Autodromo Nazionale di Monza · 8 September 1991
| Pos | Team | Points Breakdown | Pts | |
|---|---|---|---|---|
| 1 | Williams Mansell 10 + Patrese 0 | Mansell 10 + Patrese 0 | 10 | |
| 2 | McLaren Senna 6 + Berger 3 | Senna 6 + Berger 3 | 9 | |
| 3 | Ferrari Prost 4 + Alesi 0 | Prost 4 + Alesi 0 | 4 | |
| 4 | Benetton Schumacher 2 + Piquet 1 | Schumacher 2 + Piquet 1 | 3 | |
| 5 | Jordan Cesaris 0 + Moreno 0 | Cesaris 0 + Moreno 0 | 0 | |
| 6 | Leyton House Capelli 0 + Gugelmin 0 | Capelli 0 + Gugelmin 0 | 0 | |
| 7 | Minardi Morbidelli 0 + Martini 0 | Morbidelli 0 + Martini 0 | 0 | |
| 8 | Dallara Pirro 0 + Järvilehto 0 | Pirro 0 + Järvilehto 0 | 0 | |
| 9 | Ligier Comas 0 + Boutsen 0 | Comas 0 + Boutsen 0 | 0 | |
| 10 | Brabham Blundell 0 + Brundle 0 | Blundell 0 + Brundle 0 | 0 | |
| 11 | Team Lotus Häkkinen 0 | Häkkinen 0 | 0 | |
| 12 | Lambo Larini 0 | Larini 0 | 0 | |
| 13 | Fondmetal Grouillard 0 | Grouillard 0 | 0 | |
| 14 | Tyrrell Modena 0 + Nakajima 0 | Modena 0 + Nakajima 0 | 0 | |
| 15 | Lola Bernard 0 | Bernard 0 | 0 |
| Pos | Driver | Team | Race time / Gap | Laps | Stops | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Nigel Mansell Williams | Williams | 1:17:54.319 | 53 | — | 10 | |
| 2 | Ayrton Senna McLaren | McLaren | +16.262s | 53 | — | 6 | |
| 3 | Alain Prost Ferrari | Ferrari | +16.829s | 53 | — | 4 | |
| 4 | Gerhard Berger McLaren | McLaren | +27.719s | 53 | — | 3 | |
| 5 | Michael Schumacher Benetton | Benetton | +34.463s | 53 | — | 2 | |
| 6 | Nelson Piquet Benetton | Benetton | +45.600s | 53 | — | 1 | |
| 7 | Andrea de Cesaris Jordan | Jordan | +51.136s | 53 | — | — | |
| 8 | Ivan Capelli Leyton House | Leyton House | +1:15.019 | 53 | — | — | |
| 9 | Gianni Morbidelli Minardi | Minardi | +1 Lap | 52 | — | — | |
| 10 | Emanuele Pirro Dallara | Dallara | +1 Lap | 52 | — | — | |
| 11 | Érik Comas Ligier | Ligier | +1 Lap | 52 | — | — | |
| 12 | Mark Blundell Brabham | Brabham | +1 Lap | 52 | — | — | |
| 13 | Martin Brundle Brabham | Brabham | +1 Lap | 52 | — | — | |
| 14 | Mika Häkkinen Team Lotus | Team Lotus | +4 Laps | 49 | — | — | |
| 15 | Maurício Gugelmin Leyton House | Leyton House | +4 Laps | 49 | — | — | |
| 16 | Nicola Larini Lambo | Lambo | +5 Laps | 48 | — | — | |
| 17 | Olivier Grouillard Fondmetal | Fondmetal | DNF Engine | 46 | — | — | |
| 18 | Jyrki Järvilehto Dallara | Dallara | DNF Overheating | 35 | — | — | |
| 19 | Stefano Modena Tyrrell | Tyrrell | DNF Engine | 32 | — | — | |
| 20 | Jean Alesi Ferrari | Ferrari | DNF Engine | 29 | — | — | |
| 21 | Riccardo Patrese Williams | Williams | DNF Gearbox | 27 | — | — | |
| 22 | Satoru Nakajima Tyrrell | Tyrrell | DNF Throttle | 24 | — | — | |
| 23 | Éric Bernard Lola | Lola | DNF Engine | 21 | — | — | |
| 24 | Pierluigi Martini Minardi | Minardi | DNF Spun off | 8 | — | — | |
| 25 | Roberto Moreno Jordan | Jordan | DNF Spun off | 2 | — | — | |
| 26 | Thierry Boutsen Ligier | Ligier | DNF Spun off | 1 | — | — |