Gran Premio di San Marino 1991
| Pos | No | Driver | Constructor | Laps | Time / Gap | Pts | Grid | |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | Ayrton Senna | McLaren | 61 | 1:35:14.750 | 10 | 1 | Pole |
| 2 | 2 | Gerhard Berger | McLaren | 61 | 1:35:16.425 | 6 | 5 | FL |
| 3 | 22 | JJ Lehto | Dallara | 60 | +1 lap | 4 | 16 | |
| 4 | 23 | Pierluigi Martini | Minardi | 59 | +2 laps | 3 | 9 | |
| 5 | 11 | Mika Häkkinen | Lotus | 58 | +3 laps | 2 | 25 | |
| 6 | 12 | Julian Bailey | Lotus | 58 | +3 laps | 1 | 26 | |
| 7 | 25 | Thierry Boutsen | Ligier | 58 | +3 laps | — | 24 | |
| 8 | 8 | Mark Blundell | Brabham | 58 | +3 laps | — | 23 | |
| 9 | 35 | Eric van de Poele | Modena | 57 | Fuel pump | — | 21 | |
| 10 | 26 | Érik Comas | Ligier | 57 | +4 laps | — | 19 | |
| 11 | 7 | Martin Brundle | Brabham | 57 | +4 laps | — | 18 | |
| 12 | 15 | Maurício Gugelmin | Leyton House | 55 | Engine | — | 15 | |
| 13 | 19 | Roberto Moreno | Benetton | 54 | Gearbox | — | 13 | |
| DNF | 4 | Stefano Modena | Tyrrell | 41 | Transmission | — | 6 | |
| DNF | 33 | Andrea de Cesaris | Jordan | 37 | Gearbox | — | 11 | |
| DNF | 32 | Bertrand Gachot | Jordan | 37 | Suspension | — | 12 | |
| DNF | 16 | Ivan Capelli | Leyton House | 24 | Spun off | — | 22 | |
| DNF | 29 | Éric Bernard | Lola | 17 | Engine | — | 17 | |
| DNF | 6 | Riccardo Patrese | Williams | 17 | Electrical | — | 2 | |
| DNF | 3 | Satoru Nakajima | Tyrrell | 15 | Transmission | — | 10 | |
| DNF | 24 | Gianni Morbidelli | Minardi | 10 | Gearbox | — | 8 | |
| DNF | 28 | Jean Alesi | Ferrari | 2 | Spun off | — | 7 | |
| DNF | 30 | Aguri Suzuki | Lola | 2 | Spun off | — | 20 | |
| DNF | 20 | Nelson Piquet | Benetton | 1 | Spun off | — | 14 | |
| DNF | 5 | Nigel Mansell | Williams | 0 | Collision | — | 4 | |
| DNS | 27 | Alain Prost | Ferrari | — | Spun off | — | 3 | |
| DNQ | 17 | Gabriele Tarquini | AGS | — | — | — | — | |
| DNQ | 18 | Fabrizio Barbazza | AGS | — | — | — | — | |
| DNQ | 10 | Alex Caffi | Footwork | — | — | — | — | |
| DNQ | 9 | Michele Alboreto | Footwork | — | — | — | — | |
| DNPQ | 21 | Emanuele Pirro | Dallara | — | — | — | — | |
| DNPQ | 14 | Olivier Grouillard | Fondmetal | — | — | — | — | |
| DNPQ | 34 | Nicola Larini | Modena | — | — | — | — | |
| DNPQ | 31 | Pedro Chaves | Coloni | — | — | — | — |
| Pos | Driver | Constructor | Q1 | Q2 | Q3 | Time |
|---|---|---|---|---|---|---|
| 1 | Ayrton Senna | McLaren | — | — | — | 1:21.877 |
| 2 | Riccardo Patrese | Williams | — | — | — | 1:21.957 |
| 3 | Alain Prost | Ferrari | — | — | — | 1:22.195 |
| 4 | Nigel Mansell | Williams | — | — | — | 1:22.366 |
| 5 | Gerhard Berger | McLaren | — | — | — | 1:22.567 |
| 6 | Stefano Modena | Tyrrell | — | — | — | 1:23.511 |
| 7 | Jean Alesi | Ferrari | — | — | — | 1:23.945 |
| 8 | Gianni Morbidelli | Minardi | — | — | — | 1:24.762 |
| 9 | Pierluigi Martini | Minardi | — | — | — | 1:24.807 |
| 10 | Satoru Nakajima | Tyrrell | — | — | — | 1:25.345 |
| 11 | Andrea de Cesaris | Jordan | — | — | — | 1:25.491 |
| 12 | Bertrand Gachot | Jordan | — | — | — | 1:25.531 |
| 13 | Roberto Moreno | Benetton | — | — | — | 1:25.655 |
| 14 | Nelson Piquet | Benetton | — | — | — | 1:25.809 |
| 15 | Maurício Gugelmin | Leyton House | — | — | — | 1:25.841 |
| 16 | JJ Lehto | Dallara | — | — | — | 1:25.974 |
| 17 | Éric Bernard | Lola | — | — | — | 1:25.983 |
| 18 | Martin Brundle | Brabham | — | — | — | 1:26.055 |
| 19 | Érik Comas | Ligier | — | — | — | 1:26.207 |
| 20 | Aguri Suzuki | Lola | — | — | — | 1:26.356 |
| 21 | Eric van de Poele | Modena | — | — | — | 1:26.550 |
| 22 | Ivan Capelli | Leyton House | — | — | — | 1:26.602 |
| 23 | Mark Blundell | Brabham | — | — | — | 1:26.778 |
| 24 | Thierry Boutsen | Ligier | — | — | — | 1:26.998 |
| 25 | Mika Häkkinen | Lotus | — | — | — | 1:27.324 |
| 26 | Julian Bailey | Lotus | — | — | — | 1:27.976 |
| 27 | Gabriele Tarquini | AGS | — | — | — | 1:28.175 |
| 28 | Fabrizio Barbazza | AGS | — | — | — | 1:29.665 |
| 29 | Alex Caffi | Footwork | — | — | — | 1:30.280 |
| 30 | Michele Alboreto | Footwork | — | — | — | 1:30.762 |
| Grid | Driver | Constructor | Quali | Penalty |
|---|---|---|---|---|
| 1 | Ayrton Senna | McLaren | 1 | — |
| 2 | Riccardo Patrese | Williams | 2 | — |
| 3 | Alain Prost | Ferrari | 3 | — |
| 4 | Nigel Mansell | Williams | 4 | — |
| 5 | Gerhard Berger | McLaren | 5 | — |
| 6 | Stefano Modena | Tyrrell | 6 | — |
| 7 | Jean Alesi | Ferrari | 7 | — |
| 8 | Gianni Morbidelli | Minardi | 8 | — |
| 9 | Pierluigi Martini | Minardi | 9 | — |
| 10 | Satoru Nakajima | Tyrrell | 10 | — |
| 11 | Andrea de Cesaris | Jordan | 11 | — |
| 12 | Bertrand Gachot | Jordan | 12 | — |
| 13 | Roberto Moreno | Benetton | 13 | — |
| 14 | Nelson Piquet | Benetton | 14 | — |
| 15 | Maurício Gugelmin | Leyton House | 15 | — |
| 16 | JJ Lehto | Dallara | 16 | — |
| 17 | Éric Bernard | Lola | 17 | — |
| 18 | Martin Brundle | Brabham | 18 | — |
| 19 | Érik Comas | Ligier | 19 | — |
| 20 | Aguri Suzuki | Lola | 20 | — |
| 21 | Eric van de Poele | Modena | 21 | — |
| 22 | Ivan Capelli | Leyton House | 22 | — |
| 23 | Mark Blundell | Brabham | 23 | — |
| 24 | Thierry Boutsen | Ligier | 24 | — |
| 25 | Mika Häkkinen | Lotus | 25 | — |
| 26 | Julian Bailey | Lotus | 26 | — |
| # | Driver | Constructor | Lap | Time | Gap |
|---|---|---|---|---|---|
| 1 | Gerhard Berger | McLaren | 55 | 1:26.531 | — |
| 2 | Ayrton Senna | McLaren | 47 | 1:27.168 | +0.637 |
| 3 | Roberto Moreno | Benetton | 44 | 1:28.423 | +1.892 |
| 4 | Riccardo Patrese | Williams | 16 | 1:28.776 | +2.245 |
| 5 | Stefano Modena | Tyrrell | 40 | 1:28.906 | +2.375 |
| 6 | JJ Lehto | Dallara | 40 | 1:29.091 | +2.560 |
| 7 | Thierry Boutsen | Ligier | 48 | 1:29.368 | +2.837 |
| 8 | Julian Bailey | Lotus | 58 | 1:29.968 | +3.437 |
| 9 | Martin Brundle | Brabham | 50 | 1:30.115 | +3.584 |
| 10 | Maurício Gugelmin | Leyton House | 46 | 1:30.422 | +3.891 |
Drivers after race
| Pos | Driver | Pts |
|---|---|---|
| 1 | Ayrton Senna | 30 |
| 2 | Gerhard Berger | 10 |
| 3 | Alain Prost | 9 |
| 4 | Riccardo Patrese | 6 |
| 5 | Nelson Piquet | 6 |
| 6 | JJ Lehto | 4 |
| 7 | Stefano Modena | 3 |
| 7 | Pierluigi Martini | 3 |
| 9 | Satoru Nakajima | 2 |
| 9 | Mika Häkkinen | 2 |
| 11 | Aguri Suzuki | 1 |
| 11 | Jean Alesi | 1 |
| 11 | Julian Bailey | 1 |