Race · Round 4 of 15 · 3 May 1981

1981 San Marino Grand Prix

Nelson Piquet won for Brabham from 5th on the grid at Autodromo Enzo e Dino Ferrari. 11 of the starters were not classified.

Circuit: Autodromo Enzo e Dino FerrariImola, Italy
Winner: Nelson PiquetBrabham
Pole: Gilles Villeneuve
Fastest lap: Gilles Villeneuve
Entries: 3013 classified

Classification

Classification
Pos	Driver	Constructor	Chassis	Grid	Laps	Out	Points	FL
1	Nelson Piquet	Brabham	BT49C	5	60	Finished	9
2	Riccardo Patrese	Arrows	A3	9	60	Finished	6
3	Carlos Reutemann	Williams	FW07C	2	60	Finished	4
4	Héctor Rebaque	Brabham	BT49C	13	60	Finished	3
5	Didier Pironi	Ferrari	126CK	6	60	Finished	2
6	Andrea de Cesaris	McLaren	—	14	60	Finished	1
7	Gilles Villeneuve	Ferrari	126CK	1	60	Finished	0	fastest lap
8	Rene Arnoux	Renault	—	3	59	Finished	0
9	Marc Surer	Ensign	N180B	21	59	Finished	0
10	John Watson	McLaren	—	7	58	Finished	0
11	Patrick Tambay	Theodore	TY01	16	58	Finished	0
12	Alan Jones	Williams	FW07C	8	58	Finished	0
13	Slim Borgudd	ATS	—	24	57	Finished	0
NC	Jean-Pierre Jabouille	Ligier	JS17	18	45	NC	0
DNF	Eliseo Salazar	March	811	23	38	Spun off	0
DNF	Michele Alboreto	Tyrrell	—	17	31	Collision	0
DNF	Beppe Gabbiani	Osella	—	20	31	Collision	0
DNF	Bruno Giacomelli	Alfa Romeo	—	11	28	Collision	0
DNF	Eddie Cheever	Tyrrell	—	19	28	Collision	0
DNF	Mario Andretti	Alfa Romeo	—	12	26	Gearbox	0
DNF	Keke Rosberg	Fittipaldi	F8C	15	14	Engine	0
DNF	Jacques Laffite	Ligier	JS17	10	7	Suspension	0
DNF	Alain Prost	Renault	—	4	3	Gearbox	0
DNF	Miguel Ángel Guerra	Osella	—	22	0	Accident	0
DNQ	Siegfried Stohr	Arrows	A3	—	—	DNQ	0
DNQ	Derek Daly	March	811	—	—	DNQ	0
DNQ	Jan Lammers	ATS	—	—	—	DNQ	0
DNQ	Chico Serra	Fittipaldi	F8C	—	—	DNQ	0
DNQ	Derek Warwick	Toleman	TG181	—	—	DNQ	0
DNQ	Brian Henton	Toleman	TG181	—	—	DNQ	0

A blank chassis is a season the team ran more than one design and no source says which car raced here.

F1DB layout imola-1 · 5.04 km · 22 turns, F1DB’s figures
F1DB, CC BY 4.0 · drawn by Jules Roy
The outline is F1DB’s, for every layout; the trace is OpenStreetMap’s, where it exists.

Grid to flag

Lines run from grid slot to result, ending at the last lap completed. A dashed line ending in a cross is a driver not classified. Nothing between is recorded, so a crossing is not an overtake at that lap.

Grid to flag
Driver	Grid	Result	Laps
Nelson Piquet	5	1	60
Riccardo Patrese	9	2	60
Carlos Reutemann	2	3	60
Héctor Rebaque	13	4	60
Didier Pironi	6	5	60
Andrea de Cesaris	14	6	60
Gilles Villeneuve	1	7	60
Rene Arnoux	3	8	59
Marc Surer	21	9	59
John Watson	7	10	58
Patrick Tambay	16	11	58
Alan Jones	8	12	58
Slim Borgudd	24	13	57
Jean-Pierre Jabouille	18	NC	45
Eliseo Salazar	23	DNF	38
Michele Alboreto	17	DNF	31
Beppe Gabbiani	20	DNF	31
Bruno Giacomelli	11	DNF	28
Eddie Cheever	19	DNF	28
Mario Andretti	12	DNF	26
Keke Rosberg	15	DNF	14
Jacques Laffite	10	DNF	7
Alain Prost	4	DNF	3
Miguel Ángel Guerra	22	DNF	0

Qualifying

Qualifying
Pos	Driver	Constructor	No.	Time	Gap	Interval
1	Gilles Villeneuve	Ferrari	27	1:34.523	—	—
2	Carlos Reutemann	Williams	2	1:35.229	+0.706	+0.706
3	Rene Arnoux	Renault	16	1:35.281	+0.758	+0.052
4	Alain Prost	Renault	15	1:35.579	+1.056	+0.298
5	Nelson Piquet	Brabham	5	1:35.733	+1.210	+0.154
6	Didier Pironi	Ferrari	28	1:35.868	+1.345	+0.135
7	John Watson	McLaren	7	1:36.241	+1.718	+0.373
8	Alan Jones	Williams	1	1:36.280	+1.757	+0.039
9	Riccardo Patrese	Arrows	29	1:36.390	+1.867	+0.110
10	Jacques Laffite	Ligier	26	1:36.477	+1.954	+0.087
11	Bruno Giacomelli	Alfa Romeo	23	1:36.776	+2.253	+0.299
12	Mario Andretti	Alfa Romeo	22	1:36.919	+2.396	+0.143
13	Héctor Rebaque	Brabham	6	1:37.264	+2.741	+0.345
14	Andrea de Cesaris	McLaren	8	1:37.382	+2.859	+0.118
15	Keke Rosberg	Fittipaldi	20	1:37.459	+2.936	+0.077
16	Patrick Tambay	Theodore	33	1:37.545	+3.022	+0.086
17	Michele Alboreto	Tyrrell	4	1:37.771	+3.248	+0.226
18	Jean-Pierre Jabouille	Ligier	25	1:38.140	+3.617	+0.369
19	Eddie Cheever	Tyrrell	3	1:38.266	+3.743	+0.126
20	Beppe Gabbiani	Osella	32	1:38.302	+3.779	+0.036
21	Marc Surer	Ensign	14	1:38.340	+3.817	+0.038
22	Miguel Ángel Guerra	Osella	31	1:38.773	+4.250	+0.433
23	Eliseo Salazar	March	17	1:38.827	+4.304	+0.054
24	Slim Borgudd	ATS	10	1:39.079	+4.556	+0.252
25	Siegfried Stohr	Arrows	30	1:39.112	+4.589	+0.033
26	Derek Daly	March	18	1:39.157	+4.634	+0.045
27	Jan Lammers	ATS	9	1:39.419	+4.896	+0.262
28	Chico Serra	Fittipaldi	21	1:41.114	+6.591	+1.695
29	Derek Warwick	Toleman	36	1:43.187	+8.664	+2.073
30	Brian Henton	Toleman	35	1:49.951	+15.428	+6.764

Before knock-out qualifying arrived in 2006 there is one time per driver; from 2006, the best lap of each of the three sessions.

Pit stops

Pit stops are recorded from 1994. F1DB, the source of every stop here, holds none before then, so this race has no stints to draw.

The cars in this race

The photograph each car's Wikipedia article leads with, from Wikimedia Commons: taken wherever and whenever that was, not necessarily at this race.

A photograph marked unchecked has a file name that does not name the car it is shown for. Most are still the right car, filed under the driver rather than the machine — but nobody has confirmed these one by one.

Where this comes from

Round: 4 of 1981
Grand Prix: San Marino Grand Prix
Dates: 3 May 1981
Layout raced: —
Format: Standard weekend
Constructor: Brabham
Entrant: Brabham-Ford
Confidence: reference

No layout is recorded for this round: this register has no layout timeline for the circuit, and a blank here is better than a guess.