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]

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

Pos	Grid	No.	Driver	Team	Engine	Laps	Time/Retired	Pit Stops	Laps Led	Pts.1
1	4	12	Will Power	Team Penske	Chevrolet	248	1:59:30.1972	4	93	51
2	2	27	Alexander Rossi	Andretti Autosport	Honda	248	+1.3117	3	4	41
3	1	9	Scott Dixon	Chip Ganassi Racing	Honda	248	+2.8092	4	145	38
4	6	22	Simon Pagenaud	Team Penske	Chevrolet	248	+3.1336	4		32
5	16	26	Zach Veach R	Andretti Autosport	Honda	248	+7.2693	4	2	31
6	14	21	Spencer Pigot	Ed Carpenter Racing	Chevrolet	248	+10.5509	4		28
7	3	1	Josef Newgarden W	Team Penske	Chevrolet	248	+10.6003	4		26
8	12	10	Ed Jones	Chip Ganassi Racing	Honda	248	+22.1362	4		24
9	13	30	Takuma Sato	Rahal Letterman Lanigan Racing	Honda	247	+1 lap	3	4	23
10	7	15	Graham Rahal	Rahal Letterman Lanigan Racing	Honda	247	+1 lap	3		20
11	21	19	Pietro Fittipaldi R	Dale Coyne Racing	Honda	247	+1 lap	4		19
12	11	20	Ed Carpenter	Ed Carpenter Racing	Chevrolet	247	+1 lap	4		18
13	10	98	Marco Andretti	Andretti Herta Autosport with Curb-Agajanian	Honda	246	+2 laps	4		17
14	18	4	Matheus Leist R	A. J. Foyt Enterprises	Chevrolet	246	+2 laps	4		16
15	15	14	Tony Kanaan	A. J. Foyt Enterprises	Chevrolet	246	+2 laps	4		15
16	8	5	James Hinchcliffe	Schmidt Peterson Motorsports	Honda	246	+2 laps	5		14
17	20	59	Max Chilton	Carlin	Chevrolet	244	+4 laps	5		13
18	19	88	Gabby Chaves	Harding Racing	Chevrolet	242	+6 laps	6		12
19	17	23	Charlie Kimball	Carlin	Chevrolet	235	+13 laps	6		11
20	5	28	Ryan Hunter-Reay	Andretti Autosport	Honda	172	Mechanical	2		10
21	9	18	Sébastien Bourdais	Dale Coyne Racing with Vasser-Sullivan	Honda	0	Contact	0		9
OFFICIAL BOX SCORE

Notes

¹ 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.

Drivers' Championship standings Pos Driver Points 1 Scott Dixon 568 2 Alexander Rossi 542 1 3 Will Power 500 1 4 Josef Newgarden 490 5 Ryan Hunter-Reay 421

Manufacturer standings Pos Manufacturer Points 1 Honda 1,276 2 Chevrolet 1,075

• Note: Only the top five positions are included.