[1] The season began on March 28 at the Grand Prix of St. Petersburg and ended on September 13 at Laguna Seca.
Uruguay's Santiago Urrutia became the first champion from South America since Raphael Matos in 2005, driving for Team Pelfrey.
Second place in the standings went to Cape Motorsports driver Neil Alberico, holding off a late-season challenge from Juncos Racing's Garett Grist for the position, by a tally of eight points.
The championship top five was completed by France's Timothé Buret of Juncos Racing, one point behind Tan, who was a race-winner at Indianapolis.
The only other race winner was Florian Latorre, a compatriot of Buret, who won on the Streets of Toronto for Cape Motorsports.