Round 4 · 1981
San Marino Grand Prix
WinnerPIQBrabham · from P5
PoleVIN
Fastest lap1:48.064Villeneuve · L46
Biggest gain+12Surer P21→P9
Retirements11of 24 starters
Classification
| Pos | Driver | Team | Grid | +/− | Laps | Time / Status | Pits | Pts |
|---|---|---|---|---|---|---|---|---|
| 1 | Brabham | 5 | +4 | 60 | 1:51:23.970 | — | 9 | |
| 2 | Riccardo Patrese PAC | Arrows | 9 | +7 | 60 | +4.580 | — | 6 |
| 3 | Carlos Reutemann REU | Williams | 2 | -1 | 60 | +6.340 | — | 4 |
| 4 | Hector Rebaque REB | Brabham | 13 | +9 | 60 | +22.890 | — | 3 |
| 5 | Didier Pironi PIR | Ferrari | 6 | +1 | 60 | +25.870 | — | 2 |
| 6 | McLaren | 14 | +8 | 60 | +1:06.610 | — | 1 | |
| 7 | Ferrari | 1 | -6 | 60 | +1:41.970 FL | — | ||
| 8 | Toleman | 3 | -5 | 59 | +1 lap | — | ||
| 9 | Marc Surer SUR | Ensign | 21 | +12 | 59 | +1 lap | — | |
| 10 | John Watson WAT | McLaren | 7 | -3 | 58 | +2 laps | — | |
| 11 | Patrick Tambay TAM | Theodore | 16 | +5 | 58 | +2 laps | — | |
| 12 | Alan Jones JOE | Williams | 8 | -4 | 58 | +2 laps | — | |
| 13 | Slim Borgudd BOR | ATS | 24 | +11 | 57 | +3 laps | — | |
| — | Eddie Cheever Jr CHE | Tyrrell | 19 | 28 | DNF · L28 | — | ||
| — | Eliseo Salazar SAA | March | 23 | 38 | DNF · L38 | — | ||
| — | Mario Andretti ANI | Alfa Romeo (1979–85) | 12 | 26 | DNF · L26 | — | ||
| — | Jacques Laffite LAF | Ligier | 10 | 7 | DNF · L7 | — | ||
| — | Ligier | 18 | 45 | NC · L45 | — | |||
| — | Brian Henton HEN | Toleman | — | 0 | DNQ | — | ||
| — | Bruno Giacomelli GIA | Alfa Romeo (1979–85) | 11 | 28 | DNF · L28 | — | ||
| — | Keke Rosberg ROG | Fittipaldi | 15 | 14 | DNF · L14 | — | ||
| — | Derek Daly DAD | March | — | 0 | DNQ | — | ||
| — | Beppe Gabbiani GAB | Osella | 20 | 31 | DNF · L31 | — | ||
| — | Jan Lammers LAM | ATS | — | 0 | DNQ | — | ||
| — | Alain Prost PRO | Toleman | 4 | 3 | DNF · L3 | — | ||
| — | Siegfried Stohr STH | Arrows | — | 0 | DNQ | — | ||
| — | Chico Serra SER | Fittipaldi | — | 0 | DNQ | — | ||
| — | Osella | 22 | 0 | DNF · L0 | — | |||
| — | Michele Alboreto ALB | Tyrrell | 17 | 31 | DNF · L31 | — | ||
| — | Derek Warwick WAW | Toleman | — | 0 | DNQ | — |
Session schedule
Grand PrixFinal
Championship after round 4
| Pos | Driver | Pts | Δ |
|---|---|---|---|
| 1 | Carlos Reutemann REU | 25 | |
| 2 | 22 | ▲1 | |
| 3 | Alan Jones JOE | 18 | ▼1 |
| 4 | Riccardo Patrese PAC | 10 | |
| 5 | Alain Prost PRO | 4 | |
| 6 | Hector Rebaque REB | 3 | ▲10 |
| 7 | Elio de Angelis DEA | 3 | ▼1 |
| 8 | Marc Surer SUR | 3 | ▼1 |
Running totals from published race points.
Recent winners at Imola Circuit
Circuit DNA| Season | Event | Winner | Team | Grid |
|---|---|---|---|---|
| 1980 | Italian Grand Prix | Brabham | 5 |