 With no other options available, di Grassi chose to remain in GP2 for another season and signed to drive for Racing Engineering, partnering Dani Clos.He was released from his Renault testing duties after the world governing body of motorsport, the Fédération Internationale de l'Automobile (FIA), prohibited Formula One teams from undertaking in-season testing.However, di Grassi was retained as Renault's reserve driver and was prepared as a potential replacement from Grosjean in the Singapore Grand Prix after Grosjean became ill with food poisoning.