The 34-year-old former Champ Car racer becomes the first of the team's two drivers to be announced which has since changed its name from Super Aguri following a new sponsorship deal with leading independent insurance company Amlin.
Legge joins previously confirmed drivers Daniel Abt and Lucas di Grassi at Audi Sport Abt, Sam Bird and Jaime Alguersuari at Virgin Racing, Bruno Senna and Karun Chandhok at Mahindra Racing, Nick Heidfeld and Stephane Sarrazin at Venturi, Franck Montagny at Andretti Autosport and Jarno Trulli at TrulliGP.
The following year she signed to drive in the 2006 Champ Car season and became the first woman to lead a lap in the series' history. After a second year, she switched to the DTM series enjoying seasons with Futurecom TME and Abt Sportsline. In 2012, Legge moved to the States to make her IndyCar debut, remaining in the US for a second season although this time competing in the American Le Mans Series.