| «1991-02» | Brazil Grand Prix - XX Grande Premio do Brasil |
| 1991-03-24 | Interlagos - Autodromo José Carlos Pace - 71 laps × 4.325 km : 307.075 km |
| Pos | Grid | Car | Driver | Constructor | Q1 | Q2 | Best | Gap | Interval |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | Ayrton Senna | McLaren • Honda | 01:18.711 | 01:16.392 | 01:16.392 | 203.817 km/h | |
| 2 | 2 | 6 | Riccardo Patrese | Williams • Renault | 01:22.069 | 01:16.775 | 01:16.775 | +00.383 (+0.501%) | +00.383 |
| 3 | 3 | 5 | Nigel Mansell | Williams • Renault | 01:20.056 | 01:16.843 | 01:16.843 | +00.451 (+0.590%) | +00.068 |
| 4 | 4 | 2 | Gerhard Berger | McLaren • Honda | 01:19.557 | 01:17.471 | 01:17.471 | +01.079 (+1.412%) | +00.628 |
| 5 | 5 | 28 | Jean Alesi | Ferrari | 01:19.350 | 01:17.601 | 01:17.601 | +01.209 (+1.583%) | +00.130 |
| 6 | 6 | 27 | Alain Prost | Ferrari | 01:20.079 | 01:17.739 | 01:17.739 | +01.347 (+1.763%) | +00.138 |
| 7 | 7 | 20 | Nelson Piquet | Benetton • Ford Cosworth | 01:20.105 | 01:18.577 | 01:18.577 | +02.185 (+2.860%) | +00.838 |
| 8 | 8 | 15 | Mauricio Gugelmin | Leyton House • Ilmor | 01:22.196 | 01:18.664 | 01:18.664 | +02.272 (+2.974%) | +00.087 |
| 9 | 9 | 4 | Stefano Modena | Tyrrell • Honda | 01:21.709 | 01:18.847 | 01:18.847 | +02.455 (+3.214%) | +00.183 |
| 10 | 10 | 32 | Bertrand Gachot | Jordan • Ford Cosworth | 01:21.493 | 01:18.882 | 01:18.882 | +02.490 (+3.260%) | +00.035 |
| 11 | 11 | 29 | Eric Bernard | Lola • Ford Cosworth | 01:22.127 | 01:19.291 | 01:19.291 | +02.899 (+3.795%) | +00.409 |
| 12 | 12 | 21 | Emanuele Pirro | Dallara • Judd | 01:21.286 | 01:19.305 | 01:19.305 | +02.913 (+3.813%) | +00.014 |
| 13 | 13 | 33 | Andrea de Cesaris | Jordan • Ford Cosworth | 01:21.710 | 01:19.339 | 01:19.339 | +02.947 (+3.858%) | +00.034 |
| 14 | 14 | 19 | Roberto Moreno | Benetton • Ford Cosworth | 01:21.266 | 01:19.360 | 01:19.360 | +02.968 (+3.885%) | +00.021 |
| 15 | 15 | 16 | Ivan Capelli | Leyton House • Ilmor | 01:21.171 | 01:19.517 | 01:19.517 | +03.125 (+4.091%) | +00.157 |
| 16 | 16 | 3 | Satoru Nakajima | Tyrrell • Honda | 01:21.825 | 01:19.546 | 01:19.546 | +03.154 (+4.129%) | +00.029 |
| 17 | 17 | 30 | Aguri Suzuki | Lola • Ford Cosworth | 01:22.281 | 01:19.832 | 01:19.832 | +03.440 (+4.503%) | +00.286 |
| 18 | 18 | 25 | Thierry Boutsen | Ligier • Lamborghini | 01:23.197 | 01:19.868 | 01:19.868 | +03.476 (+4.550%) | +00.036 |
| 19 | 19 | 22 | JJ Lehto | Dallara • Judd | 01:22.243 | 01:19.954 | 01:19.954 | +03.562 (+4.663%) | +00.086 |
| 20 | 20 | 23 | Pierluigi Martini | Minardi • Ferrari | 01:22.852 | 01:20.175 | 01:20.175 | +03.783 (+4.952%) | +00.221 |
| 21 | 21 | 24 | Gianni Morbidelli | Minardi • Ferrari | 01:26.147 | 01:20.502 | 01:20.502 | +04.110 (+5.380%) | +00.327 |
| 22 | 22 | 11 | Mika Hakkinen | Lotus • Judd | 01:25.587 | 01:20.611 | 01:20.611 | +04.219 (+5.523%) | +00.109 |
| 23 | 23 | 26 | Erik Comas | Ligier • Lamborghini | 01:22.682 | 01:21.168 | 01:21.168 | +04.776 (+6.252%) | +00.557 |
| 24 | 24 | 17 | Gabriele Tarquini | AGS • Ford Cosworth | 01:23.618 | 01:21.219 | 01:21.219 | +04.827 (+6.319%) | +00.051 |
| 25 | 25 | 8 | Mark Blundell | Brabham • Yamaha | 01:23.547 | 01:21.230 | 01:21.230 | +04.838 (+6.333%) | +00.011 |
| 26 | 26 | 7 | Martin Brundle | Brabham • Yamaha | 01:23.271 | 01:21.280 | 01:21.280 | +04.888 (+6.399%) | +00.050 |
| 27 | 10 | Alex Caffi | Footwork • Porsche | 01:25.555 | 01:22.190 | 01:22.190 | +05.798 (+7.590%) | +00.910 | |
| 28 | 18 | Stefan Johansson | AGS • Ford Cosworth | 01:24.698 | 01:22.432 | 01:22.432 | +06.040 (+7.907%) | +00.242 | |
| 29 | 9 | Michele Alboreto | Footwork • Porsche | 01:25.795 | 01:22.739 | 01:22.739 | +06.347 (+8.308%) | +00.307 | |
| 30 | 12 | Julian Bailey | Lotus • Judd | 01:24.947 | 01:23.590 | 01:23.590 | +07.198 (+9.422%) | +00.851 | |
| 31 | 35 | Eric van de Poele | Lamborghini | 01:21.919 | 01:21.919 | +05.527 (+7.235%) | |||
| 32 | 34 | Nicola Larini | Lamborghini | 01:22.944 | 01:22.944 | +06.552 (+8.577%) | +01.025 | ||
| 33 | 31 | Pedro Chaves | Coloni • Ford Cosworth | 01:23.231 | 01:23.231 | +06.839 (+8.953%) | +00.287 | ||
| 34 | 14 | Olivier Grouillard | Fondmetal • Ford Cosworth | 01:23.951 | 01:23.951 | +07.559 (+9.895%) | +00.720 |