Round 13 of 16 · Estoril · 22 September 1991, Sunday
Portuguese Grand Prix
Key highlights
Patrese
pole position
71
laps
17
finishers out of 26
| Pos | Driver | Team | Time / Gap | Pts |
|---|---|---|---|---|
| 1 | Riccardo Patrese | Williams | 1:35:42.304 | 10 |
| 2 | Ayrton Senna | McLaren | +20.941 | 6 |
| 3 | Jean Alesi | Ferrari | +53.554 | 4 |
| 4 | Pierluigi Martini | Minardi | +1:03.498 | 3 |
| 5 | Nelson Piquet | Benetton | +1:10.033 | 2 |
| 6 | Michael Schumacher | Benetton | +1:16.582 | 1 |
| 7 | Maurício Gugelmin | Leyton House | +1 Lap | |
| 8 | Andrea de Cesaris | Jordan | +1 Lap | |
| 9 | Gianni Morbidelli | Minardi | +1 Lap | |
| 10 | Roberto Moreno | Jordan | +1 Lap | |
| 11 | Érik Comas | Ligier | +1 Lap | |
| 12 | Martin Brundle | Brabham | +2 Laps | |
| 13 | Satoru Nakajima | Tyrrell | +3 Laps | |
| 14 | Mika Häkkinen | Team Lotus | +3 Laps | |
| 15 | Michele Alboreto | Footwork | +3 Laps | |
| 16 | Thierry Boutsen | Ligier | +3 Laps | |
| 17 | Ivan Capelli | Leyton House | Spun off | |
| DNF | Stefano Modena | Tyrrell | Engine | |
| DSQ | Nigel Mansell | Williams | Disqualified | |
| DNF | Aguri Suzuki | Lola | Transmission | |
| DNF | Alain Prost | Ferrari | Engine | |
| DNF | Gerhard Berger | McLaren | Engine | |
| DNF | Emanuele Pirro | Dallara | Engine | |
| DNF | Jyrki Järvilehto | Dallara | Gearbox | |
| DNF | Mark Blundell | Brabham | Suspension | |
| DNF | Johnny Herbert | Team Lotus | Engine | |
| DNQ | Éric Bernard | Lola | Did not qualify | |
| DNQ | Gabriele Tarquini | AGS | Did not qualify | |
| DNQ | Nicola Larini | Lambo | Did not qualify | |
| DNQ | Eric van de Poele | Lambo | Did not qualify | |
| DNPQ | Fabrizio Barbazza | AGS | Did not prequalify | |
| DNPQ | Olivier Grouillard | Fondmetal | Did not prequalify | |
| DNPQ | Alex Caffi | Footwork | Did not prequalify | |
| DNPQ | Pedro Chaves | Coloni | Did not prequalify |
- DNF
- Did not finish
- DSQ
- Disqualified
- DNQ
- Did not qualify
- DNPQ
- Did not pre-qualify