Autódromo do Estoril · 22 September 1991
| Pos | Team | Points Breakdown | Pts | |
|---|---|---|---|---|
| 1 | Williams Patrese 10 + Mansell 0 | Patrese 10 + Mansell 0 | 10 | |
| 2 | McLaren Senna 6 + Berger 0 | Senna 6 + Berger 0 | 6 | |
| 3 | Ferrari Alesi 4 + Prost 0 | Alesi 4 + Prost 0 | 4 | |
| 4 | Minardi Martini 3 + Morbidelli 0 | Martini 3 + Morbidelli 0 | 3 | |
| 5 | Benetton Piquet 2 + Schumacher 1 | Piquet 2 + Schumacher 1 | 3 | |
| 6 | Leyton House Gugelmin 0 + Capelli 0 | Gugelmin 0 + Capelli 0 | 0 | |
| 7 | Jordan Cesaris 0 + Moreno 0 | Cesaris 0 + Moreno 0 | 0 | |
| 8 | Ligier Comas 0 + Boutsen 0 | Comas 0 + Boutsen 0 | 0 | |
| 9 | Brabham Brundle 0 + Blundell 0 | Brundle 0 + Blundell 0 | 0 | |
| 10 | Tyrrell Nakajima 0 + Modena 0 | Nakajima 0 + Modena 0 | 0 | |
| 11 | Team Lotus Häkkinen 0 + Herbert 0 | Häkkinen 0 + Herbert 0 | 0 | |
| 12 | Footwork Alboreto 0 | Alboreto 0 | 0 | |
| 13 | Lola Suzuki 0 | Suzuki 0 | 0 | |
| 14 | Dallara Pirro 0 + Järvilehto 0 | Pirro 0 + Järvilehto 0 | 0 |
| Pos | Driver | Team | Race time / Gap | Laps | Stops | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Riccardo Patrese Williams | Williams | 1:35:42.304 | 71 | — | 10 | |
| 2 | Ayrton Senna McLaren | McLaren | +20.941s | 71 | — | 6 | |
| 3 | Jean Alesi Ferrari | Ferrari | +53.554s | 71 | — | 4 | |
| 4 | Pierluigi Martini Minardi | Minardi | +1:03.498 | 71 | — | 3 | |
| 5 | Nelson Piquet Benetton | Benetton | +1:10.033 | 71 | — | 2 | |
| 6 | Michael Schumacher Benetton | Benetton | +1:16.582 | 71 | — | 1 | |
| 7 | Maurício Gugelmin Leyton House | Leyton House | +1 Lap | 70 | — | — | |
| 8 | Andrea de Cesaris Jordan | Jordan | +1 Lap | 70 | — | — | |
| 9 | Gianni Morbidelli Minardi | Minardi | +1 Lap | 70 | — | — | |
| 10 | Roberto Moreno Jordan | Jordan | +1 Lap | 70 | — | — | |
| 11 | Érik Comas Ligier | Ligier | +1 Lap | 70 | — | — | |
| 12 | Martin Brundle Brabham | Brabham | +2 Laps | 69 | — | — | |
| 13 | Satoru Nakajima Tyrrell | Tyrrell | +3 Laps | 68 | — | — | |
| 14 | Mika Häkkinen Team Lotus | Team Lotus | +3 Laps | 68 | — | — | |
| 15 | Michele Alboreto Footwork | Footwork | +3 Laps | 68 | — | — | |
| 16 | Thierry Boutsen Ligier | Ligier | +3 Laps | 68 | — | — | |
| 17 | Ivan Capelli Leyton House | Leyton House | DNF Spun off | 64 | — | — | |
| 18 | Stefano Modena Tyrrell | Tyrrell | DNF Engine | 56 | — | — | |
| 19 | Nigel Mansell Williams | Williams | DSQ | 51 | — | — | |
| 20 | Aguri Suzuki Lola | Lola | DNF Transmission | 40 | — | — | |
| 21 | Alain Prost Ferrari | Ferrari | DNF Engine | 39 | — | — | |
| 22 | Gerhard Berger McLaren | McLaren | DNF Engine | 37 | — | — | |
| 23 | Emanuele Pirro Dallara | Dallara | DNF Engine | 18 | — | — | |
| 24 | Jyrki Järvilehto Dallara | Dallara | DNF Gearbox | 21 | — | — | |
| 25 | Mark Blundell Brabham | Brabham | DNF Suspension | 12 | — | — | |
| 26 | Johnny Herbert Team Lotus | Team Lotus | DNF Engine | 1 | — | — |