| Race details | |
|---|---|
| Race 12 of 13 in the 2005 Champ Car season | |
 Track map of the Surfers Paradise street circuit at Surfers Paradise, Australia. | |
| Date | 22 October, 2005 |
| Official name | 2005 Lexmark Indy 300 |
| Location | Surfers Paradise Street Circuit Queensland, Australia |
| Course | Temporary Street Circuit 2.795 mi / 4.498 km |
| Distance | 57 laps 159.315 mi / 256.386 km |
| Weather | Warm with temperatures reaching up to 31.8 °C (89.2 °F) |
| Pole position | |
| Driver | Oriol Servià (Newman/Haas Racing) |
| Time | 1:32.616 |
| Fastest lap | |
| Driver | Sébastien Bourdais (Newman/Haas Racing) |
| Time | 1:32.063 (on lap 39 of 57) |
| Podium | |
| First | Sébastien Bourdais (Newman/Haas Racing) |
| Second | A. J. Allmendinger (RuSPORT) |
| Third | Jimmy Vasser (PKV Racing) |
The 2005 Lexmark Indy 300 was the twelfth and penultimate round of the 2005 Bridgestone Presents the Champ Car World Series Powered by Ford season, held on 22 October 2005 on the Surfers Paradise Street Circuit, Queensland, Australia. Sébastien Bourdais won the race and also clinched his second consecutive Champ Car championship. Oriol Servià earned his first and to date only pole position in his career. The race also marked the final career podium for 1996 CART champion Jimmy Vasser, who finished third running for his co-owned team PKV Racing.