| Race details | |
|---|---|
| 7th and 8th round of the 2018 IndyCar Series season | |
 | |
| Date | June 2 and 3, 2018 |
| Official name | Chevrolet Detroit Grand Prix presented by Lear Corporation |
| Location | The Raceway on Belle Isle |
| Course | Temporary street circuit 2.350 mi / 3.782 km |
| Distance | 70 laps 164.500 mi / 264.737 km |
| Pole position | |
| Driver |  Marco Andretti (Andretti Herta Autosport with Curb-Agajanian) |
| Time | 1:14.8514 |
| Fastest lap | |
| Driver | Ryan Hunter-Reay (Andretti Autosport) |
| Time | 1:15.8049 (on lap 40 of 70) |
| Podium | |
| First |  Scott Dixon (Chip Ganassi Racing) |
| Second | Ryan Hunter-Reay (Andretti Autosport) |
| Third | Alexander Rossi (Andretti Autosport) |
| Pole position | |
| Driver | Alexander Rossi ( Andretti Autosport) |
| Time | 1:33.3143 |
| Fastest lap | |
| Driver | Ryan Hunter-Reay (Andretti Autosport) |
| Time | 1:15.0590 (on lap 59 of 70) |
| Podium | |
| First | Ryan Hunter-Reay (Andretti Autosport) |
| Second |  Will Power (Team Penske) |
| Third |  Ed Jones (Chip Ganassi Racing) |
The Chevrolet Detroit Grand Prix presented by Lear Corporation was the lone doubleheader event of the 2018 IndyCar Series season, consisting of the 7th and 8th rounds of the championship. The event was held at the Raceway at Belle Isle in Detroit, Michigan. Scott Dixon won Race 1, and Ryan Hunter-Reay won the Sunday race.
This event also marked the final IndyCar Series broadcast for ABC, ending a half-century stint covering the series (and its predecessors), as starting in 2019, NBC Sports was the series' only broadcaster. This would ultimately mark the end of Scott Goodyear's commentary career after 17 seasons with ESPN.