| «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 | Grid | Car | Driver | Constructor | Q1 | Q2 | Best | Gap | Interval |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 12 | Ayrton Senna | Lotus • Renault | 01:19.943 | 01:16.673 | 01:16.673 | 204.244 km/h | |
| 2 | 2 | 5 | Nigel Mansell | Williams • Honda | 01:19.047 | 01:17.489 | 01:17.489 | +00.816 (+1.064%) | +00.816 |
| 3 | 3 | 1 | Alain Prost | McLaren • TAG Porsche | 01:19.692 | 01:17.710 | 01:17.710 | +01.037 (+1.352%) | +00.221 |
| 4 | 4 | 20 | Gerhard Berger | Benetton • BMW | 01:19.923 | 01:17.742 | 01:17.742 | +01.069 (+1.394%) | +00.032 |
| 5 | 5 | 19 | Teo Fabi | Benetton • BMW | 01:20.957 | 01:18.071 | 01:18.071 | +01.398 (+1.823%) | +00.329 |
| 6 | 6 | 6 | Nelson Piquet | Williams • Honda | 01:19.410 | 01:18.180 | 01:18.180 | +01.507 (+1.965%) | +00.109 |
| 7 | 7 | 2 | Keke Rosberg | McLaren • TAG Porsche | 01:20.556 | 01:18.360 | 01:18.360 | +01.687 (+2.200%) | +00.180 |
| 8 | 8 | 28 | Stefan Johansson | Ferrari | 01:21.621 | 01:19.332 | 01:19.332 | +02.659 (+3.468%) | +00.972 |
| 9 | 9 | 7 | Riccardo Patrese | Brabham • BMW | 01:21.257 | 01:19.637 | 01:19.637 | +02.964 (+3.866%) | +00.305 |
| 10 | 10 | 25 | René Arnoux | Ligier • Renault | 01:21.876 | 01:19.657 | 01:19.657 | +02.984 (+3.892%) | +00.020 |
| 11 | 11 | 26 | Philippe Alliot | Ligier • Renault | 01:21.693 | 01:19.769 | 01:19.769 | +03.096 (+4.038%) | +00.112 |
| 12 | 12 | 8 | Derek Warwick | Brabham • BMW | 01:23.455 | 01:19.882 | 01:19.882 | +03.209 (+4.185%) | +00.113 |
| 13 | 13 | 27 | Michele Alboreto | Ferrari | 01:21.123 | 01:20.019 | 01:20.019 | +03.346 (+4.364%) | +00.137 |
| 14 | 14 | 16 | Patrick Tambay | Lola • Ford Cosworth | 01:22.396 | 01:20.761 | 01:20.761 | +04.088 (+5.332%) | +00.742 |
| 15 | 15 | 11 | Johnny Dumfries | Lotus • Renault | 01:23.778 | 01:21.594 | 01:21.594 | +04.921 (+6.418%) | +00.833 |
| 16 | 16 | 23 | Andrea de Cesaris | Minardi • Motori Moderni | 01:23.361 | 01:21.611 | 01:21.611 | +04.938 (+6.440%) | +00.017 |
| 17 | 17 | 15 | Alan Jones | Lola • Ford Cosworth | 01:22.612 | 01:21.646 | 01:21.646 | +04.973 (+6.486%) | +00.035 |
| 18 | 18 | 24 | Alessandro Nannini | Minardi • Motori Moderni | 01:24.724 | 01:21.702 | 01:21.702 | +05.029 (+6.559%) | +00.056 |
| 19 | 19 | 3 | Martin Brundle | Tyrrell • Renault | 01:25.114 | 01:21.835 | 01:21.835 | +05.162 (+6.732%) | +00.133 |
| 20 | 20 | 14 | Jonathan Palmer | Zakspeed | 01:23.941 | 01:21.929 | 01:21.929 | +05.256 (+6.855%) | +00.094 |
| 21 | 21 | 18 | Thierry Boutsen | Arrows • BMW | 01:23.412 | 01:22.068 | 01:22.068 | +05.395 (+7.036%) | +00.139 |
| 22 | 22 | 17 | Christian Danner | Arrows • BMW | 01:24.665 | 01:22.274 | 01:22.274 | +05.601 (+7.305%) | +00.206 |
| 23 | 23 | 4 | Philippe Streiff | Tyrrell • Renault | 01:23.895 | 01:22.388 | 01:22.388 | +05.715 (+7.454%) | +00.114 |
| 24 | 24 | 21 | Piercarlo Ghinzani | Osella • Alfa Romeo | 01:26.552 | 01:23.566 | 01:23.566 | +06.893 (+8.990%) | +01.178 |
| 25 | 25 | 31 | Ivan Capelli | AGS • Motori Moderni | 01:25.795 | 01:23.987 | 01:23.987 | +07.314 (+9.539%) | +00.421 |
| 26 | 26 | 29 | Huub Rothengatter | Zakspeed | 01:25.928 | 01:24.105 | 01:24.105 | +07.432 (+9.693%) | +00.118 |
| 27 | 27 | 22 | Allen Berg | Osella • Alfa Romeo | 01:29.724 | 01:26.861 | 01:26.861 | +10.188 (+13.288%) | +02.756 |