Filippi was drafted into the Scuderia Coloni team for the second round of the 2011 GP2 Asia Series season after regular driver James Jakes opted to move to the United States in order to pursue a career in the IndyCar Series. He returned once again to Super Nova for the main series, alongside Fairuz Fauzy. After five rounds of the championship, he switched back to Coloni, replacing Kevin Ceccon. He immediately registered an improvement in form, winning his first race for the team at the Nürburgring, which also marked his 100th race in the series. He also won the Spa-Francorchamps sprint race and the Monza feature race, propelling him to a career-best second place in the drivers' championship.