The 2005 Argent Mortage Indy Grand Prix was Round 14 of the 2005 IndyCar Series. The event was held at Sonoma Raceway in California, United States on 28 August 2005. Ryan Briscoe started on pole position and Tony Kanaan was the race winner.
ARGENT MORTGAGE INDY GRAND PRIX Race Result
| Pos. | No. | Driver | Chassis | Engine | Tire | Started | Laps | Total Time | Laps Led | Status | Points | Avg. Speed | Pit Stops |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 11 | Tony Kanaan | Dallara | Honda | Firestone | 3 | 80 | - | 33 | Running | 53 | 91.04 | - |
| 2 | 15 | Buddy Rice | Panoz | Honda | Firestone | 6 | 80 | - | 0 | Running | 40 | - | - |
| 3 | 51 | Alex Barron | Dallara | Toyota | Firestone | 10 | 80 | - | 0 | Running | 35 | - | - |
| 4 | 83 | Patrick Carpentier | Dallara | Toyota | Firestone | 12 | 80 | - | 0 | Running | 32 | - | - |
| 5 | 2 | Tomas Enge | Dallara | Chevrolet | Firestone | 4 | 80 | - | 13 | Running | 30 | - | - |
| 6 | 55 | Kosuke Matsuura | Panoz | Honda | Firestone | 15 | 80 | - | 0 | Running | 28 | - | - |
| 7 | 9 | Scott Dixon | Panoz | Toyota | Firestone | 9 | 80 | - | 0 | Running | 26 | - | - |
| 8 | 27 | Dario Franchitti | Dallara | Honda | Firestone | 21 | 80 | - | 0 | Running | 24 | - | - |
| 9 | 17 | Vitor Meira | Panoz | Honda | Firestone | 11 | 80 | - | 0 | Running | 22 | - | - |
| 10 | 14 | Jeff Bucknum | Dallara | Chevrolet | Firestone | 17 | 80 | - | 0 | Running | 20 | - | - |
| 11 | 24 | Roger Yasukawa | Dallara | Honda | Firestone | 18 | 80 | - | 0 | Running | 19 | - | - |
| 12 | 8 | Scott Sharp | Panoz | Honda | Firestone | 19 | 80 | - | 0 | Running | 18 | - | - |
| 13 | 7 | Bryan Herta | Dallara | Honda | Firestone | 8 | 79 | - | 17 | Running | 17 | - | - |
| 14 | 10 | Giorgio Pantano | Panoz | Toyota | Firestone | 13 | 78 | - | 0 | Off Track | 16 | - | - |
| 15 | 20 | Ed Carpenter | Dallara | Toyota | Firestone | 20 | 77 | - | 0 | Running | 15 | - | - |
| 16 | 4 | Tomas Scheckter | Dallara | Chevrolet | Firestone | 14 | 57 | - | 0 | Suspension | 14 | - | - |
| 17 | 6 | Sam Hornish Jr. | Dallara | Toyota | Firestone | 5 | 56 | - | 0 | Running | 13 | - | - |
| 18 | 26 | Dan Wheldon | Dallara | Honda | Firestone | 7 | 52 | - | 1 | Mechanical | 12 | - | - |
| 19 | 33 | Ryan Briscoe | Panoz | Toyota | Firestone | 1 | 20 | - | 16 | Accident | 12 | - | - |
| 20 | 16 | Danica Patrick | Panoz | Honda | Firestone | 16 | 19 | - | 0 | Accident | 12 | - | - |
| 21 | 3 | Helio Castroneves | Dallara | Toyota | Firestone | 2 | 19 | - | 0 | Accident | 12 | - | - |