1991 Formula One World Championship

The 1991 Formula One season was the 42nd edition of the championship. The champion was Ayrton Senna. McLaren won the constructors championship.

Drivers and constructors

Entrant	Constructor	Chassis	Engine	Tyre	No	Driver	Rounds
Honda Marlboro McLaren	McLaren-Honda	MP4/6	Honda RA121E 3.5 V12	G	1	Ayrton Senna	All
					2	Gerhard Berger	All
Braun Tyrrell Honda	Tyrrell-Honda	020	Honda RA101E 3.5 V10	P	3	Satoru Nakajima	All
					4	Stefano Modena	All
Canon Williams Team	Williams-Renault	FW14	Renault RS3 3.5 V10	G	5	Nigel Mansell	All
					6	Riccardo Patrese	All
Motor Racing Developments	Brabham-Yamaha	BT59YBT60Y	Yamaha OX99 3.5 V12	P	7	Martin Brundle	All
					8	Mark Blundell	All
Footwork Grand Prix International	Footwork-Porsche	A11CFA12	Porsche 3512 3.5 V12	G	9	Michele Alboreto	1–6
					10	Alex Caffi	1–4
						Stefan Johansson	5–6
	Footwork-Ford	FA12C	Ford Cosworth DFR 3.5 V8		9	Michele Alboreto	7–16
					10	Stefan Johansson	7–8
						Alex Caffi	9–16
Team Lotus	Lotus-Judd	102B	Judd EV 3.5 V8	G	11	Mika Häkkinen	All
					12	Julian Bailey	1–4
						Johnny Herbert	5–8, 11, 13, 15–16
						Michael Bartels	9–10, 12, 14
Fondmetal	Fondmetal-Ford	FA1M-EFomet-1	Ford Cosworth DFR 3.5 V8	G	14	Olivier Grouillard	1–13
						Gabriele Tarquini	14–16
Leyton House Racing	Leyton House-Ilmor	CG911	Ilmor 2175A 3.5 V10	G	15	Maurício Gugelmin	All
					16	Ivan Capelli	1–14
						Karl Wendlinger	15–16
Automobiles Gonfaronnaises Sportives	AGS-Ford	JH25JH25BJH27	Ford Cosworth DFR 3.5 V8	G	17	Gabriele Tarquini	1–13
						Olivier Grouillard	14
					18	Stefan Johansson	1–2
						Fabrizio Barbazza	3–14
Camel Benetton Ford	Benetton-Ford	B190BB191	Ford HBA4 3.5 V8 Ford HBA5 3.5 V8	P	19	Roberto Moreno	1–11
						Michael Schumacher	12–16
					20	Nelson Piquet	All
Scuderia Italia	Dallara-Judd	F191	Judd GV 3.5 V10	P	21	Emanuele Pirro	All
					22	JJ Lehto	All
Minardi Team	Minardi-Ferrari	M191	Ferrari 037 3.5 V12	G	23	Pierluigi Martini	All
					24	Gianni Morbidelli	1–15
						Roberto Moreno	16
Equipe Ligier Gitanes	Ligier-Lamborghini	JS35JS35B	Lamborghini 3512 3.5 V12	G	25	Thierry Boutsen	All
					26	Érik Comas	All
Scuderia Ferrari	Ferrari	642642/2643	Ferrari 037 3.5 V12	G	27	Alain Prost	1–15
						Gianni Morbidelli	16
					28	Jean Alesi	All
Larrousse F1	Lola-Ford	LC91	Ford Cosworth DFR 3.5 V8	G	29	Éric Bernard	1–15
						Bertrand Gachot	16
					30	Aguri Suzuki	All
Coloni Racing	Coloni-Ford	C4	Ford Cosworth DFR 3.5 V8	G	31	Pedro Chaves	1–13
						Naoki Hattori	15–16
Team 7Up Jordan	Jordan-Ford	191	Ford HBA4 3.5 V8	G	32	Bertrand Gachot	1–10
						Michael Schumacher	11
						Roberto Moreno	12–13
						Alessandro Zanardi	14–16
					33	Andrea de Cesaris	All
Modena Team	Lambo-Lamborghini	291	Lamborghini 3512 3.5 V12	G	34	Nicola Larini	All
					35	Eric van de Poele	All

1991 Formula One World Championship Media

• 

  Bertrand Gachot in the Jordan during the US GP

• 

  Michael Schumacher made his debut this season with Jordan before joining Benetton.

• 

  Mika Häkkinen (pictured in 2006) made his debut with Lotus.

• 

  Senna won seven Grands Prix in 1991 en route to his third and final title.

• 

  Nigel Mansell was Senna's closest challenger, winning five races and eventually finishing second in the championship.

• 

  Riccardo Patrese proved to be a strong force in the other Williams, winning two Grands Prix.

• 

  Triple champion Alain Prost had a disappointing year with Ferrari, culminating in his dismissal before the end of the season.