Autodromo Nazionale di Monza · 8 September 1985
Alain Prost won the 1985 Italian Grand Prix for McLaren from 5th on the grid, 51.635s ahead of Nelson Piquet. Martin Brundle gained the most places, from 18th on the grid to 8th.
| Pos | Team | Points Breakdown | Pts | |
|---|---|---|---|---|
| 1 | McLaren Prost 9 + Lauda 0 | Prost 9 + Lauda 0 | 9 | |
| 2 | Brabham Piquet 6 + Surer 3 | Piquet 6 + Surer 3 | 9 | |
| 3 | Team Lotus Senna 4 + de Angelis 1 | Senna 4 + de Angelis 1 | 5 | |
| 4 | Ferrari Johansson 2 + Alboreto 0 | Johansson 2 + Alboreto 0 | 2 | |
| 5 | Renault Tambay 0 + Warwick 0 | Tambay 0 + Warwick 0 | 0 | |
| 6 | Tyrrell Brundle 0 | Brundle 0 | 0 | |
| 7 | Arrows Boutsen 0 + Berger 0 | Boutsen 0 + Berger 0 | 0 | |
| 8 | Ligier Streiff 0 + Laffite 0 | Streiff 0 + Laffite 0 | 0 | |
| 9 | Williams Mansell 0 + Rosberg 0 | Mansell 0 + Rosberg 0 | 0 | |
| 10 | Toleman Fabi 0 + Ghinzani 0 | Fabi 0 + Ghinzani 0 | 0 | |
| 11 | Alfa Romeo Patrese 0 + Cheever 0 | Patrese 0 + Cheever 0 | 0 | |
| 12 | Osella Rothengatter 0 | Rothengatter 0 | 0 | |
| 13 | RAM Alliot 0 + Acheson 0 | Alliot 0 + Acheson 0 | 0 | |
| 14 | Lola Jones 0 | Jones 0 | 0 | |
| 15 | Minardi Martini 0 | Martini 0 | 0 |
| Pos | Driver | Team | Race time / Gap | Laps | Stops | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Alain Prost McLaren | McLaren | 1:17:59.451 | 51 | — | 9 | |
| 2 | Nelson Piquet Brabham | Brabham | +51.635s | 51 | — | 6 | |
| 3 | Ayrton Senna Team Lotus | Team Lotus | +1:00.390 | 51 | — | 4 | |
| 4 | Marc Surer Brabham | Brabham | +1:00.609 | 51 | — | 3 | |
| 5 | Stefan Johansson Ferrari | Ferrari | +1 Lap | 50 | — | 2 | |
| 6 | Elio de Angelis Team Lotus | Team Lotus | +1 Lap | 50 | — | 1 | |
| 7 | Patrick Tambay Renault | Renault | +1 Lap | 50 | — | — | |
| 8 | Martin Brundle Tyrrell | Tyrrell | +1 Lap | 50 | — | — | |
| 9 | Thierry Boutsen Arrows | Arrows | +1 Lap | 50 | — | — | |
| 10 | Philippe Streiff Ligier | Ligier | +2 Laps | 49 | — | — | |
| 11 | Nigel Mansell Williams | Williams | DNF Engine | 47 | — | — | |
| 12 | Teo Fabi Toleman | Toleman | +4 Laps | 47 | — | — | |
| 13 | Michele Alboreto Ferrari | Ferrari | DNF Engine | 45 | — | — | |
| DNF | Keke Rosberg Williams | Williams | DNF Engine | 44 | — | — | |
| DNF | Jacques Laffite Ligier | Ligier | DNF Engine | 40 | — | — | |
| DNF | Niki Lauda McLaren | McLaren | DNF Transmission | 33 | — | — | |
| DNF | Riccardo Patrese Alfa Romeo | Alfa Romeo | DNF Exhaust | 31 | — | — | |
| DNF | Huub Rothengatter Osella | Osella | DNF Engine | 26 | — | — | |
| DNF | Philippe Alliot RAM | RAM | DNF Turbo | 19 | — | — | |
| DNF | Gerhard Berger Arrows | Arrows | DNF Engine | 13 | — | — | |
| DNF | Derek Warwick Renault | Renault | DNF Transmission | 9 | — | — | |
| DNF | Alan Jones Lola | Lola | DNF Engine | 6 | — | — | |
| DNF | Eddie Cheever Alfa Romeo | Alfa Romeo | DNF Engine | 3 | — | — | |
| DNF | Kenny Acheson RAM | RAM | DNF Clutch | 2 | — | — | |
| DNF | Pierluigi Martini Minardi | Minardi | DNF Fuel pump | 0 | — | — | |
| DNS | Piercarlo Ghinzani Toleman | Toleman | DNS Withdrew | 0 | — | — |