| «1990-13» | Portugal Grand Prix - XIX Grande Premio de Portugal |
| 1990-09-23 | Estoril - Autódromo Fernanda Pires da Silva - 61 laps × 4.35 km : 265.35 km |
| Pos | Car | Driver | Constructor | Time | Speed | Lap | Gap |
|---|---|---|---|---|---|---|---|
| 1 | 6 | Riccardo Patrese | Williams • Renault | 01:18.306 | 199.985 km/h | 56 | |
| 2 | 19 | Alessandro Nannini | Benetton • Ford Cosworth | 01:18.355 | 199.860 km/h | 59 | +00.049 |
| 3 | 1 | Alain Prost | Ferrari | 01:18.396 | 199.755 km/h | 52 | +00.090 |
| 4 | 28 | Gerhard Berger | McLaren • Honda | 01:18.438 | 199.648 km/h | 52 | +00.132 |
| 5 | 2 | Nigel Mansell | Ferrari | 01:18.577 | 199.295 km/h | 49 | +00.271 |
| 6 | 27 | Ayrton Senna | McLaren • Honda | 01:18.936 | 198.389 km/h | 48 | +00.630 |
| 7 | 20 | Nelson Piquet | Benetton • Ford Cosworth | 01:19.713 | 196.455 km/h | 54 | +01.407 |
| 8 | 30 | Aguri Suzuki | Lola • Lamborghini | 01:20.349 | 194.900 km/h | 41 | +02.043 |
| 9 | 5 | Thierry Boutsen | Williams • Renault | 01:20.575 | 194.353 km/h | 29 | +02.269 |
| 10 | 9 | Michele Alboreto | Arrows • Ford Cosworth | 01:20.792 | 193.831 km/h | 55 | +02.486 |
| 11 | 26 | Philippe Alliot | Ligier • Ford Cosworth | 01:20.914 | 193.539 km/h | 41 | +02.608 |
| 12 | 4 | Jean Alesi | Tyrrell • Ford Cosworth | 01:20.916 | 193.534 km/h | 32 | +02.610 |
| 13 | 25 | Nicola Larini | Ligier • Ford Cosworth | 01:20.958 | 193.434 km/h | 55 | +02.652 |
| 14 | 23 | Pierluigi Martini | Minardi • Ford Cosworth | 01:21.186 | 192.890 km/h | 35 | +02.880 |
| 15 | 16 | Ivan Capelli | Leyton House • Judd | 01:21.623 | 191.858 km/h | 47 | +03.317 |
| 16 | 10 | Alex Caffi | Arrows • Ford Cosworth | 01:21.843 | 191.342 km/h | 49 | +03.537 |
| 17 | 15 | Mauricio Gugelmin | Leyton House • Judd | 01:21.894 | 191.223 km/h | 32 | +03.588 |
| 18 | 21 | Emanuele Pirro | Dallara • Ford Cosworth | 01:22.231 | 190.439 km/h | 40 | +03.925 |
| 19 | 7 | David Brabham | Brabham • Judd | 01:22.275 | 190.337 km/h | 28 | +03.969 |
| 20 | 29 | Eric Bernard | Lola • Lamborghini | 01:22.434 | 189.970 km/h | 21 | +04.128 |
| 21 | 12 | Martin Donnelly | Lotus • Lamborghini | 01:22.625 | 189.531 km/h | 11 | +04.319 |
| 22 | 8 | Stefano Modena | Brabham • Judd | 01:23.232 | 188.149 km/h | 18 | +04.926 |
| 23 | 11 | Derek Warwick | Lotus • Lamborghini | 01:23.510 | 187.522 km/h | 4 | +05.204 |
| 24 | 18 | Yannick Dalmas | AGS • Ford Cosworth | 01:24.879 | 184.498 km/h | 3 | +06.573 |