| «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 | Car | Driver | Constructor | Time | Speed | Lap | Gap |
|---|---|---|---|---|---|---|---|
| 1 | 28 | Gerhard Berger | Ferrari | 01:18.986 | 198.263 km/h | 49 | |
| 2 | 27 | Nigel Mansell | Ferrari | 01:19.047 | 198.110 km/h | 44 | +00.061 |
| 3 | 2 | Alain Prost | McLaren • Honda | 01:19.385 | 197.266 km/h | 48 | +00.399 |
| 4 | 1 | Ayrton Senna | McLaren • Honda | 01:19.490 | 197.006 km/h | 47 | +00.504 |
| 5 | 5 | Thierry Boutsen | Williams • Renault | 01:19.575 | 196.795 km/h | 38 | +00.589 |
| 6 | 6 | Riccardo Patrese | Williams • Renault | 01:19.796 | 196.250 km/h | 46 | +00.810 |
| 7 | 15 | Mauricio Gugelmin | March • Judd | 01:20.571 | 194.363 km/h | 69 | +01.585 |
| 8 | 30 | Philippe Alliot | Lola • Lamborghini | 01:20.697 | 194.059 km/h | 33 | +01.711 |
| 9 | 19 | Alessandro Nannini | Benetton • Ford Cosworth | 01:20.722 | 193.999 km/h | 43 | +01.736 |
| 10 | 7 | Martin Brundle | Brabham • Judd | 01:21.167 | 192.936 km/h | 50 | +02.181 |
| 11 | 23 | Pierluigi Martini | Minardi • Ford Cosworth | 01:21.170 | 192.928 km/h | 34 | +02.184 |
| 12 | 36 | Stefan Johansson | Onyx • Ford Cosworth | 01:21.224 | 192.800 km/h | 45 | +02.238 |
| 13 | 21 | Alex Caffi | Dallara • Ford Cosworth | 01:21.300 | 192.620 km/h | 33 | +02.314 |
| 14 | 8 | Stefano Modena | Brabham • Judd | 01:21.451 | 192.263 km/h | 64 | +02.465 |
| 15 | 3 | Jonathan Palmer | Tyrrell • Ford Cosworth | 01:21.562 | 192.001 km/h | 34 | +02.576 |
| 16 | 25 | René Arnoux | Ligier • Ford Cosworth | 01:21.603 | 191.905 km/h | 63 | +02.617 |
| 17 | 29 | Michele Alboreto | Lola • Lamborghini | 01:21.756 | 191.546 km/h | 56 | +02.770 |
| 18 | 12 | Satoru Nakajima | Lotus • Judd | 01:21.794 | 191.457 km/h | 39 | +02.808 |
| 19 | 24 | Luis Perez-Sala | Minardi • Ford Cosworth | 01:22.114 | 190.710 km/h | 60 | +03.128 |
| 20 | 11 | Nelson Piquet | Lotus • Judd | 01:22.356 | 190.150 km/h | 22 | +03.370 |
| 21 | 16 | Ivan Capelli | March • Judd | 01:22.873 | 188.964 km/h | 18 | +03.887 |
| 22 | 9 | Derek Warwick | Arrows • Ford Cosworth | 01:22.926 | 188.843 km/h | 27 | +03.940 |
| 23 | 22 | Andrea de Cesaris | Dallara • Ford Cosworth | 01:23.592 | 187.339 km/h | 4 | +04.606 |
| 24 | 10 | Eddie Cheever | Arrows • Ford Cosworth | 01:23.732 | 187.025 km/h | 7 | +04.746 |
| 25 | 20 | Emanuele Pirro | Benetton • Ford Cosworth | 01:24.080 | 186.251 km/h | 3 | +05.094 |
| 26 | 31 | Roberto Moreno | Coloni • Ford Cosworth | 01:25.411 | 183.349 km/h | 10 | +06.425 |