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GRANDE PRÉMIO DE PORTUGAL 1991
| Pos | Nr | Driver | Car | Engine | Tyre | Q1 | Q2 | G | Laps |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 6 |  Riccardo Patrese |
 Williams FW14 [3] |
Renault RS3 V10 3.5 | Goodyear | 01:14.041 | 01:13.001 | 01:13.001 | 0 |
| 2 | 2 |  Gerhard Berger |
McLaren MP4/6 [9] |
Honda RA121E V12 3.5 | Goodyear | 01:13.221 | 01:13.430 | 01:13.221 | 0 |
| 3 | 1 |  Ayrton Senna |
McLaren MP4/6 [10] |
Honda RA121E V12 3.5 | Goodyear | 01:13.752 | 01:13.444 | 01:13.444 | 0 |
| 4 | 5 | Nigel Mansell |
Williams FW14 [5] |
Renault RS3 V10 3.5 | Goodyear | 01:13.944 | 01:13.667 | 01:13.667 | 0 |
| 5 | 27 |  Alain Prost |
Ferrari 643 [130] |
Ferrari 037 V12 3.5 | Goodyear | 01:15.018 | 01:14.352 | 01:14.352 | 0 |
| 6 | 28 | Jean Alesi |
Ferrari 643 [129] |
Ferrari 037 V12 3.5 | Goodyear | 01:15.572 | 01:14.852 | 01:14.852 | 0 |
| 7 | 15 | Maurício Gugelmin |
Leyton House CG911 [5] |
Ilmor 2175A V10 3.5 | Goodyear | 01:17.214 | 01:15.266 | 01:15.266 | 0 |
| 8 | 23 | Pierluigi Martini |
Minardi M191 [6] |
Ferrari 037 V12 3.5 | Goodyear | 01:15.394 | 01:16.982 | 01:15.394 | 0 |
| 9 | 16 | Ivan Capelli |
Leyton House CG911 [4] |
Ilmor 2175A V10 3.5 | Goodyear | 01:15.481 | 01:15.827 | 01:15.481 | 0 |
| 10 | 19 |  Michael Schumacher |
Benetton B191 [5] |
Ford Cosworth HBA5 V8 3.5 | Pirelli | 01:16.477 | 01:15.578 | 01:15.578 | 0 |
| 11 | 20 | Nelson Piquet |
Benetton B191 [6] |
Ford Cosworth HBA5 V8 3.5 | Pirelli | 01:16.241 | 01:15.666 | 01:15.666 | 0 |
| 12 | 4 | Stefano Modena |
Tyrrell 020 [6] |
Honda RA101E V10 3.5 | Pirelli | 01:16.018 | 01:15.707 | 01:15.707 | 0 |
| 13 | 24 | Gianni Morbidelli |
Minardi M191 [5] |
Ferrari 037 V12 3.5 | Goodyear | 01:16.540 | 01:15.749 | 01:15.749 | 0 |
| 14 | 33 | Andrea de Cesaris |
 Jordan 191 [4] |
Ford Cosworth HBB4 V8 3.5 | Goodyear | 01:15.972 | 01:15.936 | 01:15.936 | 0 |
| 15 | 8 | Mark Blundell |
Brabham BT60Y [03] |
Yamaha OX99 V12 3.5 | Pirelli | 01:16.567 | 01:16.038 | 01:16.038 | 0 |
| 16 | 32 | Roberto Moreno |
Jordan 191 [5] |
Ford Cosworth HBB4 V8 3.5 | Goodyear | 01:16.956 | 01:16.080 | 01:16.080 | 0 |
| 17 | 21 | Emanuele Pirro |
Dallara 191 [21] |
Judd GV V10 3.5 | Pirelli | 01:16.725 | 01:16.135 | 01:16.136 | 0 |
| 18 | 22 |  Jyrki Järvilehto |
Dallara 191 [22] |
Judd GV V10 3.5 | Pirelli | 01:16.724 | 01:16.532 | 01:16.532 | 0 |
| 19 | 7 | Martin Brundle |
Brabham BT60Y [04] |
Yamaha OX99 V12 3.5 | Pirelli | 01:17.298 | 01:16.536 | 01:16.536 | 0 |
| 20 | 25 |  Thierry Boutsen |
Ligier JS35B [7] |
Lamborghini 3512 V12 3.5 | Goodyear | 01:18.005 | 01:16.757 | 01:16.757 | 0 |
| 21 | 3 |  Satoru Nakajima |
Tyrrell 020 [7] |
Honda RA101E V10 3.5 | Pirelli | 01:16.926 | 01:17.035 | 01:16.926 | 0 |
| 22 | 12 | Johnny Herbert |
Lotus 102B [2] |
Judd EV V8 3.5 | Goodyear | 01:17.713 | 01:17.015 | 01:17.015 | 0 |
| 23 | 26 | Érik Comas |
Ligier JS35B [5] |
Lamborghini 3512 V12 3.5 | Goodyear | 01:18.192 | 01:17.226 | 01:17.226 | 0 |
| 24 | 9 | Michele Alboreto |
Footwork FA12C [5] |
Ford Cosworth DFR V8 3.5 | Goodyear | 01:18.389 | 01:17.330 | 01:17.330 | 0 |
| 25 | 30 | Aguri Suzuki |
Lola 91 [1] |
Ford Cosworth DFR V8 3.5 | Goodyear | 01:17.434 | 01:17.537 | 01:17.434 | 0 |
| 26 | 11 | Mika Häkkinen |
Lotus 102B [3] |
Judd EV V8 3.5 | Goodyear | 01:18.947 | 01:17.714 | 01:17.714 | 0 |
| DNQ | 29 | Éric Bernard |
Lola 91 [2] |
Ford Cosworth DFR V8 3.5 | Goodyear | 01:18.186 | 01:17.825 | 01:17.825 | 0 |
| DNQ | 17 | Gabriele Tarquini |
AGS JH27 [48] |
Ford Cosworth DFR V8 3.5 | Goodyear | 01:18.295 | 01:18.022 | 01:18.022 | 0 |
| DNQ | 34 | Nicola Larini |
Lambo 291 [5] |
Lamborghini 3512 V12 3.5 | Goodyear | 01:21.612 | 01:18.139 | 01:18.139 | 0 |
| DNQ | 35 | Eric van de Poele |
Lambo 291 [8] |
Lamborghini 3512 V12 3.5 | Goodyear | 01:20.411 | 01:18.266 | 01:18.266 | 0 |
| DNPQ | 18 | Fabrizio Barbazza |
AGS JH27 [47] |
Ford Cosworth DFR V8 3.5 | Goodyear | 01:19.292 | 0 |
||
| DNPQ | 14 | Olivier Grouillard |
Fondmetal F1 [1] |
Ford Cosworth DFR V8 3.5 | Goodyear | 01:19.500 | 0 |
||
| DNPQ | 10 | Alex Caffi |
Footwork FA12C [3] |
Ford Cosworth DFR V8 3.5 | Goodyear | 01:19.521 | 0 |
||
| DNPQ | 31 |  Pedro Chaves |
Coloni C4 [2] |
Ford Cosworth DFR V8 3.5 | Goodyear | 01:23.858 | 0 |
||
| Starting grid limited to 26 positions. | |||||||||
| Official Name | Grande Prémio de Portugal 1991 |
|---|---|
| Circuit | Estoril |
| Date | September 22 |
| Pole | Riccardo Patrese 01:13.001 |
| Fastest Lap | Nigel Mansell 01:18.179 |
| Podium | 1st Riccardo Patrese (59) , 2nd Ayrton Senna, 3rd Jean Alesi |
| GP Number | 513 |
| Round | 13 |
| Weather | Sunny |
| Prev race | Gran Premio d’Italia September 8 |
| Next race | Gran Premio de España September 29 |
| Pos | Driver | Team | Pts |
|---|---|---|---|
| 1 | Ayrton Senna | McLaren | 83 |
| 2 | Nigel Mansell | Williams | 59 |
| 3 | Riccardo Patrese | Williams | 44 |
| 4 | Gerhard Berger | McLaren | 31 |
| 5 | Nelson Piquet | Benetton | 25 |
| 6 | Alain Prost | Ferrari | 25 |
| 7 | Jean Alesi | Ferrari | 18 |
| 8 | Stefano Modena | Tyrrell | 9 |
| 9 | Andrea de Cesaris | Jordan | 9 |
| 10 | Roberto Moreno | Jordan | 8 |
| Benetton | |||
| 11 | Pierluigi Martini | Minardi | 6 |
| 12 | Jyrki Järvilehto | Dallara | 4 |
| 13 | Bertrand Gachot | Jordan | 4 |
| 14 | Michael Schumacher | Jordan | 3 |
| Benetton | |||
| 15 | Satoru Nakajima | Tyrrell | 2 |
| 16 | Mika Häkkinen | Lotus | 2 |
| 17 | Aguri Suzuki | Lola | 1 |
| 18 | Julian Bailey | Lotus | 1 |
| 19 | Emanuele Pirro | Dallara | 1 |
| 20 | Éric Bernard | Lola | 1 |
| 21 | Ivan Capelli | Leyton House | 1 |
| 22 | Mark Blundell | Brabham | 1 |
| Pos | Constructor | Pts |
|---|---|---|
| 1 | McLaren Honda |
114 |
| 2 | Williams Renault |
103 |
| 3 | Ferrari |
43 |
| 4 | Benetton Ford Cosworth |
36 |
| 5 | Jordan Ford Cosworth |
13 |
| 6 | Tyrrell Honda |
11 |
| 7 | Minardi Ferrari |
6 |
| 8 | Dallara Judd |
5 |
| 9 | Lotus Judd |
3 |
| 10 | Lola Ford Cosworth |
2 |
| 11 | Leyton House Ilmor |
1 |
| 12 | Brabham Yamaha |
1 |