Australian Grand Prix support race
This race was a support event at the 1984 Australian Grand Prix meeting. The race, called the "Diners Club International Trophy Race" was open to both Group C and the new Group A touring cars and was won for the second year running by Nissan driver George Fury driving his Bluebird Turbo. For the second year in a row Peter Brock finished second in his HDT Commodore (his only loss in 4 races in the #05 Group C VK), with Warren Cullen third in his K-Mart sponsored Commodore. In a sign of things to come in 1985, Jim Richards was the winner of the Group A class in his JPS Team BMW 635 CSi.
This was the last ever competitive touring car race on the Australian mainland for the locally developed Group C cars. In late 1984 there was a race held for the Group C cars at the Baskerville Raceway in Tasmania where reportedly only six cars were in attendance. The Baskerville race was won by Allan Grice in his Roadways Racing VK Commodore.
| Pos. | Driver | No. | Team | Car |
|---|---|---|---|---|
| 1 |  George Fury | 15 | Nissan Motor Co | Nissan Bluebird Turbo |
| 2 | Peter Brock | 05 | Marlboro Holden Dealer Team | Holden VK Commodore |
| 3 | Warren Cullen | 8 | K-Mart Auto Racing | Holden VK Commodore |
| 4 | John Harvey | 25 | Marlboro Holden Dealer Team | Holden VK Commodore |
| 5 | Steve Masterton | 2 | Masterton Homes Pty. Ltd. | Ford XE Falcon |
| 6 | Andrew Harris | 9 | K-Mart Auto Racing | Holden VH Commodore SS |
| 7 | Murray Carter | 18 | Murray Carter | Mazda RX-7 |
| DNF | Peter McLeod | 50 | Slick 50 Racing | Mazda RX-7 |