Castroneves resigned with Penske for the 2013 season; the team modified his car in the off-season. Two podiums in the season-opening Grand Prix of St. Petersburg and the following Honda Indy Grand Prix of Alabama gave him the points lead. Castroneves fell to third after finishing 13th in the São Paulo Indy 300, He qualified eighth for the Indianapolis 500; rev limiter issues left him in sixth. In the Firestone 550 at Texas, Castroneves led the final 132 laps to win, breaking a tie with Marco Andretti for the points lead. Castroneves took two more second places at Milkwakee and the second Toronto race and finished no lower than ninth in the next eight races. An opportunity for him to win the championship before the season was over came to nothing when gearbox problems in the Grand Prix of Houston double leader dropped 25 points behind Dixon. To win the championship in the season-ending MAVTV 500 IndyCar World Championships, Castroneves needed to finish nine positions higher than Dixon. A sixth place for Castroneves and a fifth for Dixon gave Castroneves second overall with 550 points.