | 
| 8 | Fujimaki Group Fuji GT 300km Race [14] | Fuji Speedway | 27-28 November | 
The race at Suzuka Circuit was still promoted as the third round of the season, despite taking place after the July race at Twin Ring Motegi and being the fourth race of the season chronologically. Likewise, the July race at Motegi was still promoted as the fourth round of the championship, even though it was now the third race of the season chronologically. Drivers credited with winning Pole Position for their respective teams are indicated in bold text.
| Round | Circuit | Date | Class | Pole position | Race winner | 
|---|---|---|---|---|---|
| 1 | Okayama International Circuit | 11 April | GT500 | No. 37 TGR Team Keeper TOM'S | No. 14 TGR Team Eneos ROOKIE | 
|  Ryo Hirakawa  Sena Sakaguchi |  Kazuya Oshima  Kenta Yamashita | ||||
| GT300 | No. 11 GAINER | No. 56 Kondo Racing | |||
|  Katsuyuki Hiranaka  Hironobu Yasuda |  Kiyoto Fujinami  Joao Paulo de Oliveira | ||||
| 2 | Fuji Speedway | 4 May | GT500 | No. 19 TGR Team WedsSport Bandoh | No. 17 Astemo REAL Racing | 
|  Yuji Kunimoto  Ritomo Miyata |  Bertrand Baguette  Koudai Tsukakoshi | ||||
| GT300 | No. 61 R&D Sport | No. 60 LM Corsa | |||
|  Takuto Iguchi  Hideki Yamauchi |  Shunsuke Kohno  Hiroki Yoshimoto | ||||
| 3 | Twin Ring Motegi | 18 July | GT500 | No. 1 Team Kunimitsu | No. 1 Team Kunimitsu | 
|  Naoki Yamamoto  Tadasuke Makino |  Naoki Yamamoto  Tadasuke Makino | ||||
| GT300 | No. 10 GAINER | No. 2 muta Racing INGING | |||
|  Katsuyuki Hiranaka  Hironobu Yasuda |  Hiroki Katoh  Ryohei Sakaguchi | ||||
| 4 | Suzuka Circuit | 22 August | GT500 | No. 64 Modulo Nakajima Racing | No. 23 NISMO | 
|  Takuya Izawa  Hiroki Otsu |  Tsugio Matsuda  Ronnie Quintarelli | ||||
| GT300 | No. 61 R&D Sport | No. 244 Max Racing | |||
|  Takuto Iguchi  Hideki Yamauchi |  Atsushi Miyake  Yuui Tsutsumi | ||||
| 5 | Sportsland Sugo | 12 September | GT500 | No. 8 ARTA | No. 12 Team Impul | 
|  Tomoki Nojiri  Nirei Fukuzumi |  Kazuki Hiramine  Nobuharu Matsushita | ||||
| GT300 | No. 61 R&D Sport | No. 61 R&D Sport | |||
|  Takuto Iguchi  Hideki Yamauchi |  Takuto Iguchi  Hideki Yamauchi | ||||
| 6 | Autopolis | 24 October | GT500 | No. 16 Team Red Bull Mugen | No. 8 ARTA | 
|  Ukyo Sasahara  Toshiki Oyu |  Tomoki Nojiri  Nirei Fukuzumi | ||||
| GT300 | No. 31 apr | No. 31 apr | |||
|  Yuhki Nakayama  Koki Saga |  Yuhki Nakayama  Koki Saga | ||||
| 7 | Twin Ring Motegi | 7 November | GT500 | No. 19 TGR Team WedsSport Bandoh | No. 8 ARTA | 
|  Yuji Kunimoto  Ritomo Miyata |  Tomoki Nojiri  Nirei Fukuzumi | ||||
| GT300 | No. 18 Team UpGarage | No. 21 Audi Sport Team Hitotsuyama | |||
|  Takashi Kobayashi  Teppei Natori |  Shintaro Kawabata  Takuro Shinohara | ||||
| 8 | Fuji Speedway | 28 November | GT500 | No. 14 TGR Team Eneos ROOKIE | No. 36 TGR Team au TOM'S | 
|  Kazuya Oshima  Kenta Yamashita |  Yuhi Sekiguchi  Sho Tsuboi | ||||
| GT300 | No. 61 R&D Sport | No. 60 LM Corsa | |||
|  Takuto Iguchi  Hideki Yamauchi |  Shunsuke Kohno  Hiroki Yoshimoto | 
| Position | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | 10th | Pole | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| Points | 20 | 15 | 11 | 8 | 6 | 5 | 4 | 3 | 2 | 1 | 1 | 
| 
 | 
 | 
| 
 |