# 1986 Portuguese Grand Prix

The 1986 Portuguese Grand Prix was a Formula One motor race held at Estoril on 21 September 1986. It was the fourteenth race of the 1986 FIA Formula One World Championship.
The 70-lap race was won by British driver Nigel Mansell, driving a Williams-Honda. Brazilian Ayrton Senna took pole position in his Lotus-Renault, but Mansell passed him at the start and led the entire race, also setting the fastest race lap. Senna held on to second place until he ran out of fuel on the final lap and dropped to fourth, promoting Frenchman Alain Prost in the McLaren-TAG to second and Mansell's Brazilian teammate Nelson Piquet to third.
The win, Mansell's fifth of the season, gave him a ten-point lead in the Drivers' Championship with two races remaining, with Piquet second and Prost a further point back in third. Senna's final-lap misfortune ended his challenge for the title. The win also secured the Constructors' Championship for Williams, their third in all.

## Classification
### Qualifying

| Pos | No | Driver | Constructor | Q1 | Q2 | Gap |
| 1 | 12 | Ayrton Senna | Lotus-Renault | 1:19.943 | 1:16.673 | |
| 2 | 5 | Nigel Mansell | Williams-Honda | 1:19.047 | 1:17.489 | +0.816 |
| 3 | 1 | Alain Prost | McLaren-TAG | 1:19.692 | 1:17.710 | +1.037 |
| 4 | 20 | Gerhard Berger | Benetton-BMW | 1:19.923 | 1:17.742 | +1.069 |
| 5 | 19 | Teo Fabi | Benetton-BMW | 1:20.957 | 1:18.071 | +1.398 |
| 6 | 6 | Nelson Piquet | Williams-Honda | 1:19.410 | 1:18.180 | +1.507 |
| 7 | 2 | Keke Rosberg | McLaren-TAG | 1:20.556 | 1:18.360 | +1.687 |
| 8 | 28 | Stefan Johansson | Ferrari | 1:21.621 | 1:19.332 | +2.659 |
| 9 | 7 | Riccardo Patrese | Brabham-BMW | 1:21.257 | 1:19.637 | +2.964 |
| 10 | 25 | René Arnoux | Ligier-Renault | 1:21.876 | 1:19.657 | +2.984 |
| 11 | 26 | Philippe Alliot | Ligier-Renault | 1:21.693 | 1:19.769 | +3.096 |
| 12 | 8 | Derek Warwick | Brabham-BMW | 1:23.455 | 1:19.882 | +3.209 |
| 13 | 27 | Michele Alboreto | Ferrari | 1:21.123 | 1:20.019 | +3.346 |
| 14 | 16 | Patrick Tambay | Lola-Ford | 1:22.396 | 1:20.761 | +4.088 |
| 15 | 11 | Johnny Dumfries | Lotus-Renault | 1:23.778 | 1:21.594 | +4.921 |
| 16 | 23 | Andrea de Cesaris | Minardi-Motori Moderni | 1:23.361 | 1:21.611 | +4.938 |
| 17 | 15 | Alan Jones | Lola-Ford | 1:22.612 | 1:21.646 | +4.973 |
| 18 | 24 | Alessandro Nannini | Minardi-Motori Moderni | 1:24.724 | 1:21.702 | +5.029 |
| 19 | 3 | Martin Brundle | Tyrrell-Renault | 1:25.114 | 1:21.835 | +5.162 |
| 20 | 14 | Jonathan Palmer | Zakspeed | 1:23.941 | 1:21.929 | +5.256 |
| 21 | 18 | Thierry Boutsen | Arrows-BMW | 1:23.412 | 1:22.068 | +5.395 |
| 22 | 17 | Christian Danner | Arrows-BMW | 1:24.665 | 1:22.274 | +5.601 |
| 23 | 4 | Philippe Streiff | Tyrrell-Renault | 1:23.895 | 1:22.388 | +5.715 |
| 24 | 21 | Piercarlo Ghinzani | Osella-Alfa Romeo | 1:26.552 | 1:23.566 | +6.893 |
| 25 | 31 | Ivan Capelli | AGS-Motori Moderni | 1:25.795 | 1:23.987 | +7.314 |
| 26 | 29 | Huub Rothengatter | Zakspeed | 1:25.928 | 1:24.105 | +7.432 |
| 27 | 22 | Allen Berg | Osella-Alfa Romeo | 1:29.724 | 1:26.861 | +10.188 |

### Race

| Pos | No | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| 1 | 5 | Nigel Mansell | Williams-Honda | 70 | 1:37:21.900 | 2 | 9 |
| 2 | 1 | Alain Prost | McLaren-TAG | 70 | + 18.772 | 3 | 6 |
| 3 | 6 | Nelson Piquet | Williams-Honda | 70 | + 49.274 | 6 | 4 |
| 4 | 12 | Ayrton Senna | Lotus-Renault | 69 | Out of Fuel | 1 | 3 |
| 5 | 27 | Michele Alboreto | Ferrari | 69 | + 1 Lap | 13 | 2 |
| 6 | 28 | Stefan Johansson | Ferrari | 69 | + 1 Lap | 8 | 1 |
| 7 | 25 | René Arnoux | Ligier-Renault | 69 | + 1 Lap | 10 | |
| 8 | 19 | Teo Fabi | Benetton-BMW | 68 | + 2 Laps | 5 | |
| 9 | 11 | Johnny Dumfries | Lotus-Renault | 68 | + 2 Laps | 15 | |
| 10 | 18 | Thierry Boutsen | Arrows-BMW | 67 | + 3 Laps | 21 | |
| 11 | 17 | Christian Danner | Arrows-BMW | 67 | + 3 Laps | 22 | |
| 12 | 14 | Jonathan Palmer | Zakspeed | 67 | + 3 Laps | 20 | |
| 13 | 22 | Allen Berg | Osella-Alfa Romeo | 63 | + 7 Laps | 27 | |
| Ret | 7 | Riccardo Patrese | Brabham-BMW | 62 | Engine | 9 | |
| NC | 16 | Patrick Tambay | Lola-Ford | 62 | + 8 Laps | 14 | |
| Ret | 24 | Alessandro Nannini | Minardi-Motori Moderni | 60 | Gearbox | 18 | |
| Ret | 20 | Gerhard Berger | Benetton-BMW | 44 | Spun Off | 4 | |
| Ret | 23 | Andrea de Cesaris | Minardi-Motori Moderni | 43 | Spun Off | 16 | |
| Ret | 2 | Keke Rosberg | McLaren-TAG | 41 | Electrical | 7 | |
| Ret | 8 | Derek Warwick | Brabham-BMW | 41 | Electrical | 12 | |
| Ret | 26 | Philippe Alliot | Ligier-Renault | 39 | Engine | 11 | |
| Ret | 4 | Philippe Streiff | Tyrrell-Renault | 28 | Engine | 23 | |
| Ret | 3 | Martin Brundle | Tyrrell-Renault | 18 | Engine | 19 | |
| Ret | 15 | Alan Jones | Lola-Ford | 10 | Brakes/Spin | 17 | |
| Ret | 29 | Huub Rothengatter | Zakspeed | 9 | Transmission | 26 | |
| Ret | 21 | Piercarlo Ghinzani | Osella-Alfa Romeo | 8 | Engine | 24 | |
| Ret | 31 | Ivan Capelli | AGS-Motori Moderni | 6 | Transmission | 25 | |
| Source: ||||||||

## Championship standings after the race

* Bold text indicates the World Champions.
| Pos | Driver | Points |
| 1 | Nigel Mansell | 70 |
| 2 | Nelson Piquet | 60 |
| 3 | Alain Prost | 59 |
| 4 | Ayrton Senna | 51 |
| 5 | Keke Rosberg | 22 |
| Source: |||
| Pos | Constructor | Points |
| 1 | Williams-Honda | 130 |
| 2 | McLaren-TAG | 81 |
| 3 | Lotus-Renault | 53 |
| 4 | Ferrari | 33 |
| 5 | Ligier-Renault | 28 |
| Source: |||
* Note: Only the top five positions are included for both sets of standings.