| «1988-13» | Portugal Grand Prix - XVII Grande Premio de Portugal |
| 1988-09-25 | 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 | 1 | 11 | Alain Prost | McLaren • Honda | 70 | 1:37:40.958 | 187.034 km/h | 9 |
| 2 | 3 | 16 | Ivan Capelli | March • Judd | 70 | +09.553 | +09.553 | 6 |
| 3 | 13 | 20 | Thierry Boutsen | Benetton • Ford Cosworth | 70 | +44.619 | +35.066 | 4 |
| 4 | 10 | 17 | Derek Warwick | Arrows • Megatron | 70 | +01:07.419 | +22.800 | 3 |
| 5 | 7 | 27 | Michele Alboreto | Ferrari | 70 | +01:11.884 | +04.465 | 2 |
| 6 | 2 | 12 | Ayrton Senna | McLaren • Honda | 70 | +01:18.269 | +06.385 | 1 |
| 7 | 17 | 36 | Alex Caffi | Dallara • Ford Cosworth | 69 | +1 lap | ||
| 8 | 19 | 24 | Luis Perez-Sala | Minardi • Ford Cosworth | 68 | +2 laps | ||
| 9 | 21 | 14 | Philippe Streiff | AGS • Ford Cosworth | 68 | +2 laps | ||
| 10 | 23 | 25 | René Arnoux | Ligier • Judd | 68 | +2 laps | ||
| 11 | 26 | 31 | Gabriele Tarquini | Coloni • Ford Cosworth | 65 | +5 laps | ||
| 12 | 25 | 21 | Nicola Larini | Osella | 63 | +7 laps | ||
| 5 | 15 | Mauricio Gugelmin | March • Judd | 59 | engine | |||
| 6 | 5 | Nigel Mansell | Williams • Judd | 54 | collision | |||
| 22 | 3 | Jonathan Palmer | Tyrrell • Ford Cosworth | 53 | overheating | |||
| 9 | 19 | Alessandro Nannini | Benetton • Ford Cosworth | 52 | vibration | |||
| 4 | 28 | Gerhard Berger | Ferrari | 35 | spin | |||
| 8 | 1 | Nelson Piquet | Lotus • Honda | 34 | clutch | |||
| 11 | 6 | Riccardo Patrese | Williams • Judd | 29 | radiator | |||
| 14 | 23 | Pierluigi Martini | Minardi • Ford Cosworth | 27 | engine | |||
| 15 | 29 | Yannick Dalmas | Lola • Ford Cosworth | 20 | alternator | |||
| 16 | 2 | Satoru Nakajima | Lotus • Honda | 16 | accident | |||
| 12 | 22 | Andrea de Cesaris | Rial • Ford Cosworth | 11 | drive shaft | |||
| 18 | 18 | Eddie Cheever | Arrows • Megatron | 10 | turbo | |||
| 20 | 30 | Philippe Alliot | Lola • Ford Cosworth | 7 | engine | |||
| 24 | 26 | Stefan Johansson | Ligier • Judd | 4 | engine | |||
| DNQ | 4 | Julian Bailey | Tyrrell • Ford Cosworth | |||||
| DNQ | 9 | Piercarlo Ghinzani | Zakspeed | |||||
| DNQ | 33 | Stefano Modena | Eurobrun • Ford Cosworth | |||||
| DNQ | 10 | Bernd Schneider | Zakspeed | |||||
| DNP | 32 | Oscar Larrauri | Eurobrun • Ford Cosworth |
Fastest lap - 01:21.961 - 191.066 km/h - Gerhard Berger (lap 31)