PORSCHE RACING HISTORYMario Casoni (I)
1973
4 February 1973 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 908/03 | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I)/Paul Blancpain (USA) | Reinhold Jöst (D) | DNF | 47th | 244 laps - Gearbox |
25 March 1973 - Vallelunga 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 12 | Porsche 908/03 | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Reinhold Jöst (D) | 5th | 5th | 9th | 272 laps |
15 April 1973 - Dijon 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 908/03 | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Reinhold Jöst (D) | DNF | 10th | 131 laps - Engine |
25 April 1973 - Monza 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 12 | Porsche 908/03 | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Reinhold Jöst (D) | DNF | 11th | 1 lap - Engine |
27 May 1973 - Nürburgring 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 10 | Porsche 908/03 | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Reinhold Jöst (D) | DNS | Accident in Practice |