| «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 | Laps | Time / Gap | Interval | Points |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | Ayrton Senna | McLaren • Honda | 71 | 1:38:28.128 | 187.110 km/h | 10 |
| 2 | 2 | 6 | Riccardo Patrese | Williams • Renault | 71 | +02.991 | +02.991 | 6 |
| 3 | 4 | 2 | Gerhard Berger | McLaren • Honda | 71 | +05.416 | +02.425 | 4 |
| 4 | 6 | 27 | Alain Prost | Ferrari | 71 | +19.369 | +13.953 | 3 |
| 5 | 7 | 20 | Nelson Piquet | Benetton • Ford Cosworth | 71 | +21.960 | +02.591 | 2 |
| 6 | 5 | 28 | Jean Alesi | Ferrari | 71 | +23.641 | +01.681 | 1 |
| 7 | 14 | 19 | Roberto Moreno | Benetton • Ford Cosworth | 70 | +1 lap | ||
| 8 | 21 | 24 | Gianni Morbidelli | Minardi • Ferrari | 69 | +2 laps | ||
| 9 | 22 | 11 | Mika Hakkinen | Lotus • Judd | 68 | +3 laps | ||
| 10 | 18 | 25 | Thierry Boutsen | Ligier • Lamborghini | 68 | +3 laps | ||
| 11 | 12 | 21 | Emanuele Pirro | Dallara • Judd | 68 | +3 laps | ||
| 12 | 26 | 7 | Martin Brundle | Brabham • Yamaha | 67 | +4 laps | ||
| 13 | 10 | 32 | Bertrand Gachot | Jordan • Ford Cosworth | 63 | out of fuel | ||
| 3 | 5 | Nigel Mansell | Williams • Renault | 59 | gearbox | |||
| 23 | 26 | Erik Comas | Ligier • Lamborghini | 50 | fire | |||
| 20 | 23 | Pierluigi Martini | Minardi • Ferrari | 47 | spin | |||
| 25 | 8 | Mark Blundell | Brabham • Yamaha | 34 | engine | |||
| 11 | 29 | Eric Bernard | Lola • Ford Cosworth | 33 | clutch | |||
| 19 | 22 | JJ Lehto | Dallara • Judd | 22 | alternator | |||
| 13 | 33 | Andrea de Cesaris | Jordan • Ford Cosworth | 20 | accident | |||
| 9 | 4 | Stefano Modena | Tyrrell • Honda | 19 | gear shift | |||
| 15 | 16 | Ivan Capelli | Leyton House • Ilmor | 16 | engine | |||
| 16 | 3 | Satoru Nakajima | Tyrrell • Honda | 12 | spin | |||
| 8 | 15 | Mauricio Gugelmin | Leyton House • Ilmor | 9 | driver unfit | |||
| 24 | 17 | Gabriele Tarquini | AGS • Ford Cosworth | 0 | accident | |||
| DNS | 17 | 30 | Aguri Suzuki | Lola • Ford Cosworth | fuel pump | |||
| DNQ | 10 | Alex Caffi | Footwork • Porsche | |||||
| DNQ | 18 | Stefan Johansson | AGS • Ford Cosworth | |||||
| DNQ | 9 | Michele Alboreto | Footwork • Porsche | |||||
| DNQ | 12 | Julian Bailey | Lotus • Judd | |||||
| DNP | 35 | Eric van de Poele | Lamborghini | |||||
| DNP | 34 | Nicola Larini | Lamborghini | |||||
| DNP | 31 | Pedro Chaves | Coloni • Ford Cosworth | |||||
| DNP | 14 | Olivier Grouillard | Fondmetal • Ford Cosworth |
Fastest lap - 01:20.436 - 193.570 km/h - Nigel Mansell (lap 35)