Race Result
| GP n. 416 - 08/09/1985 - Grand Prix of Italy Autodromo Nationale di Monza |
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| Winner: | Alain Prost / McLaren-TAG - 1:17'59.451 | ||||||
| Pole Position: | Ayrton Senna / Lotus-Renault - 1:25.084 | ||||||
| Fastest Lap: | Nigel Mansell / Williams-Honda - 1:28.283 | ||||||
| Pos | Nš | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| 1 | 2 |  Alain Prost |
McLaren-TAG | 51 | 1:17'59.451 | 5 | 9 |
| 2 | 7 |  Nelson Piquet |
Brabham-BMW | 51 | +51.635 | 4 | 6 |
| 3 | 12 | Ayrton Senna |
Lotus-Renault | 51 | + 1'00.390 | 1 | 4 |
| 4 | 8 |  Marc Surer |
Brabham-BMW | 51 | + 1'00.609 | 9 | 3 |
| 5 | 28 |  Stefan Johansson |
Ferrari | 50 | + 1 lap | 10 | 2 |
| 6 | 11 |  Elio de Angelis |
Lotus-Renault | 50 | + 1 lap | 6 | 1 |
| 7 | 15 | Patrick Tambay |
Renault | 50 | + 1 lap | 8 | 0 |
| 8 | 3 |  Martin Brundle |
Tyrrell-Renault | 50 | + 1 lap | 18 | 0 |
| 9 | 18 |  Thierry Boutsen |
Arrows-BMW | 50 | + 1 lap | 14 | 0 |
| 10 | 25 | Philippe Streiff |
Ligier-Renault | 49 | + 2 laps | 19 | 0 |
| 11 | 5 | Nigel Mansell |
Williams-Honda | 47 | engine | 3 | 0 |
| 12 | 19 | Teo Fabi |
Toleman-Hart | 47 | + 4 laps | 15 | 0 |
| 13 | 27 | Michele Alboreto |
Ferrari | 45 | engine | 7 | 0 |
| Ret | 6 |  Keke Rosberg |
Williams-Honda | 44 | engine | 2 | 0 |
| Ret | 26 | Jacques Laffite |
Ligier-Renault | 40 | engine | 20 | 0 |
| Ret | 1 |  Niki Lauda |
McLaren-TAG | 33 | transmission | 16 | 0 |
| Ret | 22 | Riccardo Patrese |
Alfa Romeo | 31 | exhaust | 13 | 0 |
| Ret | 24 |  Huub Rothengatter |
Osella-Alfa Romeo | 26 | engine | 22 | 0 |
| Ret | 9 | Philippe Alliot |
RAM-Hart | 19 | turbo | 26 | 0 |
| Ret | 17 | Gerhard Berger |
Arrows-BMW | 13 | engine | 11 | 0 |
| Ret | 16 | Derek Warwick |
Renault | 9 | transmission | 12 | 0 |
| Ret | 33 |  Alan Jones |
Lola-Hart | 6 | engine | 25 | 0 |
| Ret | 23 |  Eddie Cheever |
Alfa Romeo | 3 | engine | 17 | 0 |
| Ret | 10 | Kenny Acheson |
RAM-Hart | 2 | clutch | 24 | 0 |
| Ret | 29 | Pierluigi Martini |
Minardi-Motori Moderni | 0 | fuel pump | 23 | 0 |
| Dns | 20 | Piercarlo Ghinzani |
Toleman-Hart | did not start | 21 | 0 | |