PORTUGUESE GRAND PRIX - WARM UP
22 Sep 1991
Autódromo do Estoril, Portugal
| Pos. | No. | Driver | Team | Time / Gap | 
|---|---|---|---|---|
| 1 | 5 | Nigel MansellMAN | Williams Renault | 1:18.769 | 
| 2 | 6 | Riccardo PatresePAT | Williams Renault | +0.023s | 
| 3 | 2 | Gerhard BergerBER | McLaren Honda | +0.157s | 
| 4 | 27 | Alain ProstPRO | Ferrari | +0.696s | 
| 5 | 24 | Gianni MorbidelliMOR | Minardi Ferrari | +0.966s | 
| 6 | 1 | Ayrton SennaSEN | McLaren Honda | +1.029s | 
| 7 | 16 | Ivan CapelliCAP | Leyton House Ilmor | +1.071s | 
| 8 | 23 | Pierluigi MartiniMAR | Minardi Ferrari | +1.167s | 
| 9 | 32 | Roberto MorenoMOR | Jordan Ford | +1.186s | 
| 10 | 33 | Andrea de CesarisDEC | Jordan Ford | +1.280s | 
| 11 | 4 | Stefano ModenaMOD | Tyrrell Honda | +1.533s | 
| 12 | 20 | Nelson PiquetPIQ | Benetton Ford | +1.570s | 
| 13 | 9 | Michele AlboretoALB | Footwork Porsche | +1.671s | 
| 14 | 7 | Martin BrundleBRU | Brabham Yamaha | +1.685s | 
| 15 | 19 | Michael SchumacherMSC | Benetton Ford | +1.708s | 
| 16 | 26 | Erik ComasCOM | Ligier Lamborghini | +1.715s | 
| 17 | 25 | Thierry BoutsenBOU | Ligier Lamborghini | +1.737s | 
| 18 | 30 | Aguri SuzukiSUZ | Lola Ford | +1.978s | 
| 19 | 28 | Jean AlesiALE | Ferrari | +2.010s | 
| 20 | 21 | Emanuele PirroPIR | Dallara Judd | +2.066s | 
| 21 | 22 | Jyrki JarvilehtoJAR | Dallara Judd | +2.093s | 
| 22 | 11 | Mika HakkinenHAK | Lotus Judd | +2.174s | 
| 23 | 15 | Mauricio GugelminGUG | Leyton House Ilmor | +2.276s | 
| 24 | 12 | Johnny HerbertHER | Lotus Judd | +2.510s | 
| 25 | 3 | Satoru NakajimaNAK | Tyrrell Honda | +2.575s | 
| 26 | 8 | Mark BlundellBLU | Brabham Yamaha | +2.749s |