PORTUGUESE GRAND PRIX - FASTEST LAPS
22 Sep 1991
Autódromo do Estoril, Portugal
| Pos. | No. | Driver | Team | Lap | Time |
|---|---|---|---|---|---|
| 1 | 5 | Nigel MansellMAN | Williams Renault | 36 | 1:18.179 |
| 2 | 6 | Riccardo PatresePAT | Williams Renault | 38 | 1:18.350 |
| 3 | 2 | Gerhard BergerBER | McLaren Honda | 36 | 1:18.856 |
| 4 | 1 | Ayrton SennaSEN | McLaren Honda | 50 | 1:18.929 |
| 5 | 20 | Nelson PiquetPIQ | Benetton Ford | 45 | 1:19.073 |
| 6 | 19 | Michael SchumacherMSC | Benetton Ford | 68 | 1:19.206 |
| 7 | 33 | Andrea de CesarisDEC | Jordan Ford | 48 | 1:19.210 |
| 8 | 28 | Jean AlesiALE | Ferrari | 55 | 1:19.418 |
| 9 | 16 | Ivan CapelliCAP | Leyton House Ilmor | 45 | 1:19.519 |
| 10 | 27 | Alain ProstPRO | Ferrari | 33 | 1:19.531 |
| 11 | 23 | Pierluigi MartiniMAR | Minardi Ferrari | 57 | 1:19.581 |
| 12 | 15 | Mauricio GugelminGUG | Leyton House Ilmor | 65 | 1:19.757 |
| 13 | 9 | Michele AlboretoALB | Footwork Porsche | 60 | 1:20.082 |
| 14 | 32 | Roberto MorenoMOR | Jordan Ford | 57 | 1:20.096 |
| 15 | 4 | Stefano ModenaMOD | Tyrrell Honda | 30 | 1:20.342 |
| 16 | 24 | Gianni MorbidelliMOR | Minardi Ferrari | 56 | 1:20.357 |
| 17 | 11 | Mika HakkinenHAK | Lotus Judd | 35 | 1:20.445 |
| 18 | 7 | Martin BrundleBRU | Brabham Yamaha | 27 | 1:20.480 |
| 19 | 25 | Thierry BoutsenBOU | Ligier Lamborghini | 38 | 1:20.700 |
| 20 | 26 | Erik ComasCOM | Ligier Lamborghini | 43 | 1:20.781 |
| 21 | 30 | Aguri SuzukiSUZ | Lola Ford | 33 | 1:21.586 |
| 22 | 3 | Satoru NakajimaNAK | Tyrrell Honda | 41 | 1:21.966 |
| 23 | 22 | Jyrki JarvilehtoJAR | Dallara Judd | 13 | 1:22.165 |
| 24 | 21 | Emanuele PirroPIR | Dallara Judd | 11 | 1:22.592 |
| 25 | 8 | Mark BlundellBLU | Brabham Yamaha | 12 | 1:22.801 |
| 26 | 12 | Johnny HerbertHER | Lotus Judd | 1 | 1:39.804 |