1991 Season

16 rounds. Senna won the title by 24 points over Mansell; McLaren won the constructors' championship by 14.

1991 race calendar with winners
Rd	Grand Prix	Date	Winner	Team	Laps	Time
1	United States Grand Prix	10 Mar	Ayrton Senna	McLaren	81	2:00:47.828
2	Brazilian Grand Prix	24 Mar	Ayrton Senna	McLaren	71	1:38:28.128
3	San Marino Grand Prix	28 Apr	Ayrton Senna	McLaren	61	1:35:14.750
4	Monaco Grand Prix	12 May	Ayrton Senna	McLaren	78	1:53:02.334
5	Canadian Grand Prix	2 Jun	Nelson Piquet	Benetton	69	1:38:51.490
6	Mexican Grand Prix	16 Jun	Riccardo Patrese	Williams	67	1:29:52.205
7	French Grand Prix	7 Jul	Nigel Mansell	Williams	72	1:38:00.056
8	British Grand Prix	14 Jul	Nigel Mansell	Williams	59	1:27:35.479
9	German Grand Prix	28 Jul	Nigel Mansell	Williams	45	1:19:29.661
10	Hungarian Grand Prix	11 Aug	Ayrton Senna	McLaren	77	1:49:12.796
11	Belgian Grand Prix	25 Aug	Ayrton Senna	McLaren	44	1:27:17.669
12	Italian Grand Prix	8 Sep	Nigel Mansell	Williams	53	1:17:54.319
13	Portuguese Grand Prix	22 Sep	Riccardo Patrese	Williams	71	1:35:42.304
14	Spanish Grand Prix	29 Sep	Nigel Mansell	Williams	65	1:38:41.541
15	Japanese Grand Prix	20 Oct	Gerhard Berger	McLaren	53	1:32:10.695
16	Australian Grand Prix	3 Nov	Ayrton Senna	McLaren	14	24:34.899

1991 drivers' championship standings
Pos	Driver	Nationality	Team	Pts	Gap
1	Ayrton Senna	Brazilian	McLaren	96
2	Nigel Mansell	British	Williams	72	−24
3	Riccardo Patrese	Italian	Williams	53	−43
4	Gerhard Berger	Austrian	McLaren	43	−53
5	Alain Prost	French	Ferrari	34	−62
6	Nelson Piquet	Brazilian	Benetton	26.5	−69.5
7	Jean Alesi	French	Ferrari	21	−75
8	Stefano Modena	Italian	Tyrrell	10	−86
9	Andrea de Cesaris	Italian	Jordan	9	−87
10	Roberto Moreno	Brazilian	Minardi	8	−88
11	Pierluigi Martini	Italian	Minardi	6	−90
12	Jyrki Järvilehto	Finnish	Dallara	4	−92
13	Bertrand Gachot	Belgian	Larrousse	4	−92
14	Michael Schumacher	German	Benetton	4	−92
15	Satoru Nakajima	Japanese	Tyrrell	2	−94
16	Mika Häkkinen	Finnish	Team Lotus	2	−94
17	Martin Brundle	British	Brabham	2	−94
18	Emanuele Pirro	Italian	Dallara	1	−95
19	Mark Blundell	British	Brabham	1	−95
20	Ivan Capelli	Italian	Leyton House	1	−95
21	Éric Bernard	French	Lola	1	−95
22	Aguri Suzuki	Japanese	Larrousse	1	−95
23	Julian Bailey	British	Team Lotus	1	−95
24	Gianni Morbidelli	Italian	Ferrari	0.5	−95.5
25	Maurício Gugelmin	Brazilian	Leyton House	0	−96
26	Thierry Boutsen	Belgian	Ligier	0	−96
27	Johnny Herbert	British	Team Lotus	0	−96
28	Nicola Larini	Italian	Lambo	0	−96
29	Érik Comas	French	Ligier	0	−96
30	Gabriele Tarquini	Italian	Fondmetal	0	−96
31	Alessandro Zanardi	Italian	Jordan	0	−96
32	Eric van de Poele	Belgian	Lambo	0	−96
33	Alex Caffi	Italian	Footwork	0	−96
34	Olivier Grouillard	French	AGS	0	−96
35	Michele Alboreto	Italian	Footwork	0	−96
36	Karl Wendlinger	Austrian	Leyton House	0	−96
37	Stefan Johansson	Swedish	Footwork	0	−96
38	Fabrizio Barbazza	Italian	AGS	0	−96
39	Michael Bartels	German	Team Lotus	0	−96
40	Naoki Hattori	Japanese	Coloni	0	−96
41	Pedro Chaves	Portuguese	Coloni	0	−96

1991 constructors' championship standings
Pos	Team	Pts	Gap
1	McLaren	139
2	Williams	125	−14
3	Ferrari	55.5	−83.5
4	Benetton	38.5	−100.5
5	Jordan	13	−126
6	Tyrrell	12	−127
7	Minardi	6	−133
8	Dallara	5	−134
9	Team Lotus	3	−136
10	Brabham	3	−136
11	Leyton House	1	−138
12	Lola	1	−138
13	Larrousse	1	−138
14	Ligier	0	−139
15	Lambo	0	−139
16	AGS	0	−139
17	Fondmetal	0	−139
18	Footwork	0	−139
19	Coloni	0	−139