The 1991 Portuguese Grand Prix was Round 13 of the 1991 FIA Formula 1 World Championship. The event was held at Estoril, Portugal on Sunday, 22 September 1991. Riccardo Patrese started on pole position in the Williams Renault and was the race winner.
1991 Portuguese Grand Prix Race Result
| Pos. | No. | Driver | Nationality | Team | Tyre | Laps | Time/Retired | Race Time | Gap | Interval | Best Lap | Lap | Speed | Started | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 6 | Riccardo Patrese | Italy | Williams Renault | Goodyear | 71 | 1:35:42.304 | 1:35:42.304 | - | - | 1:18.350 | 38 | 193.626 | 1 | 10 |
| 2 | 1 | Ayrton Senna | Brazil | McLaren Honda | Goodyear | 71 | +20.941 | 1:36:03.245 | +20.941 | +20.941 | 1:18.929 | 50 | 192.922 | 3 | 6 |
| 3 | 28 | Jean Alesi | France | Ferrari | Goodyear | 71 | +53.554 | 1:36:35.858 | +53.554 | +32.613 | 1:19.418 | 55 | 191.836 | 6 | 4 |
| 4 | 23 | Pierluigi Martini | Italy | Minardi Ferrari | Goodyear | 71 | +1:03.498 | 1:36:45.802 | +1:03.498 | +9.944 | 1:19.581 | 57 | 191.508 | 8 | 3 |
| 5 | 20 | Nelson Piquet | Brazil | Benetton Ford | Pirelli | 71 | +1:10.033 | 1:36:52.337 | +1:10.033 | +6.535 | 1:19.073 | 45 | 191.293 | 11 | 2 |
| 6 | 19 | Michael Schumacher | Germany | Benetton Ford | Pirelli | 71 | +1:16.582 | 1:36:58.886 | +1:16.582 | +6.549 | 1:19.206 | 68 | 191.077 | 10 | 1 |
| 7 | 15 | Maurício Gugelmin | Brazil | Leyton House Ilmor | Goodyear | 70 | +1 lap | 1:36:03.921 | 1 lap | 1 lap | 1:19.757 | 65 | 190.183 | 7 | |
| 8 | 33 | Andrea de Cesaris | Italy | Jordan Ford | Goodyear | 70 | +1 lap | 1:36:04.106 | 1 lap | +0.185 | 1:19.210 | 48 | 190.176 | 14 | |
| 9 | 24 | Gianni Morbidelli | Italy | Minardi Ferrari | Goodyear | 70 | +1 lap | 1:36:17.000 | 1 lap | +12.894 | 1:20.357 | 56 | 189.752 | 13 | |
| 10 | 32 | Roberto Moreno | Brazil | Jordan Ford | Goodyear | 70 | +1 lap | 1:36:27.278 | 1 lap | +10.278 | 1:20.096 | 57 | 189.415 | 16 | |
| 11 | 26 | Érik Comas | France | Ligier Lamborghini | Goodyear | 70 | +1 lap | 1:37:04.866 | 1 lap | +37.588 | 1:20.781 | 43 | 188.193 | 23 | |
| 12 | 7 | Martin Brundle | Great Britain | Brabham Yamaha | Pirelli | 69 | +2 laps | 1:36:08.974 | 2 laps | 1 lap | 1:20.480 | 27 | 187.301 | 19 | |
| 13 | 3 | Satoru Nakajima | Japan | Tyrrell Honda | Pirelli | 68 | +3 laps | 1:35:43.453 | 3 laps | 1 lap | 1:21.966 | 41 | 185.407 | 21 | |
| 14 | 11 | Mika Häkkinen | Finland | Lotus Judd | Goodyear | 68 | +3 laps | 1:35:44.445 | 3 laps | +0.992 | 1:20.445 | 35 | 185.375 | 26 | |
| 15 | 9 | Michele Alboreto | Italy | Footwork Porsche | Goodyear | 68 | +3 laps | 1:35:48.391 | 3 laps | +3.946 | 1:20.082 | 60 | 185.248 | 24 | |
| 16 | 25 | Thierry Boutsen | Belgium | Ligier Lamborghini | Goodyear | 68 | +3 laps | 1:36:31.572 | 3 laps | +43.181 | 1:20.700 | 38 | 183.867 | 20 | |
| 17 | 16 | Ivan Capelli | Italy | Leyton House Ilmor | Goodyear | 64 | Spun Off | 1:29:54.769 | 7 laps | 4 laps | 1:19.519 | 45 | 185.779 | 9 | |
| DNF | 4 | Stefano Modena | Italy | Tyrrell Honda | Pirelli | 56 | Engine | 1:17:25.539 | 1:20.342 | 30 | 188.774 | 12 | |||
| DSQ | 5 | Nigel Mansell | Great Britain | Williams Renault | Goodyear | 51 | Disqualified | 1:10:12.370 | 1:18.179 | 36 | 189.598 | 4 | |||
| DNF | 30 | Aguri Suzuki | Japan | Lola Ford | Goodyear | 40 | Transmission | 56:25.097 | 1:21.586 | 33 | 185.046 | 25 | |||
| DNF | 27 | Alain Prost | France | Ferrari | Goodyear | 39 | Engine | 53:16.230 | 1:19.531 | 33 | 191.081 | 5 | |||
| DNF | 2 | Gerhard Berger | Austria | McLaren Honda | Goodyear | 37 | Engine | 50:28.327 | 1:18.856 | 36 | 191.333 | 2 | |||
| DNF | 21 | Emanuele Pirro | Italy | Dallara Judd | Pirelli | 18 | Engine | 25:41.264 | 1:22.592 | 11 | 182.888 | 17 | |||
| DNF | 22 | JJ Lehto | Finland | Dallara Judd | Pirelli | 14 | Gearbox | 20:09.258 | 1:22.165 | 13 | 181.301 | 18 | |||
| DNF | 8 | Mark Blundell | Great Britain | Brabham Yamaha | Pirelli | 12 | Suspension | 17:01.493 | 1:22.801 | 12 | 183.966 | 15 | |||
| DNF | 12 | Johnny Herbert | Great Britain | Lotus Judd | Goodyear | 1 | Engine | 1:39.804 | 1:39.804 | 1 | 156.907 | 22 | |||
| DNQ | 29 | Eric Bernard | France | Lola Ford | Goodyear | ||||||||||
| DNQ | 17 | Gabriele Tarquini | Italy | AGS Ford | Goodyear | ||||||||||
| DNQ | 34 | Nicola Larini | Italy | Lambo Lamborghini | Goodyear | ||||||||||
| DNQ | 35 | Eric van de Poele | Belgium | Lambo Lamborghini | Goodyear | ||||||||||
| DNPQ | 18 | Fabrizio Barbazza | Italy | AGS Ford | Goodyear | ||||||||||
| DNPQ | 14 | Olivier Grouillard | France | Fondmetal Ford | Goodyear | ||||||||||
| DNPQ | 10 | Alex Caffi | Italy | Footwork Porsche | Goodyear | ||||||||||
| DNPQ | 13 | Pedro Chaves | Portugal | Coloni Ford | Goodyear |