Dallara
Emanuele Pirro a terminé P18 du Championnat du Monde 1991 avec 1 point. En 13 courses : 0 victoires, 0 podiums et 0 pole positions — meilleur résultat P6.
| Round | Race | Team | Grid | Finish | Points | Status |
|---|---|---|---|---|---|---|
| 1 | United States Grand Prix | Dallara | 9 | P23 | Gearbox | |
| 2 | Brazilian Grand Prix | Dallara | 12 | P11 | +3 Laps | |
| 4 | Monaco Grand Prix | Dallara | 12 | P6 | 1 | +1 Lap |
| 5 | Canadian Grand Prix | Dallara | 10 | P9 | +1 Lap | |
| 8 | British Grand Prix | Dallara | 18 | P10 |
| +2 Laps |
| 9 | German Grand Prix | Dallara | 18 | P10 | +1 Lap |
| 10 | Hungarian Grand Prix | Dallara | 7 | P25 | Engine |
| 11 | Belgian Grand Prix | Dallara | 25 | P8 | +1 Lap |
| 12 | Italian Grand Prix | Dallara | 16 | P10 | +1 Lap |
| 13 | Portuguese Grand Prix | Dallara | 16 | P23 | Engine |
| 14 | Spanish Grand Prix | Dallara | 9 | P15 | +3 Laps |
| 15 | Japanese Grand Prix | Dallara | 16 | P24 | Accident |
| 16 | Australian Grand Prix | Dallara | 13 | P7 | Finished |