Autodromo Enzo e Dino Ferrari · Imola, Italy
Nelson Piquet won the 1981 San Marino Grand Prix for Brabham, finishing 4.580 seconds ahead of Riccardo Patrese (Arrows), with Carlos Reutemann (Williams) completing the podium. Gilles Villeneuve had taken pole position.
It was round 4 of 15 of the 1981 Formula 1 World Championship, held at Autodromo Enzo e Dino Ferrari in Imola, Italy on 3 May 1981.
After round 4, Carlos Reutemann led the 1981 drivers' championship on 25 points, 3 ahead of Nelson Piquet. Williams led the constructors' standings on 43 points.
The 1981 San Marino Grand Prix took place on 3 May 1981. It was round 4 of 15 of the 1981 Formula 1 calendar.
The 1981 San Marino Grand Prix was held at Autodromo Enzo e Dino Ferrari in Imola, Italy.
Nelson Piquet won the 1981 San Marino Grand Prix for Brabham, ahead of and .
| Pos | Driver | Time / gap | Pts |
|---|---|---|---|
| 1 |
Gilles Villeneuve (Ferrari) started from pole position.
Nelson Piquet won the 1980 Italian Grand Prix at Autodromo Enzo e Dino Ferrari for Brabham.
| 9 |
| 2 | +4.580 | 6 |
| 3 | +6.340 | 4 |
| 4 | +22.890 | 3 |
| 5 | +25.870 | 2 |
| 6 | +1:06.610 | 1 |
| 7 | +1:41.970 | – |
| 8 | +1 Lap | – |
| 9 | +1 Lap | – |
| 10 | +2 Laps | – |
| 11 | +2 Laps | – |
| 12 | +2 Laps | – |
| 13 | +3 Laps | – |
| R | Not classified | – |
| R | Spun off | – |
| R | Collision | – |
| R | Collision | – |
| R | Collision | – |
| R | Collision | – |
| R | Gearbox | – |
| R | Engine | – |
| R | Suspension | – |
| R | Gearbox | – |
| R | Accident | – |
| R | Retired | – |
| W | Withdrew | – |
| W | Withdrew | – |