Wilson remained at DCR for the 2013 season after signing a long-term contract; he changed his car number to 19. He began the year with three consecutive top-nine finishes. Wilson qualified for the Indianapolis 500 in 14th and finished a career-high fifth. His performance for the rest of 2013 included three podium finishes—two third places at the first Detroit Belle Isle Grand Prix and the Grand Prix of Houston, and a season-high second at the Indy Grand Prix of Sonoma. At the season-ending IndyCar World Championships at the Auto Club Speedway, Wilson was involved in a high speed lateral impact with driver Tristan Vautier, sustaining a minor pulmonary contusion and three non-operable breakages to his pelvis. He was told to avoid bearing weight on his right leg before commencing rehabilitation. Wilson finished the season a series-high sixth in the drivers' standings with 472 points.