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1991 Season
o  Season Overview
o  Points Graph
o  Drivers' Championship
o  Constructors' Championship
o  Participations Matrix
o  Race Results
o  Poles and Fastest Laps
o  Line-Up
o  Calendar

Profiles
o  Drivers
o  Teams
o  Cars
o  Engines
o  Tyres
o  Lubricants
o  Entrants
o  Designers
o  Car Numbers
o  Sponsors
o  Events
o  Circuits

History
o  Drivers' Championships
o  Constructors' Championships
o  Race Results
o  All-Time Calendar

Statistics
o  Data Search

Other
o  Acknowledgments
o  Links
www.ChicaneF1.com
1991 Italian GP
1990 Portuguese GP

1991 Portuguese GP

1991 Spanish GP
1992 Portuguese GP
 XX  Grande Premio de Portugal

Event Overview • SessionsEntry List
Qualifying Pre-QualifyingQualification
Race Starting GridClassificationFastest LapsLaps Led

Details
DateSunday 22 September 1991
Start time14:00
Event Portuguese GP
Circuit Estoril
Event FormatRace of 71 laps
ChampionshipWorld Championship
Race number#13 of 16 in 1991
#513 (of all time)
Circuit
Laps71
Circuit Perimeter4350 m
Race Distance4350 × 71 = 308.850 km
Grid Format2-2-2-2 (staggered)
Pole PositionLeft
First CornerRight
Track DirectionClockwise
Weather
WeatherSunny, Hot, Dry
Participants
Entries34
Qualifiers26
Finishers17
DebutantsGalp (Lubricant Manufacturer)
MilestonesCar 16 – 500th Race Entry (Car Number)
 Williams – 50th Win (Car Manufacturer)
Records Broken 1. Most 14th Place Finishes in a Season Lotus (4),
2. Most 14th Place Finishes in a Season Mika Häkkinen (3),
3. Most 6th Place Qualifications in a Season Ferrari (8)
Records Extended 1. Most Drivers' Championship Points Scores Ferrari (563),
2. Most Retirements Lotus (534),
3. Most Podium Finishes Ferrari (362),
4. Most Constructors' Championship Points Scores Ferrari (431),
5. Most 3rd Place Finishes Ferrari (117),
6. Most 12th Place Finishes Brabham (28),
7. Most Race Entries Lotus (1230),
8. Most Race Entries Riccardo Patrese (222),
9. Most Failures to Pre-Qualify Coloni (51),
10. Most 5th Place Qualifications Ferrari (117),
11. Most 5th Place Qualifications Alain Prost (27),
12. Most 6th Place Qualifications Ferrari (99),
13. Most 15th Place Qualifications Brabham (46),
14. Most 6th Place Qualifications in a Season Jean Alesi (7)

World Championship standings
1  Ayrton Senna 83 
2  Nigel Mansell 59 
3  Riccardo Patrese 44 
4  Gerhard Berger 31 
5  Nélson Piquet 25 up
6  Alain Prost 25 up
7  Jean Alesi 18 
8  Stefano Modena 9 
9  Andrea de Cesaris 9 
10  Roberto Moreno 8 
11  Pierluigi Martini 6 up
12  J J Lehto 4 up
13  Bertrand Gachot 4 up
14  Michael Schumacher 3 
15  Mika Häkkinen 2 up
  Satoru Nakajima 2 up
17  Aguri Suzuki 1 
  Éric Bernard 1 
  Julian Bailey 1 
  Mark Blundell 1 
  Emanuele Pirro 1 
  Ivan Capelli 1 
1  McLaren / Honda 114 
2  Williams / Renault 103 
3  Ferrari / Ferrari 43 
4  Benetton / Ford 36 
5  Jordan / Ford 13 
6  Tyrrell / Honda 11 
7  Minardi / Ferrari 6 up
8  Dallara / Judd 5 up
9  Lotus / Judd 3 
10  Lola / Ford 2 
11  Brabham / Yamaha 1 
  Leyton House / Ilmor 1 

Results
 WinnerPole PositionFastest Lap
Car NumberCar 6Car 6Car 5
EntrantCanon Williams TeamCanon Williams TeamCanon Williams Team
Driver Riccardo Patrese Riccardo Patrese Nigel Mansell
Car Williams FW14 Williams FW14 Williams FW14
EngineRenault 3.5 V10Renault 3.5 V10Renault 3.5 V10
Time1:35'42.3041'13.0011'18.179
Speed193.626 km/h214.518 km/h200.310 km/h