2025 AU3 Championship

The 2025 AU3 Championship is a scheduled Australian racing series for Formula Regional open-wheeler race cars. It will be the inaugural season of the AU3 Championship, organized by the promoter of the Australian Formula Open series, two-time Australian Gold Star winner Tim Macrow. The championship will feature drivers competing in cars that conform to the current FIA Formula Regional regulations.

Drivers compete to win a fully-funded multi-day test program with Hillspeed, a GB3 Championship team.