is a Japanese racing driver. He finished runner-up in the 2022 F4 Japanese Championship. He was a member of the Honda Formula Dream Project.
Career Formula 4 In 2022, Mitsui made his single-seater racing debut by competing in the F4 Japanese Championship. He joined the Honda Formula Dream Project team alongside Syun Koide, and Kazuma Nishimura. He won the opening race of the season, and he collected two more wins along with eight more podiums to finish runner-up to teammate Koide. For 2023, Mitsui stayed in F4 to fight for the title alongside Yuto Nomura, and rookie Tosei Moriyama. Mitsui ended up finishing third place in the standings to runners-up Jin Nakamura, and the eventual champion Rikuto Kobayashi.
Super GT Mitsui would take up a role as the third driver for Team UpGarage in 2024. He did not make a single race in that season.
Super Formula Lights Mitsui joined new team Delightworks Racing for his Super Formula Lights debut in 2025.
Super Taikyu Mitsui also made his debut in Super Taikyu with Honda's M&K Racing in 2023. Mitsui then raced for Team Spoon in the ST-2 class in 2024, and one race appearance with Honda's HRC Team in ST-Q.
Racing record Career summary Season Series Team Races Wins Poles FLaps Podiums Points Position 2022 F4 Japanese Championship Honda Formula Dream Project 14 3 2 1 11 246 2nd Super Taikyu - ST-TCR M&K Honda Cars Okegawa Racing31223116‡2nd‡ 2023 F4 Japanese Championship Honda Formula Dream Project 14 4 4 3 7 181 3rd Super Taikyu - ST-TCR M&K Racing1111188‡1st‡2024 Super GT - GT300 Team UpGarage500000NC Super Taikyu - ST-2Team Spoon4100173‡6th‡ Super Taikyu - ST-Q Team HRC101010‡NC‡ 2025 Super Formula Lights Delightworks Racing 18 0 0 0 1 32 6thSuper Taikyu - ST-2Team Spoon1000184.5‡4th‡2026Super Formula LightsDelightworks Racing185351195.52ndSuper Taikyu - ST-2Team Spoon * Season still in progress. ‡ Team standings
Complete F4 Japanese Championship results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) YearTeam1234567891011121314DCPoints2022Honda Formula Dream Project FUJ12 FUJ11 SUZ11 SUZ12 FUJ21 FUJ22 SUZ21 SUZ22 SUG1 SUG2 AUT1 AUT2 MOT1 MOT2 2nd 2462023Honda Formula Dream Project FUJ12 FUJ11 SUZ11 SUZ12 FUJ21 FUJ22 SUZ21 SUZ22 SUG1 SUG2 AUT1 AUT2 MOT1 MOT2 3rd 181
Complete Super GT results (key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Team Car Class 1 2 3 4 5 6 7 8 DC Points 2024 Team UpGarage Honda NSX GT3 Evo GT300 OKA FUJ SUZ FUJ SUG AUT MOT SUZ NC 0 * Season still in progress. † did not involve in the round thus no points rewarded.
Complete Super Formula Lights results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Entrant 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Pos Points 2025 Delightworks Racing SUZ1 SUZ2 SUZ3 AUT1 AUT2 OKA1 OKA2 OKA3 SUG1 SUG2 SUG3 SUG4 FUJ1 FUJ2 FUJ3 MOT1 MOT2 MOT3 6th 32 2026 Delightworks Racing FUJ1 FUJ2 FUJ3 AUT1 AUT2 AUT3 SUZ1 SUZ2 SUZ3 OKA1 OKA2 OKA3 SUG1 SUG2 SUG3 MOT1 MOT2 MOT3 2nd 95.5 * Season still in progress.
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