| «1986-14» | Portugal Grand Prix - XV Grande Premio de Portugal |
| 1986-09-21 | Estoril - Autódromo Fernanda Pires da Silva - 70 laps × 4.35 km : 304.5 km |
| Pos | Car | Driver | Constructor | Time | Speed | Lap | Gap |
|---|---|---|---|---|---|---|---|
| 1 | 5 | Nigel Mansell | Williams • Honda | 01:20.943 | 193.469 km/h | 53 | |
| 2 | 1 | Alain Prost | McLaren • TAG Porsche | 01:21.092 | 193.114 km/h | 61 | +00.149 |
| 3 | 6 | Nelson Piquet | Williams • Honda | 01:21.100 | 193.095 km/h | 60 | +00.157 |
| 4 | 12 | Ayrton Senna | Lotus • Renault | 01:21.283 | 192.660 km/h | 60 | +00.340 |
| 5 | 27 | Michele Alboreto | Ferrari | 01:22.073 | 190.806 km/h | 58 | +01.130 |
| 6 | 2 | Keke Rosberg | McLaren • TAG Porsche | 01:22.242 | 190.414 km/h | 36 | +01.299 |
| 7 | 28 | Stefan Johansson | Ferrari | 01:22.347 | 190.171 km/h | 50 | +01.404 |
| 8 | 19 | Teo Fabi | Benetton • BMW | 01:22.999 | 188.677 km/h | 53 | +02.056 |
| 9 | 11 | Johnny Dumfries | Lotus • Renault | 01:23.737 | 187.014 km/h | 49 | +02.794 |
| 10 | 20 | Gerhard Berger | Benetton • BMW | 01:23.850 | 186.762 km/h | 26 | +02.907 |
| 11 | 16 | Patrick Tambay | Lola • Ford Cosworth | 01:23.889 | 186.675 km/h | 59 | +02.946 |
| 12 | 7 | Riccardo Patrese | Brabham • BMW | 01:24.243 | 185.891 km/h | 36 | +03.300 |
| 13 | 17 | Christian Danner | Arrows • BMW | 01:24.268 | 185.836 km/h | 64 | +03.325 |
| 14 | 18 | Thierry Boutsen | Arrows • BMW | 01:24.350 | 185.655 km/h | 52 | +03.407 |
| 15 | 25 | René Arnoux | Ligier • Renault | 01:24.356 | 185.642 km/h | 53 | +03.413 |
| 16 | 26 | Philippe Alliot | Ligier • Renault | 01:24.516 | 185.290 km/h | 38 | +03.573 |
| 17 | 14 | Jonathan Palmer | Zakspeed | 01:24.947 | 184.350 km/h | 37 | +04.004 |
| 18 | 8 | Derek Warwick | Brabham • BMW | 01:25.113 | 183.991 km/h | 18 | +04.170 |
| 19 | 15 | Alan Jones | Lola • Ford Cosworth | 01:25.681 | 182.771 km/h | 6 | +04.738 |
| 20 | 23 | Andrea de Cesaris | Minardi • Motori Moderni | 01:26.034 | 182.021 km/h | 28 | +05.091 |
| 21 | 4 | Philippe Streiff | Tyrrell • Renault | 01:26.242 | 181.582 km/h | 27 | +05.299 |
| 22 | 3 | Martin Brundle | Tyrrell • Renault | 01:26.612 | 180.806 km/h | 15 | +05.669 |
| 23 | 31 | Ivan Capelli | AGS • Motori Moderni | 01:27.861 | 178.236 km/h | 6 | +06.918 |
| 24 | 24 | Alessandro Nannini | Minardi • Motori Moderni | 01:27.910 | 178.137 km/h | 4 | +06.967 |
| 25 | 29 | Huub Rothengatter | Zakspeed | 01:28.397 | 177.155 km/h | 7 | +07.454 |
| 26 | 21 | Piercarlo Ghinzani | Osella • Alfa Romeo | 01:30.016 | 173.969 km/h | 3 | +09.073 |
| 27 | 22 | Allen Berg | Osella • Alfa Romeo | 01:30.477 | 173.083 km/h | 34 | +09.534 |