The event is staged over a four-day weekend, from Thursday to Sunday, as a support category in the lead-up to the Australian Grand Prix. Two thirty-minute practice sessions and two ten-minute qualifying sessions to determine the starting grid for the first and second races are held on the Thursday; two further ten-minute qualifying sessions to determine the starting grid for the third and fourth races, and race one, is held on the Friday; races two and three are held on the Saturday and the fourth and final race, the final support race before the main Australian Grand Prix race, is held on the Sunday. All four races are 100 kilometres in length. In 2018 and 2019, two longer races were run at twilight and featured a mandatory pit stop; with the two shorter races run during daylight hours and not requiring a pit stop.
have held non-championship events at the Australian Grand Prix dating back to its first appearance on the Formula One calendar in 1985. The support event, most recently known as the Supercars Challenge, was held in every year from 1985 to 2017 except 2007. After the demise of the event, the series finally attained championship status for the 2018 season. The inaugural event saw four different winners across the four races, including Scott Pye's first championship race win in a dramatic third race of the weekend. Pye had taken the lead early in the race, and was among the drivers to remain on slick tyres during a late-race shower. Despite a brief off-track moment in the changing conditions, Pye held on for a narrow victory, the first for Walkinshaw Andretti United since the foreign investment in the team. One victory and three further podiums across the weekend saw Jamie Whincup take the overall event victory and the first Larry Perkins Trophy. In the event's second year, Scott McLaughlin failed to win the event despite winning three of the four races across the weekend, including the 1,000th Australian Touring Car Championship race. In the other race, McLaughlin and Cameron Waters, who were first and second on the grid, clashed on the way to the grid, leaving both drivers out of the race. The race was won by Chaz Mostert, who also went on to win the round and the trophy. The 2020 event, along with the 2020 Australian Grand Prix, was cancelled on the Friday morning of the event due to the COVID-19 pandemic. Two qualifying sessions had already been held the previous day.
