The 2003 Firestone Indy 400 was Round 10 of the 2003 IndyCar Series. The event was held at Michigan International Speedway in Michigan, United States on 27 July 2003. Tomas Scheckter started on pole position and Alex Barron was the race winner.
FIRESTONE INDY 400 Race Result
| Pos. | No. | Driver | Chassis | Engine | Tire | Started | Laps | Total Time | Laps Led | Status | Points | Avg. Speed | Pit Stops |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 21 | Alex Barron | G-Force | Toyota | Firestone | 6 | 200 | - | 24 | Running | 50 | 180.917 | - |
| 2 | 4 | Sam Hornish Jr. | Dallara | Chevrolet | Firestone | 4 | 200 | - | 126 | Running | 42 | - | - |
| 3 | 10 | Tomas Scheckter | G-Force | Toyota | Firestone | 1 | 200 | - | 42 | Running | 35 | - | - |
| 4 | 8 | Scott Sharp | Dallara | Toyota | Firestone | 10 | 200 | - | 0 | Running | 32 | - | - |
| 5 | 9 | Scott Dixon | G-Force | Toyota | Firestone | 2 | 200 | - | 3 | Running | 30 | - | - |
| 6 | 12 | Tora Takagi | G-Force | Toyota | Firestone | 11 | 200 | - | 0 | Running | 28 | - | - |
| 7 | 6 | Gil de Ferran | Dallara | Toyota | Firestone | 9 | 200 | - | 0 | Running | 26 | - | - |
| 8 | 55 | Roger Yasukawa | Dallara | Honda | Firestone | 12 | 200 | - | 0 | Running | 24 | - | - |
| 9 | 31 | Al Unser Jr. | Dallara | Toyota | Firestone | 5 | 200 | - | 4 | Running | 22 | - | - |
| 10 | 13 | Greg Ray | G-Force | Honda | Firestone | 7 | 199 | - | 0 | Running | 20 | - | - |
| 11 | 52 | Buddy Rice | Dallara | Chevrolet | Firestone | 18 | 198 | - | 0 | Running | 19 | - | - |
| 12 | 91 | Buddy Lazier | Dallara | Chevrolet | Firestone | 21 | 196 | - | 0 | Running | 18 | - | - |
| 13 | 24 | Robbie Buhl | Dallara | Chevrolet | Firestone | 19 | 196 | - | 0 | Running | 17 | - | - |
| 14 | 14 | A.J. Foyt IV | G-Force | Toyota | Firestone | 16 | 179 | - | 0 | Gearbox | 16 | - | - |
| 15 | 23 | Sarah Fisher | Dallara | Chevrolet | Firestone | 20 | 167 | - | 0 | Clutch | 15 | - | - |
| 16 | 11 | Tony Kanaan | Dallara | Honda | Firestone | 15 | 160 | - | 1 | Engine | 14 | - | - |
| 17 | 3 | Helio Castroneves | Dallara | Toyota | Firestone | 3 | 70 | - | 0 | Radiator | 13 | - | - |
| 18 | 15 | Kenny Brack | Dallara | Honda | Firestone | 8 | 64 | - | 0 | Accident | 12 | - | - |
| 19 | 27 | Bryan Herta | Dallara | Honda | Firestone | 14 | 37 | - | 0 | Electrical | 11 | - | - |
| 20 | 26 | Dan Wheldon | Dallara | Honda | Firestone | 13 | 19 | - | 0 | Engine | 10 | - | - |
| 21 | 2 | Vitor Meira | Dallara | Chevrolet | Firestone | 17 | 16 | - | 0 | Fuel Leak | 9 | - | - |