On 1 March 2011, Mann tested for the Indianapolis-based IndyCar Series team Conquest Racing at Texas Motor Speedway, and on 19 April, she announced that she would be piloting the No. 36 entry for Conquest Racing in the 2011 Indianapolis 500. On Sunday, 22 May, (Bump Day) Mann qualified 32nd for the 2011 Indianapolis 500, becoming the first British woman ever to qualify for the 500-mile race. During the race, she moved up 12 positions to finish in 20th place, despite a mechanical problem with her on-board water supply that left her severely dehydrated by the end of the race. She was sponsored in the race by Armando Montelongo, former star of the television show "Flip This House".