Detroit GP Race 1 lineup
IndyCar Detroit GP Race 1 lineup after engine penalties from the Indy 500:
| SP | Car | Driver | Engine | Tire |
| 1 | 5 | Viso,EJ | Chevy | Primary |
| 2 | 18 | Conway,Mike | Honda | Primary |
| 3 | 16 | Jakes,James | Honda | Alternate |
| 4 | 1 | Hunter-Reay,Ryan | Chevy | Primary |
| 5 | 98 | Tagliani,Alex | Honda | Alternate |
| 6 | 55 | Vautier,Tristan(R) | Honda | Alternate |
| 7 | 14 | Sato,Takuma | Honda | Primary |
| 8 | 77 | Pagenaud,Simon | Honda | Primary |
| 9 | 12 | Power,Will | Chevy | Primary |
| 10 | 6 | Saavedra,Sebastian | Chevy | Alternate |
| 11 | 10 | Franchitti,Dario | Honda | Alternate |
| 12 | 3 | Castroneves,Helio | Chevy | Primary |
| 13 | 2 | Allmendinger,AJ | Chevy | Primary |
| 14 | 7 | Bourdais,Sebastien | Chevy | Primary |
| 15 | 9 | Dixon,Scott | Honda | Primary |
| 16 | 19 | Wilson,Justin | Honda | Primary |
| 17 | 78 | DeSilvestro,Simona | Chevy | Alternate |
| 18 | 25 | Andretti,Marco | Chevy | Primary |
| 19 | 11 | Kanaan,Tony | Chevy | Primary |
| 20 | 27 | Hinchcliffe,James | Chevy | Primary |
| 21 | 4 | Briscoe,Ryan | Chevy | Alternate |
| 22 | 20 | Carpenter,Ed | Chevy | Primary |
| 23 | 15 | Rahal,Graham | Honda | Primary |
| 24 | 67 | Newgarden,Josef | Honda | Primary |
| 25 | 83 | Kimball,Charlie | Honda | Primary |
(R) = Rookie