The 2018 IndyCar Grand Prix of Sonoma was Round 17 of the 2018 Verizon IndyCar Series. The event was held at Sonoma Raceway in California, United States on 16 September 2018. Ryan Hunter-Reay started on pole position and was the race winner.
INDYCAR GRAND PRIX OF SONOMA Race Result
| Pos. | No. | Driver | Chassis | Engine | Tire | Started | Laps | Total Time | Laps Led | Status | Points | Avg. Speed | Pit Stops |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 28 | Ryan Hunter-Reay | Dallara | Honda | Firestone | 1 | 85 | 02:02:19.1667 | 80 | Running | 104 | 99.44 | 3 |
| 2 | 9 | Scott Dixon | Dallara | Honda | Firestone | 2 | 85 | 02:02:21.9240 | - | Running | 80 | 99.403 | 3 |
| 3 | 12 | Will Power | Dallara | Chevrolet | Firestone | 7 | 85 | 02:02:22.8217 | 4 | Running | 71 | 99.391 | 3 |
| 4 | 22 | Simon Pagenaud | Dallara | Chevrolet | Firestone | 8 | 85 | 02:02:23.7973 | - | Running | 64 | 99.378 | 3 |
| 5 | 98 | Marco Andretti | Dallara | Honda | Firestone | 4 | 85 | 02:02:38.9697 | - | Running | 60 | 99.173 | 3 |
| 6 | 18 | Sebastien Bourdais | Dallara | Honda | Firestone | 11 | 85 | 02:02:40.8060 | - | Running | 56 | 99.148 | 3 |
| 7 | 27 | Alexander Rossi | Dallara | Honda | Firestone | 6 | 85 | 02:02:47.5445 | - | Running | 52 | 99.057 | 5 |
| 8 | 1 | Josef Newgarden | Dallara | Chevrolet | Firestone | 3 | 85 | 02:02:53.7955 | 1 | Running | 49 | 98.973 | 3 |
| 9 | 8 | Pato O'Ward | Dallara | Chevrolet | Firestone | 5 | 85 | 02:03:02.0329 | - | Running | 44 | 98.863 | 3 |
| 10 | 10 | Ed Jones | Dallara | Honda | Firestone | 14 | 85 | 02:03:03.3921 | - | Running | 40 | 98.845 | 3 |
| 11 | 39 | Santino Ferrucci | Dallara | Honda | Firestone | 20 | 85 | 02:03:03.7940 | - | Running | 38 | 98.839 | 4 |
| 12 | 14 | Tony Kanaan | Dallara | Chevrolet | Firestone | 18 | 85 | 02:03:19.5805 | - | Running | 36 | 98.629 | 3 |
| 13 | 20 | Jordan King | Dallara | Chevrolet | Firestone | 25 | 85 | 02:03:23.2304 | - | Running | 34 | 98.58 | 3 |
| 14 | 26 | Zach Veach | Dallara | Honda | Firestone | 10 | 85 | 02:03:24.6566 | - | Running | 32 | 98.561 | 4 |
| 15 | 5 | James Hinchcliffe | Dallara | Honda | Firestone | 15 | 85 | 02:03:31.9693 | - | Running | 30 | 98.464 | 3 |
| 16 | 19 | Pietro Fittipaldi | Dallara | Honda | Firestone | 13 | 85 | 02:03:33.4126 | - | Running | 28 | 98.445 | 3 |
| 17 | 60 | Jack Harvey | Dallara | Honda | Firestone | 16 | 85 | 02:03:34.8129 | - | Running | 26 | 98.426 | 3 |
| 18 | 6 | Carlos Munoz | Dallara | Honda | Firestone | 22 | 85 | 02:03:37.8012 | - | Running | 24 | 98.386 | 3 |
| 19 | 4 | Matheus Leist | Dallara | Chevrolet | Firestone | 23 | 85 | 02:03:41.5486 | - | Running | 22 | 98.337 | 4 |
| 20 | 88 | Colton Herta | Dallara | Chevrolet | Firestone | 19 | 85 | 02:03:42.6340 | - | Running | 20 | 98.322 | 3 |
| 21 | 59 | Max Chilton | Dallara | Chevrolet | Firestone | 21 | 84 | 02:03:39.2026 | - | Running | 18 | 97.21 | 3 |
| 22 | 23 | Charlie Kimball | Dallara | Chevrolet | Firestone | 24 | 76 | 02:03:43.5282 | - | Running | 16 | 87.901 | 4 |
| 23 | 15 | Graham Rahal | Dallara | Honda | Firestone | 9 | 66 | 01:56:31.5057 | - | Running | 14 | 81.052 | 3 |
| 24 | 21 | Spencer Pigot | Dallara | Chevrolet | Firestone | 17 | 38 | 01:06:12.9731 | - | Mechanical | 12 | 82.122 | 3 |
| 25 | 30 | Takuma Sato | Dallara | Honda | Firestone | 12 | 15 | 00:24:21.1286 | - | Mechanical | 10 | 88.144 | 1 |