This was the last win for a car using Pirelli tyres until the 2011 Australian Grand Prix .
Race
Pre-race
Between the Monaco and Canadian Grands Prix, Cesare Fiorio had been fired as team manager of Ferrari and had been replaced by Piero Ferrari . Meanwhile, John Barnard had left as Benetton's technical director; he was replaced by Gordon Kimball (father of future IndyCar driver Charlie Kimball ). The Circuit Gilles Villeneuve had been modified from the year before: the right-left sequence before the start-finish straight was altered to slow cars down.
On the driver front, Julian Bailey 's funding ran out and he was replaced at Lotus by Johnny Herbert , who subsequently failed to qualify for the race, while Alex Caffi was out of action for Footwork as a result of injuries sustained in a road accident. His place was taken by Stefan Johansson .
Race
At the start, Mansell got away well and led Patrese, Senna, Prost, Berger, and Moreno. Berger went out on lap 4 with electronics problems, while Aguri Suzuki retired when his Lola caught fire. Moreno was out on lap 10 when he spun off, while Prost was suffering from gearbox problems. The Frenchman had managed to hold on while he engaged in a battle with teammate Alesi and Piquet's Benetton.
Mansell led Patrese and Senna on lap 25 when Senna retired, leaving Mansell and Patrese a long way ahead of the Alesi–Prost–Piquet battle. This ended Senna's thus far perfect season, capping his winning streak at 4. Prost retired shortly after with a gearbox failure on lap 27 and Ferrari's misery was compounded on lap 34 when Alesi's engine blew up.
The Williams drivers were now well ahead of the pack, but Piquet closed on Patrese, the Italian suffering from gearbox troubles of his own. In the late stages Patrese was passed by Stefano Modena in the Tyrrell. On the last lap, Mansell led from Piquet, Modena, Patrese, de Cesaris, and Gachot when he suddenly slowed to a halt at the hairpin. There were rumours that Mansell had failed to change gear for the hairpin and stalled the car, or that he had turned off the engine accidentally while wavin...
Quick Facts
Table 1
| Pos | No | Driver | Constructor | Time | Gap |
|---|---|---|---|---|---|
| 1 | 21 | Emanuele Pirro | Dallara-Judd | 1:23.244 | — |
| 2 | 22 | JJ Lehto | Dallara-Judd | 1:23.480 | +0.236 |
| 3 | 33 | Andrea de Cesaris | Jordan-Ford | 1:23.672 | +0.428 |
| 4 | 32 | Bertrand Gachot | Jordan-Ford | 1:23.719 | +0.475 |
| 5 | 14 | Olivier Grouillard | Fondmetal-Ford | 1:24.795 | +1.551 |
| 6 | 34 | Nicola Larini | Lambo-Lamborghini | 1:25.736 | +2.492 |
| 7 | 35 | Eric van de Poele | Lambo-Lamborghini | 1:26.900 | +3.656 |
| 8 | 31 | Pedro Chaves | Coloni-Ford | 1:34.475 | +11.231 |
Table 2
| Pos | No | Driver | Constructor | Q1 | Q2 |
|---|---|---|---|---|---|
| 1 | 6 | Riccardo Patrese | Williams-Renault | 1:37.593 | 1:19.837 |
| 2 | 5 | Nigel Mansell | Williams-Renault | 1:35.065 | 1:20.225 |
| 3 | 1 | Ayrton Senna | McLaren-Honda | 1:35.843 | 1:20.318 |
| 4 | 27 | Alain Prost | Ferrari | 1:36.003 | 1:20.656 |
| 5 | 19 | Roberto Moreno | Benetton-Ford | 1:35.897 | 1:20.686 |
| 6 | 2 | Gerhard Berger | McLaren-Honda | 1:38.223 | 1:20.916 |
| 7 | 28 | Jean Alesi | Ferrari | 1:35.257 | 1:21.227 |
| 8 | 20 | Nelson Piquet | Benetton-Ford | 1:37.354 | 1:21.241 |
| 9 | 4 | Stefano Modena | Tyrrell-Honda | 1:38.218 | 1:21.298 |
| 10 | 21 | Emanuele Pirro | Dallara-Judd | 1:39.017 | 1:21.864 |
Table 3
| Pos | No | Driver | Constructor | Tyre | Laps |
|---|---|---|---|---|---|
| 1 | 20 | Nelson Piquet | Benetton-Ford | P | 69 |
| 2 | 4 | Stefano Modena | Tyrrell-Honda | P | 69 |
| 3 | 6 | Riccardo Patrese | Williams-Renault | G | 69 |
| 4 | 33 | Andrea de Cesaris | Jordan-Ford | G | 69 |
| 5 | 32 | Bertrand Gachot | Jordan-Ford | G | 69 |
| 6 | 5 | Nigel Mansell | Williams-Renault | G | 68 |
| 7 | 23 | Pierluigi Martini | Minardi-Ferrari | G | 68 |
| 8 | 26 | Érik Comas | Ligier-Lamborghini | G | 68 |
| 9 | 21 | Emanuele Pirro | Dallara-Judd | P | 68 |
| 10 | 3 | Satoru Nakajima | Tyrrell-Honda | P | 67 |