Portuguese Grand Prix
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| Pos | Driver | Constructor | Q1 | Q2 | Gap |
|---|---|---|---|---|---|
| 1 | Ayrton Senna | McLaren-Honda | 1:24.775 | 1:24.067 | |
| 2 | Alain Prost | McLaren-Honda | 1:26.735 | 1:24.134 | 0.067 |
| 3 | Nigel Mansell | Williams-Judd | 1:25.898 | 1:24.269 | 0.202 |
| 4 | Thierry Boutsen | Benetton-Ford | 1:24.904 | 0.837 | |
| 5 | Alessandro Nannini | Benetton-Ford | 1:26.673 | 1:25.032 | 0.965 |
| 6 | Ivan Capelli | March-Judd | 1:26.221 | 1:25.115 | 1.048 |
| 7 | Riccardo Patrese | Williams-Judd | 1:27.504 | 1:25.217 | 1.150 |
| 8 | Gerhard Berger | Ferrari | 1:27.796 | 1:25.466 | 1.399 |
| 9 | Nelson Piquet | Lotus-Honda | 1:28.015 | 1:25.648 | 1.581 |
| 10 | Michele Alboreto | Ferrari | 1:29.034 | 1:26.447 | 2.380 |
| 11 | Mauricio Gugelmin | March-Judd | 1:27.414 | 1:26.578 | 2.511 |
| 12 | Philippe Alliot | Lola-Ford | 1:27.927 | 1:26.832 | 2.765 |
| 13 | Philippe Streiff | AGS-Ford | 1:28.099 | 1:26.971 | 2.904 |
| 14 | Nicola Larini | Osella | 1:28.417 | 1:27.012 | 2.945 |
| 15 | Satoru Nakajima | Lotus-Honda | 1:28.840 | 1:27.171 | 3.104 |
| 16 | Yannick Dalmas | Lola-Ford | 1:29.688 | 1:27.187 | 3.120 |
| 17 | Derek Warwick | Arrows-Megatron | 1:28.473 | 1:27.240 | 3.173 |
| 18 | Alex Caffi | Dallara-Ford | 1:27.907 | 1:27.350 | 3.283 |
| 19 | René Arnoux | Ligier-Judd | 1:29.157 | 1:27.351 | 3.284 |
| 20 | Pierluigi Martini | Minardi-Ford | 1:27.826 | 1:27.407 | 3.340 |
| 21 | Stefan Johansson | Ligier-Judd | 1:28.009 | 1:27.474 | 3.407 |
| 22 | Jonathan Palmer | Tyrrell-Ford | 1:27.582 | 1:27.548 | 3.481 |
| 23 | Andrea de Cesaris | Rial-Ford | 1:28.315 | 1:27.798 | 3.731 |
| 24 | Luis Perez-Sala | Minardi-Ford | 1:28.694 | 1:27.833 | 3.766 |
| 25 | Eddie Cheever | Arrows-Megatron | 1:29.305 | 1:27.859 | 3.792 |
| 26 | Stefano Modena | EuroBrun-Ford | 1:30.759 | 1:27.977 | 3.910 |
| DNQ | Bernd Schneider | Zakspeed | 1:31.144 | 1:28.194 | 4.127 |
| DNQ | Oscar Larrauri | EuroBrun-Ford | 1:31.366 | 1:28.664 | 4.597 |
| DNQ | Julian Bailey | Tyrrell-Ford | 1:30.125 | 1:29.066 | 4.999 |
| DNQ | Piercarlo Ghinzani | Zakspeed | 1:29.824 | 1:29.503 | 5.436 |
| 1 | Alain Prost | 84 | 9,6,9,9,6,6,9,0,6,6,6,0,9,9 | |
| 2 | Ayrton Senna | 79 | 0,9,0,6,9,9,6,9,9,9,9,0,1,3 | |
| 3 | Gerhard Berger | 38 | 6,2,6,4,0,0,3,0,4,3,0,9,0,1 | |
| 4 | Michele Alboreto | 24 | 2,0,4,3,0,0,4,0,3,0,0,6,2,0 | |
| 5 | Thierry Boutsen | 21 | 0,3,0,0,4,4,0,0,1,4,0,1,4,0 | |
| 6 | Nelson Piquet | 18 | 4,4,0,0,3,0,2,2,0,0,3,0,0,0 | |
| 7 | Derek Warwick | 17 | 3,0,3,2,0,0,0,1,0,0,2,3,3,0 | |
| 8 | Ivan Capelli | 16 | 0,0,0,0,2,0,0,0,2,0,4,2,6,0 | |
| 9 | Nigel Mansell | 12 | 0,0,0,0,0,0,0,6,0,0,0,0,0,6 | |
| ▼ | 10 | Alessandro Nannini | 10 | 0,1,0,0,0,0,1,4,0,0,0,0,0,4 |
| ▼ | 11 | Eddie Cheever | 6 | 0,0,0,1,0,0,0,0,0,0,1,4,0,0 |
| 12 | Mauricio Gugelmin | 5 | 0,0,0,0,0,0,0,3,0,2,0,0,0,0 | |
| Jonathan Palmer | 5 | 0,0,2,0,1,2,0,0,0,0,0,0,0,0 | ||
| ▲ | 14 | Riccardo Patrese | 4 | 0,0,1,0,0,0,0,0,0,1,0,0,0,2 |
| ▼ | 15 | Andrea de Cesaris | 3 | 0,0,0,0,0,3,0,0,0,0,0,0,0,0 |
| 16 | Pierluigi Martini | 1 | 0,0,0,0,0,1,0,0,0,0,0,0,0,0 | |
| Satoru Nakajima | 1 | 1,0,0,0,0,0,0,0,0,0,0,0,0,0 |
| 1 | McLaren-Honda | 169 | 9,15,9,15,15,15,15,9,15,15,15,0,10,12 | |
| 2 | Ferrari | 62 | 8,2,10,7,0,0,7,0,7,3,0,15,2,1 | |
| 3 | Benetton-Ford | 31 | 0,4,0,0,4,4,1,4,1,4,0,1,4,4 | |
| 4 | Arrows-Megatron | 23 | 3,0,3,3,0,0,0,1,0,0,3,7,3,0 | |
| 5 | March-Judd | 21 | 0,0,0,0,2,0,0,3,2,2,4,2,6,0 | |
| 6 | Lotus-Honda | 19 | 5,4,0,0,3,0,2,2,0,0,3,0,0,0 | |
| 7 | Williams-Judd | 16 | 0,0,1,0,0,0,0,6,0,1,0,0,0,8 | |
| 8 | Tyrrell-Ford | 5 | 0,0,2,0,1,2,0,0,0,0,0,0,0,0 | |
| 9 | Rial-Ford | 3 | 0,0,0,0,0,3,0,0,0,0,0,0,0,0 | |
| 10 | Minardi-Ford | 1 | 0,0,0,0,0,1,0,0,0,0,0,0,0,0 |