# 1984 San Marino Grand Prix

The 1984 San Marino Grand Prix was a Formula One motor race held at Imola on 6 May 1984. It was the fourth race of the 1984 Formula One World Championship.

## Report
### Pre-race

A dispute between the Toleman team and tyre suppliers Pirelli lead to Ayrton Senna missing out on Friday practice running for his first Grand Prix around Imola. On Saturday his Hart 415T engine developed a misfire leading to Senna failing to qualify, the only time this would happen in the Brazilian's F1 career.

### Race

The 60-lap race was won by Alain Prost, driving a McLaren-TAG. René Arnoux finished second in a Ferrari, while Elio de Angelis was third in a Lotus-Renault, despite running out of fuel on the last lap, and Derek Warwick finished fourth unable to unlap himself in the last lap (if he managed he would have completed more laps than de Angelis, promoting him onto the podium). Stefan Bellof finished fifth but was disqualified at the end of the season, so Thierry Boutsen and Andrea de Cesaris rounded out the points finishers, despite the second one running out of fuel in the last lap.

## Classification
### Qualifying

| Pos | No | Driver | Constructor | Q1 | Q2 | Gap |
| 1 | 1 | Nelson Piquet | Brabham-BMW | 1:35.493 | 1:28.517 | |
| 2 | 7 | Alain Prost | McLaren-TAG | 1:35.687 | 1:28.628 | +0.111 |
| 3 | 6 | Keke Rosberg | Williams-Honda | 1:37.024 | 1:29.418 | +0.901 |
| 4 | 16 | Derek Warwick | Renault | 1:36.706 | 1:29.682 | +1.165 |
| 5 | 8 | Niki Lauda | McLaren-TAG | 1:38.021 | 1:30.325 | +1.808 |
| 6 | 28 | René Arnoux | Ferrari | 1:38.389 | 1:30.411 | +1.894 |
| 7 | 14 | Manfred Winkelhock | ATS-BMW | 1:47.362 | 1:30.723 | +2.206 |
| 8 | 23 | Eddie Cheever | Alfa Romeo | 1:42.731 | 1:30.843 | +2.326 |
| 9 | 2 | Teo Fabi | Brabham-BMW | 1:37.594 | 1:30.950 | +2.433 |
| 10 | 22 | Riccardo Patrese | Alfa Romeo | 1:41.363 | 1:31.163 | +2.646 |
| 11 | 11 | Elio de Angelis | Lotus-Renault | 1:38.423 | 1:31.173 | +2.656 |
| 12 | 26 | Andrea de Cesaris | Ligier-Renault | 1:36.613 | 1:31.256 | +2.739 |
| 13 | 27 | Michele Alboreto | Ferrari | 1:47.919 | 1:31.282 | +2.765 |
| 14 | 15 | Patrick Tambay | Renault | 1:36.250 | 1:31.633 | +3.146 |
| 15 | 5 | Jacques Laffite | Williams-Honda | 1:41.891 | 1:32.600 | +4.083 |
| 16 | 17 | Marc Surer | Arrows-BMW | 1:42.046 | 1:33.063 | +4.546 |
| 17 | 25 | François Hesnault | Ligier-Renault | 1:40.356 | 1:33.186 | +4.669 |
| 18 | 12 | Nigel Mansell | Lotus-Renault | 1:38.363 | 1:34.477 | +5.960 |
| 19 | 20 | Johnny Cecotto | Toleman-Hart | no time | 1:35.568 | +7.051 |
| 20 | 18 | Thierry Boutsen | Arrows-Ford | 1:40.920 | 1:36.018 | +7.501 |
| 21 | 4 | Stefan Bellof | Tyrrell-Ford | 1:39.765 | 1:36.059 | +7.542 |
| 22 | 3 | Martin Brundle | Tyrrell-Ford | 1:41.123 | 1:36.531 | +8.014 |
| 23 | 9 | Philippe Alliot | RAM-Hart | 1:43.132 | 1:36.733 | +8.216 |
| 24 | 21 | Mauro Baldi | Spirit-Hart | 1:42.249 | 1:36.916 | +8.399 |
| 25 | 10 | Jonathan Palmer | RAM-Hart | 1:53.014 | 1:37.262 | +8.745 |
| 26 | 30 | Jo Gartner | Osella-Alfa Romeo | 1:50.979 | 1:38.948 | +10.431 |
| 27 | 24 | Piercarlo Ghinzani | Osella-Alfa Romeo | 1:40.790 | 2:05.421 | +12.273 |
| 28 | 19 | Ayrton Senna | Toleman-Hart | no time | 1:41.585 | +13.068 |

### Race

| Pos | No | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| 1 | 7 | Alain Prost | McLaren-TAG | 60 | 1:36:53.679 | 2 | 9 |
| 2 | 28 | René Arnoux | Ferrari | 60 | + 13.416 | 6 | 6 |
| 3 | 11 | Elio de Angelis | Lotus-Renault | 59 | Out of Fuel | 11 | 4 |
| 4 | 16 | Derek Warwick | Renault | 59 | + 1 Lap | 4 | 3 |
| 5 | 18 | Thierry Boutsen | Arrows-Ford | 59 | + 1 Lap | 20 | 2 |
| 6 | 26 | Andrea de Cesaris | Ligier-Renault | 58 | Out of Fuel | 12 | 1 |
| 7 | 23 | Eddie Cheever | Alfa Romeo | 58 | Out of Fuel | 8 | |
| 8 | 21 | Mauro Baldi | Spirit-Hart | 58 | + 2 Laps | 24 | |
| 9 | 10 | Jonathan Palmer | RAM-Hart | 57 | + 3 Laps | 25 | |
| DSQ | 4 | Stefan Bellof | Tyrrell-Ford | 59 | Disqualified | 21 | |
| DSQ | 3 | Martin Brundle | Tyrrell-Ford | 55 | Disqualified | 22 | |
| Ret | 9 | Philippe Alliot | RAM-Hart | 53 | Turbo | 23 | |
| NC | 20 | Johnny Cecotto | Toleman-Hart | 52 | + 8 Laps | 19 | |
| Ret | 1 | Nelson Piquet | Brabham-BMW | 48 | Turbo | 1 | |
| Ret | 2 | Teo Fabi | Brabham-BMW | 48 | Turbo | 9 | |
| Ret | 30 | Jo Gartner | Osella-Alfa Romeo | 46 | Engine | 26 | |
| Ret | 17 | Marc Surer | Arrows-BMW | 40 | Turbo | 16 | |
| Ret | 14 | Manfred Winkelhock | ATS-BMW | 31 | Turbo | 7 | |
| Ret | 27 | Michele Alboreto | Ferrari | 23 | Exhaust | 13 | |
| Ret | 8 | Niki Lauda | McLaren-TAG | 15 | Engine | 5 | |
| Ret | 5 | Jacques Laffite | Williams-Honda | 11 | Engine | 15 | |
| Ret | 22 | Riccardo Patrese | Alfa Romeo | 6 | Electrical | 10 | |
| Ret | 12 | Nigel Mansell | Lotus-Renault | 2 | Spun Off | 18 | |
| Ret | 6 | Keke Rosberg | Williams-Honda | 2 | Electrical | 3 | |
| Ret | 15 | Patrick Tambay | Renault | 0 | Collision | 14 | |
| Ret | 25 | François Hesnault | Ligier-Renault | 0 | Collision | 17 | |
| DNQ | 24 | Piercarlo Ghinzani | Osella-Alfa Romeo | | | | |
| DNQ | 19 | Ayrton Senna | Toleman-Hart | | | | |
| Source: ||||||||

## Championship standings after the race

| Pos | Driver | Points |
| 1 | Alain Prost | 24 |
| 2 | Derek Warwick | 13 |
| 3 | René Arnoux | 10 |
| 4 | Elio de Angelis | 10 |
| 5 | Michele Alboreto | 9 |
| Source: |||
| Pos | Constructor | Points |
| 1 | McLaren-TAG | 33 |
| 2 | Ferrari | 19 |
| 3 | Renault | 14 |
| 4 | Lotus-Renault | 10 |
| 5 | Williams-Honda | 9 |
| Source: |||
* Note: Only the top five positions are included for both sets of standings. Points accurate at final declaration of results. Tyrrell and its drivers were subsequently disqualified and their points reallocated.