The series is run by
ACI and promoted by ACI Sport and WSK Promotions, the latter is well known for running prominent karting championships including the
WSK Euro Series. The series was confirmed when the calendar for the inaugural season was announced in April 2023, with three rounds supporting the
Formula Regional European Championship. Nonetheless, the series showed close racing and a title fight with only a two-point gap going into the final race, where
Ugo Ugochukwu was declared the inaugural champion. The
2024 season saw
Akshay Bohra, who won two races in the opening round, take victory after title rival
Freddie Slater was affected by post-race penalties and damage in the final weekend. Euro 4 was renamed to E4 prior to the 2025 season. ==Cars==