Autódromo Hermanos Rodríguez · 16 June 1991
Riccardo Patrese won the 1991 Mexican Grand Prix for Williams from 1st on the grid, 1.336s ahead of Nigel Mansell. Gianni Morbidelli gained the most places, from 23rd on the grid to 7th.
| Pos | Team | Points Breakdown | Pts | |
|---|---|---|---|---|
| 1 | Williams Patrese 10 + Mansell 6 | Patrese 10 + Mansell 6 | 16 | |
| 2 | McLaren Senna 4 + Berger 0 | Senna 4 + Berger 0 | 4 | |
| 3 | Jordan de Cesaris 3 + Gachot 0 | de Cesaris 3 + Gachot 0 | 3 | |
| 4 | Benetton Moreno 2 + Piquet 0 | Moreno 2 + Piquet 0 | 2 | |
| 5 | Lola Bernard 1 + Suzuki 0 | Bernard 1 + Suzuki 0 | 1 | |
| 6 | Minardi Morbidelli 0 + Martini 0 | Morbidelli 0 + Martini 0 | 0 | |
| 7 | Ligier Boutsen 0 | Boutsen 0 | 0 | |
| 8 | Team Lotus Häkkinen 0 + Herbert 0 | Häkkinen 0 + Herbert 0 | 0 | |
| 9 | Tyrrell Modena 0 + Nakajima 0 | Modena 0 + Nakajima 0 | 0 | |
| 10 | Brabham Blundell 0 + Brundle 0 | Blundell 0 + Brundle 0 | 0 | |
| 11 | Ferrari Alesi 0 + Prost 0 | Alesi 0 + Prost 0 | 0 | |
| 12 | Dallara Järvilehto 0 | Järvilehto 0 | 0 | |
| 13 | Footwork Alboreto 0 | Alboreto 0 | 0 | |
| 14 | Leyton House Capelli 0 + Gugelmin 0 | Capelli 0 + Gugelmin 0 | 0 | |
| 15 | Fondmetal Grouillard 0 | Grouillard 0 | 0 |
| Pos | Driver | Team | Race time / Gap | Laps | Stops | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Riccardo Patrese Williams | Williams | 1:29:52.205 | 67 | — | 10 | |
| 2 | Nigel Mansell Williams | Williams | +1.336s | 67 | — | 6 | |
| 3 | Ayrton Senna McLaren | McLaren | +57.356s | 67 | — | 4 | |
| 4 | Andrea de Cesaris Jordan | Jordan | +1 Lap | 66 | — | 3 | |
| 5 | Roberto Moreno Benetton | Benetton | +1 Lap | 66 | — | 2 | |
| 6 | Éric Bernard Lola | Lola | +1 Lap | 66 | — | 1 | |
| 7 | Gianni Morbidelli Minardi | Minardi | +1 Lap | 66 | — | — | |
| 8 | Thierry Boutsen Ligier | Ligier | +2 Laps | 65 | — | — | |
| 9 | Mika Häkkinen Team Lotus | Team Lotus | +2 Laps | 65 | — | — | |
| 10 | Johnny Herbert Team Lotus | Team Lotus | +2 Laps | 65 | — | — | |
| 11 | Stefano Modena Tyrrell | Tyrrell | +2 Laps | 65 | — | — | |
| 12 | Satoru Nakajima Tyrrell | Tyrrell | +3 Laps | 64 | — | — | |
| DNF | Mark Blundell Brabham | Brabham | DNF Engine | 54 | — | — | |
| DNF | Bertrand Gachot Jordan | Jordan | DNF Spun off | 51 | — | — | |
| DNF | Aguri Suzuki Lola | Lola | DNF Gearbox | 48 | — | — | |
| DNF | Nelson Piquet Benetton | Benetton | DNF Wheel bearing | 44 | — | — | |
| DNF | Jean Alesi Ferrari | Ferrari | DNF Clutch | 42 | — | — | |
| DNF | Jyrki Järvilehto Dallara | Dallara | DNF Engine | 30 | — | — | |
| DNF | Michele Alboreto Footwork | Footwork | DNF Engine | 24 | — | — | |
| DNF | Martin Brundle Brabham | Brabham | DNF Wheel | 20 | — | — | |
| DNF | Ivan Capelli Leyton House | Leyton House | DNF Engine | 19 | — | — | |
| DNF | Alain Prost Ferrari | Ferrari | DNF Alternator | 16 | — | — | |
| DNF | Maurício Gugelmin Leyton House | Leyton House | DNF Engine | 15 | — | — | |
| DNF | Olivier Grouillard Fondmetal | Fondmetal | DNF Engine | 13 | — | — | |
| DNF | Gerhard Berger McLaren | McLaren | DNF Engine | 5 | — | — | |
| DNF | Pierluigi Martini Minardi | Minardi | DNF Spun off | 4 | — | — |