Suzuki made his Grand Prix debut in the 2015 Moto3 World Championship with CIP, riding a Mahindra alongside Remy Gardner.

For the 2017 season, Suzuki left CIP Mahindra, and joined Sic58 Squadra Corse, riding alongside Tony Arbolino.

Suzuki stayed in Moto3 for his eighth consecutive year in the class and joined Leopard Racing Team in 2022, partnering 2021 championship runner-up Dennis Foggia.

In October 2023 it was announced that Suzuki would stay in Moto3 and join Liqui Moly Husqvarna Intact GP, teaming up with Collin Veijer.

[3] The team change didn't help the Japanese to get back to form, as he failed to fight for the leading positions and match his teammate's results.

After failing to find a seat for the new season, Suzuki announced his retirement from racing via social media on 8 February 2025.