Hunter-Reay started 13th and was running in the top 10. On lap 282 of 300 Juan Pablo Montoya and Carpenter made contact (Montoya retired from the race while Carpenter continued). During the caution Hunter-Reay, Carpenter, Newgarden and Graham Rahal all made pit stops for new tires. On the restart on 291 the group quickly moved up through the field. On lap 299 Hunter-Reay passed Kanaan, who had dominated the race up to that point, for the lead. Hunter-Reay would go on to win the race after leading for only 2 laps in what would be Hunter-Reay's first lead lap finish of the season since winning the Indianapolis 500. Newgarden finished 2nd, Carpenter finished 5th and Rahal finished 7th. At the following races, the Honda Indy Toronto twin races at Exhibition Place, Hunter-Reay started 3rd in race #1 and 4th in race #2. In race #1 Hunter-Reay was battling with Kanaan on lap 40 when the two made contact, causing Hunter-Reay to crash into the wall and finish in 21st place. In race #2 Hunter-Reay finished in 14th place on the lead (56th) lap after several teams, including Hunter-Reay's, had their strategies changed during the race due to rain being on certain parts of the track at certain times. At the following race of the season, the Honda Indy 200 at Mid-Ohio at Mid-Ohio Sports Car Course, Hunter-Reay started 5th and spun out on lap 37. Despite the spin Hunter-Reay finished in 10th place. completing all 90 laps of the race. At the following race, the Wisconsin 250 at the Milwaukee Mile, Hunter-Reay had a poor qualifying performance and would start in 19th place due to the set up of the car being different than in practice (during practice Hunter-Reay had the 3rd fastest lap speed in the first practice session and the 6th fastest lap speed in the second practice session). In the race Hunter-Reay moved up through the field. After completing 168 laps Hunter-Reay had to retire from the race due to a damaged suspension and would finish in 21st place. At the following race, the GoPro Indy Grand Prix of Sonoma at Sonoma Raceway Hunter-Reay started 10th after having the fastest lap speed in the first practice session and the 3rd fastest lap speed in the second session. In the race Hunter-Reay moved into 4th place after Hélio Castroneves, Ryan Briscoe, Sébastien Bourdais and James Hinchcliffe (all of