There are a wide number of different championships running at Formula 3 level around the world, headed by the FIA Formula 3 Championship that supports Formula 1. Below this, there are official Regional F3 championships covering Europe, America, Asia and Japan – as well as the independent Formula Renault Eurocup and W Series. Others, such as Euroformula and Super Formula Lights, remain faithful to the classic F3 concept.
GB4 outfit ADM and leading British Superbike team Nitrous Competitions have joined forces to enter GB3 in 2026 with a three-car line-up.