| «1989-13» | Portugal Grand Prix - XVIII Grande Premio de Portugal |
| 1989-09-24 | Estoril - Autódromo Fernanda Pires da Silva - 71 laps × 4.35 km : 308.85 km |
| Pos | Grid | Car | Driver | Constructor | Q1 | Q2 | Best | Gap | Interval |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | Ayrton Senna | McLaren • Honda | 01:15.496 | 01:15.468 | 01:15.468 | 207.505 km/h | |
| 2 | 2 | 28 | Gerhard Berger | Ferrari | 01:16.799 | 01:16.059 | 01:16.059 | +00.591 (+0.783%) | +00.591 |
| 3 | 3 | 27 | Nigel Mansell | Ferrari | 01:17.387 | 01:16.193 | 01:16.193 | +00.725 (+0.961%) | +00.134 |
| 4 | 4 | 2 | Alain Prost | McLaren • Honda | 01:17.336 | 01:16.204 | 01:16.204 | +00.736 (+0.975%) | +00.011 |
| 5 | 5 | 23 | Pierluigi Martini | Minardi • Ford Cosworth | 01:16.938 | 01:17.161 | 01:16.938 | +01.470 (+1.948%) | +00.734 |
| 6 | 6 | 6 | Riccardo Patrese | Williams • Renault | 01:17.281 | 01:17.852 | 01:17.281 | +01.813 (+2.402%) | +00.343 |
| 7 | 7 | 21 | Alex Caffi | Dallara • Ford Cosworth | 01:18.623 | 01:17.661 | 01:17.661 | +02.193 (+2.906%) | +00.380 |
| 8 | 8 | 5 | Thierry Boutsen | Williams • Renault | 01:17.801 | 01:17.888 | 01:17.801 | +02.333 (+3.091%) | +00.140 |
| 9 | 9 | 24 | Luis Perez-Sala | Minardi • Ford Cosworth | 01:17.844 | 01:18.305 | 01:17.844 | +02.376 (+3.148%) | +00.043 |
| 10 | 10 | 7 | Martin Brundle | Brabham • Judd | 01:17.874 | 01:17.995 | 01:17.874 | +02.406 (+3.188%) | +00.030 |
| 11 | 11 | 8 | Stefano Modena | Brabham • Judd | 01:18.589 | 01:18.093 | 01:18.093 | +02.625 (+3.478%) | +00.219 |
| 12 | 12 | 36 | Stefan Johansson | Onyx • Ford Cosworth | 01:19.281 | 01:18.105 | 01:18.105 | +02.637 (+3.494%) | +00.012 |
| 13 | 13 | 19 | Alessandro Nannini | Benetton • Ford Cosworth | 01:18.115 | 01:18.359 | 01:18.115 | +02.647 (+3.507%) | +00.010 |
| 14 | 14 | 15 | Mauricio Gugelmin | March • Judd | 01:18.124 | 01:18.277 | 01:18.124 | +02.656 (+3.519%) | +00.009 |
| 15 | 15 | 31 | Roberto Moreno | Coloni • Ford Cosworth | 01:18.196 | 01:20.512 | 01:18.196 | +02.728 (+3.615%) | +00.072 |
| 16 | 16 | 20 | Emanuele Pirro | Benetton • Ford Cosworth | 01:18.340 | 01:18.328 | 01:18.328 | +02.860 (+3.790%) | +00.132 |
| 17 | 17 | 30 | Philippe Alliot | Lola • Lamborghini | 01:19.306 | 01:18.386 | 01:18.386 | +02.918 (+3.867%) | +00.058 |
| 18 | 18 | 3 | Jonathan Palmer | Tyrrell • Ford Cosworth | 01:19.172 | 01:18.404 | 01:18.404 | +02.936 (+3.890%) | +00.018 |
| 19 | 19 | 22 | Andrea de Cesaris | Dallara • Ford Cosworth | 01:18.442 | 01:18.511 | 01:18.442 | +02.974 (+3.941%) | +00.038 |
| 20 | 20 | 11 | Nelson Piquet | Lotus • Judd | 01:18.482 | 01:18.682 | 01:18.482 | +03.014 (+3.994%) | +00.040 |
| 21 | 21 | 29 | Michele Alboreto | Lola • Lamborghini | 01:18.563 | 01:18.846 | 01:18.563 | +03.095 (+4.101%) | +00.081 |
| 22 | 22 | 9 | Derek Warwick | Arrows • Ford Cosworth | 01:18.711 | 01:18.892 | 01:18.711 | +03.243 (+4.297%) | +00.148 |
| 23 | 23 | 25 | René Arnoux | Ligier • Ford Cosworth | 01:18.767 | 01:19.979 | 01:18.767 | +03.299 (+4.371%) | +00.056 |
| 24 | 24 | 16 | Ivan Capelli | March • Judd | 01:19.079 | 01:18.785 | 01:18.785 | +03.317 (+4.395%) | +00.018 |
| 25 | 25 | 12 | Satoru Nakajima | Lotus • Judd | 01:19.278 | 01:19.165 | 01:19.165 | +03.697 (+4.899%) | +00.380 |
| 26 | 26 | 10 | Eddie Cheever | Arrows • Ford Cosworth | 01:19.247 | 01:20.006 | 01:19.247 | +03.779 (+5.007%) | +00.082 |
| 27 | 4 | Johnny Herbert | Tyrrell • Ford Cosworth | 01:19.515 | 01:19.264 | 01:19.264 | +03.796 (+5.030%) | +00.017 | |
| 28 | 26 | Olivier Grouillard | Ligier • Ford Cosworth | 01:19.605 | 01:19.436 | 01:19.436 | +03.968 (+5.258%) | +00.172 | |
| 29 | 39 | Pierre-Henri Raphanel | Rial • Ford Cosworth | 01:21.435 | 01:21.435 | 01:21.435 | +05.967 (+7.907%) | +01.999 | |
| 30 | 38 | Christian Danner | Rial • Ford Cosworth | 01:21.678 | 01:22.423 | 01:21.678 | +06.210 (+8.229%) | +00.243 | |
| 31 | 37 | JJ Lehto | Onyx • Ford Cosworth | 01:20.880 | 01:20.880 | +05.412 (+7.171%) | |||
| 32 | 18 | Piercarlo Ghinzani | Osella • Ford Cosworth | 01:21.201 | 01:21.021 | +05.553 (+7.358%) | +00.141 | ||
| 33 | 33 | Oscar Larrauri | Eurobrun • Judd | 01:21.236 | 01:21.326 | +05.858 (+7.762%) | +00.305 | ||
| 34 | 40 | Gabriele Tarquini | AGS • Ford Cosworth | 01:21.881 | 01:21.881 | +06.413 (+8.498%) | +00.555 | ||
| 35 | 35 | Aguri Suzuki | Zakspeed • Yamaha | 01:22.688 | 01:24.116 | +08.648 (+11.459%) | +02.235 | ||
| 36 | 34 | Bernd Schneider | Zakspeed • Yamaha | 01:24.732 | 01:23.920 | +08.452 (+11.199%) | |||
| 37 | 32 | Enrico Bertaggia | Coloni • Ford Cosworth | 01:28.526 | 01:28.526 | +13.058 (+17.303%) | +04.606 |