| Circuit | Autodromo Nazionale di Monza |
|---|---|
| Date | 1985-09-08 |
| Round | 12 |
| Pos | Driver | Team | Grid | Laps | Time/Status | Fastest Lap | Pts |
|---|---|---|---|---|---|---|---|
| 1 | Alain Prost | McLaren | 5 | 51 | 1:17:59.451 | — | 9 |
| 2 | Nelson Piquet | Brabham | 4 | 51 | +51.635 | — | 6 |
| 3 | Ayrton Senna | Team Lotus | 1 | 51 | +1:00.390 | — | 4 |
| 4 | Marc Surer | Brabham | 9 | 51 | +1:00.609 | — | 3 |
| 5 | Stefan Johansson | Ferrari | 10 | 50 | +1 Lap | — | 2 |
| 6 | Elio de Angelis | Team Lotus | 6 | 50 | +1 Lap | — | 1 |
| 7 | Patrick Tambay | Renault | 8 | 50 | +1 Lap | — | 0 |
| 8 | Martin Brundle | Tyrrell | 18 | 50 | +1 Lap | — | 0 |
| 9 | Thierry Boutsen | Arrows | 14 | 50 | +1 Lap | — | 0 |
| 10 | Philippe Streiff | Ligier | 19 | 49 | +2 Laps | — | 0 |
| 11 | Nigel Mansell | Williams | 3 | 47 | Engine | — | 0 |
| 12 | Teo Fabi | Toleman | 15 | 47 | +4 Laps | — | 0 |
| 13 | Michele Alboreto | Ferrari | 7 | 45 | Engine | — | 0 |
| 14 | Keke Rosberg | Williams | 2 | 44 | Engine | — | 0 |
| 15 | Jacques Laffite | Ligier | 20 | 40 | Engine | — | 0 |
| 16 | Niki Lauda | McLaren | 16 | 33 | Transmission | — | 0 |
| 17 | Riccardo Patrese | Alfa Romeo | 13 | 31 | Exhaust | — | 0 |
| 18 | Huub Rothengatter | Osella | 22 | 26 | Engine | — | 0 |
| 19 | Philippe Alliot | RAM | 26 | 19 | Turbo | — | 0 |
| 20 | Gerhard Berger | Arrows | 11 | 13 | Engine | — | 0 |
| 21 | Derek Warwick | Renault | 6 | 9 | Transmission | — | 0 |
| 22 | Alan Jones | Lola | 25 | 6 | Engine | — | 0 |
| 23 | Eddie Cheever | Alfa Romeo | 17 | 3 | Engine | — | 0 |
| 24 | Kenny Acheson | RAM | 24 | 2 | Clutch | — | 0 |
| 25 | Pierluigi Martini | Minardi | 23 | 0 | Fuel pump | — | 0 |
| 26 | Piercarlo Ghinzani | Toleman | 0 | 0 | Withdrew | — | 0 |