The 2018 Bommarito Automotive Group 500 Presented by Valvoline was the 15th round of the 2018 IndyCar Series season. The race was held on August 26 at Gateway Motorsports Park in Madison, Illinois, just east of St. Louis, Missouri. 2017 Indy 500 pole winner Scott Dixon qualified on pole position after qualifying was canceled due to rain,[1] while 2018 Indy 500 champion Will Power took victory in the 248-lap race.[2]
| Key | Meaning | |
|---|---|---|
| R | Rookie | |
| W | Past winner |
Qualifying was canceled due to rain, so the race grid is based on entrant point standings.
| Pos | No. | Name | Points | |
|---|---|---|---|---|
| 1 | 9 |  Scott Dixon | 530 | |
| 2 | 27 |  Alexander Rossi | 501 | |
| 3 | 1 | Josef Newgarden W | 464 | |
| 4 | 12 |  Will Power | 449 | |
| 5 | 28 | Ryan Hunter-Reay | 411 | |
| 6 | 22 |  Simon Pagenaud | 368 | |
| 7 | 15 | Graham Rahal | 351 | |
| 8 | 5 |  James Hinchcliffe | 338 | |
| 9 | 18 | Sébastien Bourdais | 325 | |
| 10 | 98 | Marco Andretti | 311 | |
| 11 | 20 | Ed Carpenter | 295 | |
| 12 | 10 | Ed Jones | 273 | |
| 13 | 30 |  Takuma Sato | 267 | |
| 14 | 21 | Spencer Pigot | 253 | |
| 15 | 14 |  Tony Kanaan | 240 | |
| 16 | 26 | Zach Veach R | 239 | |
| 17 | 23 | Charlie Kimball | 234 | |
| 18 | 4 | Matheus Leist R | 201 | |
| 19 | 88 |  Gabby Chaves | 198 | |
| 20 | 59 |  Max Chilton | 179 | |
| 21 | 19 | Pietro Fittipaldi R | 162 | |
| OFFICIAL BOX SCORE | ||||
Points include 1 point for leading at least 1 lap during a race, an additional 2 points for leading the most race laps, and 1 point for Pole Position.
| Pos | Driver | Points | ||
|---|---|---|---|---|
| 1 | 568 | |||
| 2 | Alexander Rossi | 542 | ||
| 1 | 3 | Will Power | 500 | |
| 1 | 4 | Josef Newgarden | 490 | |
| 5 | Ryan Hunter-Reay | 421 |
| Pos | Manufacturer | Points | ||
|---|---|---|---|---|
| 1 | Honda | 1,276 | ||
| 2 | Chevrolet | 1,075 |