| «1984-16» | Portugal Grand Prix - XIII Grande Premio de Portugal |
| 1984-10-21 | Estoril - Autódromo Fernanda Pires da Silva - 70 laps × 4.35 km : 304.5 km |
| Pos | Grid | Car | Driver | Constructor | Laps | Time / Gap | Interval | Points |
|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 7 | Alain Prost | McLaren • TAG Porsche | 70 | 1:41:11.753 | 180.541 km/h | 9 |
| 2 | 11 | 8 | Niki Lauda | McLaren • TAG Porsche | 70 | +13.425 | +13.425 | 6 |
| 3 | 3 | 19 | Ayrton Senna | Toleman • Hart | 70 | +20.042 | +06.617 | 4 |
| 4 | 8 | 27 | Michele Alboreto | Ferrari | 70 | +20.317 | +00.275 | 3 |
| 5 | 5 | 11 | Elio de Angelis | Lotus • Renault | 70 | +01:32.169 | +01:11.852 | 2 |
| 6 | 1 | 1 | Nelson Piquet | Brabham • BMW | 69 | +1 lap | 1 | |
| 7 | 7 | 15 | Patrick Tambay | Renault | 69 | +1 lap | ||
| 8 | 12 | 22 | Riccardo Patrese | Alfa Romeo | 69 | +1 lap | ||
| 9 | 17 | 28 | René Arnoux | Ferrari | 69 | +1 lap | ||
| 10 | 19 | 2 | Manfred Winkelhock | Brabham • BMW | 69 | +1 lap | ||
| 11 | 10 | 20 | Stefan Johansson | Toleman • Hart | 69 | +1 lap | ||
| 12 | 20 | 26 | Andrea de Cesaris | Ligier • Renault | 69 | +1 lap | ||
| 13 | 23 | 14 | Gerhard Berger | ATS • BMW | 68 | +2 laps | ||
| 14 | 15 | 5 | Jacques Laffite | Williams • Honda | 67 | +3 laps | ||
| 15 | 25 | 21 | Mauro Baldi | Spirit • Hart | 66 | +4 laps | ||
| 16 | 24 | 30 | Jo Gartner | Osella • Alfa Romeo | 65 | out of fuel | ||
| 17 | 14 | 23 | Eddie Cheever | Alfa Romeo | 64 | +6 laps | ||
| 22 | 24 | Piercarlo Ghinzani | Osella • Alfa Romeo | 60 | engine | |||
| 6 | 12 | Nigel Mansell | Lotus • Renault | 52 | brakes | |||
| 9 | 16 | Derek Warwick | Renault | 51 | gearbox | |||
| 13 | 33 | Philippe Streiff | Renault | 48 | transmission | |||
| 4 | 6 | Keke Rosberg | Williams • Honda | 39 | engine | |||
| 21 | 25 | François Hesnault | Ligier • Renault | 31 | electrics | |||
| 18 | 18 | Thierry Boutsen | Arrows • BMW | 24 | transmission | |||
| 26 | 10 | Jonathan Palmer | RAM • Hart | 19 | gearbox | |||
| 16 | 17 | Marc Surer | Arrows • BMW | 8 | electrics | |||
| 27 | 9 | Philippe Alliot | RAM • Hart | 2 | engine | |||
| WDR | 32 | Stefan Bellof | McLaren • TAG Porsche | not present | ||||
| WDR | 34 | Huub Rothengatter | Spirit • Hart | registration denied |
Fastest lap - 01:22.996 - 188.684 km/h - Niki Lauda (lap 51)