- Winner
- Riccardo Patrese
- Team
- Williams
- Top listed
- Riccardo Patrese, Ayrton Senna, and Jean Alesi
- Race date
- September 22, 1991
- Pole
- Riccardo Patrese
- Fastest lap
- Nigel Mansell
- Classified drivers
- 34
- Circuit
- Autódromo do Estoril
The decisive result
Riccardo Patrese finished first for Williams. Ayrton Senna is listed 2 for McLaren, with Jean Alesi 3 for Ferrari.
Grid to finish
Érik Comas from P23 to P11 (+12), Mika Häkkinen from P26 to P14 (+12), and Michele Alboreto from P24 to P15 (+9) recorded the largest positive grid-to-finish changes in the classification. Riccardo Patrese started from the listed P1 grid position.
Status and fastest lap
The classification lists 6 Finished, 5 +1 lap, 5 Engine, 4 +3 laps, and 4 DNPQ. Nigel Mansell holds the fastest-lap entry at 1:18.179 on lap 36. It records the result without speculating about incidents or strategy.
This summary sticks to the classification and does not speculate about incidents, strategy, weather, or causes. Source: F1DB (CC BY 4.0) · updated Jul 26, 2026.