Race Result
| GP n. 480 - 10/09/1989 - Grand Prix of Italy Autodromo Nationale di Monza |
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| Winner: | Alain Prost / McLaren-Honda - 1:19'27.550 | ||||||
| Pole Position: | Ayrton Senna / McLaren- Honda - 1:23.720 | ||||||
| Fastest Lap: | Alain Prost / McLaren-Honda - 1:28.107 | ||||||
| Pos | Nš | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| 1 | 2 |  Alain Prost |
McLaren-Honda | 53 | 1:19'27.550 | 4 | 9 |
| 2 | 28 |  Gerhard Berger |
Ferrari | 53 | +7.326 | 2 | 6 |
| 3 | 5 |  Thierry Boutsen |
Williams-Renault | 53 | +14.975 | 6 | 4 |
| 4 | 6 |  Riccardo Patrese |
Williams-Renault | 53 | +38.722 | 5 | 3 |
| 5 | 4 | Jean Alesi |
Tyrrell-Ford | 52 | + 1 lap | 10 | 2 |
| 6 | 7 |  Martin Brundle |
Brabham-Judd | 52 | + 1 lap | 12 | 1 |
| 7 | 23 | Pierluigi Martini |
Minardi-Ford | 52 | + 1 lap | 15 | 0 |
| 8 | 24 |  Luis Perez-Sala |
Minardi-Ford | 51 | + 2 laps | 26 | 0 |
| 9 | 25 | Rene Arnoux |
Ligier-Ford | 51 | + 2 laps | 23 | 0 |
| 10 | 12 |  Satoru Nakajima |
Lotus-Judd | 51 | suspension | 19 | 0 |
| 11 | 21 | Alex Caffi |
Dallara-Ford | 47 | engine | 20 | 0 |
| Ret | 22 | Andrea de Cesaris |
Dallara-Ford | 45 | engine | 17 | 0 |
| Ret | 1 |  Ayrton Senna |
McLaren-Honda | 44 | engine | 1 | 0 |
| Ret | 27 | Nigel Mansell |
Ferrari | 41 | gear box | 3 | 0 |
| Ret | 37 | Bertrand Gachot |
Onyx-Ford | 38 | radiator | 22 | 0 |
| Ret | 19 | Alessandro Nannini |
Benetton-Ford | 33 | brakes | 8 | 0 |
| Ret | 26 | Olivier Grouillard |
Ligier-Ford | 30 | exhaust | 21 | 0 |
| Ret | 16 | Ivan Capelli |
March-Judd | 30 | engine | 18 | 0 |
| Ret | 11 | Nelson Piquet |
Lotus-Judd | 23 | spun off | 11 | 0 |
| Ret | 9 | Derek Warwick |
Arrows-Ford | 18 | fuel system | 16 | 0 |
| Ret | 3 | Jonathan Palmer |
Tyrrell-Ford | 18 | engine | 14 | 0 |
| Ret | 17 | Nicola Larini |
Osella-Ford | 16 | gear box | 24 | 0 |
| Ret | 29 | Michele Alboreto |
Lola-Lamborghini | 14 | electrical | 13 | 0 |
| Ret | 15 | Mauricio Gugelmin |
March-Judd | 14 | throttle | 25 | 0 |
| Ret | 30 | Philippe Alliot |
Lola-Lamborghini | 1 | spun off | 7 | 0 |
| Ret | 20 | Emanuele Pirro |
Benetton-Ford | 0 | transmission | 9 | 0 |
| Dnq | 40 | Gabriele Tarquini |
AGS-Ford | did not qualify | 0 | ||
| Dnq | 41 | Yannick Dalmas |
AGS-Ford | did not qualify | 0 | ||
| Dnq | 10 |  Eddie Cheever |
Arrows-Ford | did not qualify | 0 | ||
| Dnq | 8 | Stefano Modena |
Brabham-Judd | did not qualify | 0 | ||
| Dnq | 31 | Roberto Moreno |
Coloni-Ford | did not qualify | 0 | ||
| Dnq | 32 | Enrico Bertaggia |
Coloni-Ford | did not qualify | 0 | ||
| Dnq | 33 |  Oscar Larrauri |
Euro Brun-Judd | did not qualify | 0 | ||
| Dnq | 36 |  Stefan Johansson |
Onyx-Ford | did not qualify | 0 | ||
| Dnq | 18 | Piercarlo Ghinzani |
Osella-Ford | did not qualify | 0 | ||
| Dnq | 38 |  Christian Danner |
Rial-Ford | did not qualify | 0 | ||
| Dnq | 39 | Pierre Henri Raphanel |
Rial-Ford | did not qualify | 0 | ||
| Dnq | 34 | Bernd Schneider |
Zakspeed-Yamaha | did not qualify | 0 | ||
| Dnq | 35 | Aguri Suzuki |
Zakspeed-Yamaha | did not qualify | 0 | ||