PORSCHE RACING HISTORYMario Casoni (I)
1975 : Mugello 1000 Km - 3rd in class : Dijon 800 Km - 2nd overall : Monza 1000 Km - 2nd overall : Spa 1000 Km - 3rd in class : Coppa Florio - 3rd overall : Zeltweg 1000 km - 3rd overall : Monza 6 Hours - 3rd overall
23 March 1975 - Mugello 1000 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 11 | Porsche 908/03 | 908/03-012 | S3.0 | Jürgen Barth (D)/Ernst Kraus (D)/Mario Casoni (I) | Scuderia Nettuno (D) | 8th | 6th | 16th | 139 laps |
23 March 1975 - Mugello 1000 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 45 | Porsche 911 Carrera RSR | 911 460 9077 | GT | Mario Casoni (I)/Toine Hezemans (NL)/Manfred Schurti (FL) | Gelo Racing Team (D) | 11th | 3rd | 21st | 133 laps |
23 March 1975 - Mugello 1000 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 908/03 Turbo | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Scuderia Nettuno Ovoro (D) | DNF | 5th | 38 laps - Turbocharger |
6 April 1975 - Dijon 800 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 10 | Porsche 908/03 Turbo | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Joest Racing (D) | 2nd | 2nd | 5th | 238 laps |
20 April 1975 - Monza 1000 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 908/03 Turbo | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Scuderia Nettuno Ovoro (D) | 2nd | 2nd | 8th | 171 laps |
4 May 1975 - Spa 1000 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 908/03 | 908/03-012 | S3.0 | Jürgen Barth (D)/Mario Casoni (I)/Reinhold Jöst (D) | Porsche A.G. (D) | 7th | 3rd | 11th | 48 laps |
4 May 1975 - Spa 1000 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 908/03 Turbo | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Porsche A.G. (D) | DNF | 4th | 3 laps - Valves |
18 May 1975 - Coppa Florio - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 4 | Porsche 908/03 Turbo | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Scuderia Nettuno Ovoro (D) | 3rd | 3rd | 3rd | 184 laps |
1 June 1975 - Nürburgring 1000 Km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 908/03 Turbo | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Joest-Racing (D) | DNF | 2 laps - Turbocharger |
15 June 1975 - Le Mans 24 Hours - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 15 | Porsche 908/03 | 908/03-012 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I)/Jürgen Barth (D) | Joest Racing (D) | 4th | 4th | 4th | 325 laps |
29 June 1975 - Zeltweg 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 908/03 Turbo | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Scuderia Nettuno Ovoro (D) | 3rd | 3rd | 4th | 102 laps |
28 September 1975 - Monza 6 Hours - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 16 | Porsche 911 Carrera RSR | GT3.0 | Toine Hezemans (NL)/Mario Casoni (I)/Manfred Schurti (FL)/John Fitzpatrick (GB) | Gelo Racing Team (D) | 3rd | 3rd | 2nd | 191 laps |