The 1923 Italian Grand Prix was a Grand Prix motor race held at Monza on 9 September 1923.
It was the first race to be designated as the European Grand Prix. Rules required a capacity limit of 2 liter, minimum weight of 650 kg, and 800 km distance, as in the Indy 500. Alfa Romeo suffered a fatal crash in practice and withdrew its other cars.
Only FIAT had superchargers and won 1-2 in a race of attrition. Only one of the American Miller 122 could also cover the full distance, taking several minutes more, while the best of the Benz RH came in fourth, and also last to be classified. The three Benz RH Tropfenwagen were down on power, but featured innovations like streamlined tear shape body with the Rear mid-engine, rear-wheel-drive layout that took four more decades to dominate single seater racing ever since.
Classification
| Pos | No | Driver | Car | Laps | Time/Retired |
|---|---|---|---|---|---|
| 1 | 14 | Carlo Salamano | Fiat 805-405 | 80 | 5h27m38 |
| 2 | 8 | Felice Nazzaro | Fiat 805-405 | 80 | 5h28m02 |
| 3 | 5 | Jimmy Murphy | Miller 122 | 80 | 5h32m51 |
| 4 | 1 | Ferdinando Minoia | Benz RH | 76 | |
| NC | 7 | Franz Horner | Benz RH | 71 | |
| NC | 16 | Martín de Álzaga | Miller 122 | 70 | |
| Ret | 4 | Albert Guyot | Rolland-Pilain | 60 | |
| Ret | 2 | Pietro Bordino | Fiat 805-405 | 44 | Driver exhaustion |
| Ret | 10 | Gaston Delalande | Rolland-Pilain | 30 | |
| Ret | 15 | André Lefebvre | Voisin Laboratoire | 29 | |
| Ret | 13 | Willy Walb | Benz RH | 29 | |
| Ret | 9 | Henri Rougier | Voisin Laboratoire | 28 | |
| Ret | 11 | Louis Zborowski | Miller 122 | 15 | |
| Ret | 3 | Eugenio Silvani | Voisin Laboratoire | 14 | Mechanical |
| DNS | 6 | Antonio Ascari | Alfa Romeo P1 | Withdrawn | |
| DNS | 12 | Giuseppe Campari | Alfa Romeo P1 | Withdrawn | |
| DNS | 17 | Ugo Sivocci | Alfa Romeo P1 | Fatal crash in practice |
