Race Result
| GP n. 406 - 21/04/1985 - Grand Prix of Portugal Autodromo do Estoril |
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| Winner: | Ayrton Senna / Lotus-Renault - 2:00'28.006 | ||||||
| Pole Position: | Ayrton Senna / Lotus-Renault - 1:21.007 | ||||||
| Fastest Lap: | Ayrton Senna / Lotus-Renault - 1:44.121 | ||||||
| Pos | Nš | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| 1 | 12 |  Ayrton Senna |
Lotus-Renault | 67 | 2:00'28.006 | 1 | 9 |
| 2 | 27 |  Michele Alboreto |
Ferrari | 67 | + 1'02.978 | 5 | 6 |
| 3 | 15 |  Patrick Tambay |
Renault | 66 | + 1 lap | 12 | 4 |
| 4 | 11 | Elio de Angelis |
Lotus-Renault | 66 | + 1 lap | 4 | 3 |
| 5 | 5 |  Nigel Mansell |
Williams-Honda | 65 | + 2 laps | 9 | 2 |
| 6 | 4 |  Stefan Bellof |
Tyrrell-Ford | 65 | + 2 laps | 21 | 1 |
| 7 | 16 | Derek Warwick |
Renault | 65 | + 2 laps | 6 | 0 |
| 8 | 28 |  Stefan Johansson |
Ferrari | 62 | + 5 laps | 11 | 0 |
| 9 | 24 | Piercarlo Ghinzani |
Osella-Alfa Romeo | 61 | + 6 laps | 26 | 0 |
| Nc | 9 | Manfred Winkelhock |
RAM-Hart | 50 | not classified | 15 | 0 |
| Ret | 1 |  Niki Lauda |
McLaren-TAG | 49 | engine | 7 | 0 |
| Ret | 23 |  Eddie Cheever |
Alfa Romeo | 36 | engine | 14 | 0 |
| Ret | 2 | Alain Prost |
McLaren-TAG | 30 | spun off | 2 | 0 |
| Ret | 25 | Andrea de Cesaris |
Ligier-Renault | 29 | tyre | 8 | 0 |
| Ret | 18 |  Thierry Boutsen |
Arrows-BMW | 28 | electrical | 10 | 0 |
| Ret | 7 | Nelson Piquet |
Brabham-BMW | 28 | tyre | 16 | 0 |
| Ret | 3 | Martin Brundle |
Tyrrell-Ford | 20 | transmission | 22 | 0 |
| Ret | 21 | Mauro Baldi |
Spirit-Hart | 19 | spun off | 24 | 0 |
| Ret | 6 |  Keke Rosberg |
Williams-Honda | 16 | spun off | 3 | 0 |
| Ret | 26 | Jacques Laffite |
Ligier-Renault | 15 | tyre | 18 | 0 |
| Ret | 17 | Gerhard Berger |
Arrows-BMW | 12 | spun off | 17 | 0 |
| Ret | 29 | Pierluigi Martini |
Minardi-Ford | 12 | spun off | 25 | 0 |
| Ret | 22 | Riccardo Patrese |
Alfa Romeo | 4 | spun off | 13 | 0 |
| Ret | 8 | Francois Hesnault |
Brabham-BMW | 3 | electrical | 19 | 0 |
| Ret | 10 | Philippe Alliot |
RAM-Hart | 3 | spun off | 20 | 0 |
| Ret | 30 | Jonathan Palmer |
Zakspeed | 2 | suspension | 23 | 0 |