| 23.3.1975 | 1000 km Mugello | 1 | #11512-008 | Merzario / Ickx | Willi Kauhsen Racing Team | 2nd |
| 23.3.1975 | 1000 km Mugello | 2 | #11512-010 | Pescarolo / Bell | Willi Kauhsen Racing Team | 4th |
| 23.3.1975 | 1000 km Mugello | T | | Pescarolo / Bell | Willi Kauhsen Racing Team | T-car |
| 6.4.1975 | 800 km Dijon | 1 | #11512-010 | Pescarolo / Bell | Willi Kauhsen Racing Team | 4th |
| 6.4.1975 | 800 km Dijon | 2 | #11512-008 | Merzario / Laffite | Willi Kauhsen Racing Team | 1st |
| 6.4.1975 | 800 km Dijon | 60T | | Merzario / Laffite / Pescarolo / Bell | Willi Kauhsen Racing Team | T-car |
| 20.4.1975 | 1000 km Monza | 1 | #11512-010 | Bell / Pescarolo | Willi Kauhsen Racing Team | 18th |
| 20.4.1975 | 1000 km Monza | 2 | #11512-008 | Merzario / Laffite | Willi Kauhsen Racing Team | 1st |
| 20.4.1975 | 1000 km Monza | T | | Henri Pescarolo | Willi Kauhsen Racing Team | T-car |
| 4.5.1975 | 1000 km Spa | 1 | #11512-008 | Ickx / Merzario | Kauhsen Team | 2nd |
| 4.5.1975 | 1000 km Spa | 2 | #11512-010 | Pescarolo / Bell | Kauhsen Team | 1st |
| 4.5.1975 | 1000 km Spa | 2T | #11512-009 | Pescarolo / Bell | Kauhsen Team | T-car |
| 18.5.1975 | Coppa Florio | 1 | #11512-008 | Merzario / Mass | Willi Kauhsen Racing Team | 1st |
| 18.5.1975 | Coppa Florio | 1T | | Arturo Merzario | Willi Kauhsen Racing Team | T-car |
| 18.5.1975 | Coppa Florio | 2 | #11512-010 | Bell / Pescarolo | Willi Kauhsen Racing Team | 2nd |
| 18.5.1975 | Coppa Florio | T | #11512-012 | Mass / Bell / Pescarolo | Willi Kauhsen Racing Team | T-car |
| 1.6.1975 | 1000 km Nürburgring | 1 | #11512-008 | Merzario / Laffite | Willi-Kauhsen-Racing-Team | 1st |
| 1.6.1975 | 1000 km Nürburgring | 2 | #11512-010 | Pescarolo / Bell | Willi-Kauhsen-Racing-Team | DNF |
| 1.6.1975 | 1000 km Nürburgring | 3 | #11512-009 | Mass / Scheckter | Willi-Kauhsen-Racing-Team | 6th |
| 1.6.1975 | 1000 km Nürburgring | 8 | #11512-012 | Derek Bell | Willi-Kauhsen-Racing-Team | T-car |
| 29.6.1975 | 1000 km Zeltweg | 1 | #11512-008 | Merzario / Brambilla | Willi Kauhsen Racing Team | 2nd |
| 29.6.1975 | 1000 km Zeltweg | 1T | #11512-012 | Merzario / Brambilla | Willi Kauhsen Racing Team | T-car |
| 29.6.1975 | 1000 km Zeltweg | 2 | #11512-010 | Bell / Pescarolo | Willi Kauhsen Racing Team | 1st |
| 12.7.1975 | 6 h Watkins Glen | 3 | #11512-008 | Merzario / Andretti | Willi Kauhsen Racing Team | 2nd |
| 12.7.1975 | 6 h Watkins Glen | 4 | #11512-010 | Pescarolo / Bell | Willi Kauhsen Racing Team | 1st |
| 12.7.1975 | 6 h Watkins Glen | 6 | #11512-011 | Bell / Merzario / Andretti / Pescarolo | Willi Kauhsen Racing Team | DNS |
| 20.7.1975 | Targa Florio | 1 | #11512-009 | Merzario / Vaccarella | Autodelta | 1st |
| 20.7.1975 | Targa Florio | 2 | #11512-007 | Casoni / Dini | Autodelta | DNF |
| 20.7.1975 | Interserie Hockenheim | 421 | #11512-006 | Jochen Mass | Kauhsen Racing Team | 1st |
| 20.7.1975 | Interserie Hockenheim | 422 | #11512-012 | Henri Pescarolo | Kauhsen Racing Team | 3rd |
| 17.8.1975 | Interserie Kassel-Calden | 50 | | Derek Bell | Willi Kauhsen-Racing-Team | 1st |
| 17.8.1975 | Interserie Kassel-Calden | | | Henri Pescarolo | Willi Kauhsen-Racing-Team | 2nd |
| 24.8.1975 | Interserie Zandvoort | 50 | | Derek Bell | Willi Kauhsen Racing Team | 4th |
| 24.8.1975 | Interserie Zandvoort | 51 | | Hartwig Bertrams | Willi Kauhsen Racing Team | 11th |
| 7.9.1975 | Interserie Nürburgring Supersprint | 21 | #11512-012 | Derek Bell | Willi Kauhsen-Racing-Team | 7th |
| 7.9.1975 | Interserie Nürburgring Supersprint | 22? | | Henri Pescarolo | Willi Kauhsen-Racing-Team | 11th |
| 7.9.1975 | Interserie Nürburgring Supersprint | 23 | | John Watson | Willi Kauhsen-Racing-Team | 6th |
| 28.9.1975 | Interserie Hockenheim | 49 | | Hans-Joachim Stuck | Willi Kauhsen Racing Team | DNA |
| 28.9.1975 | Interserie Hockenheim | 50 | #11512-012 | Derek Bell | Willi Kauhsen Racing Team | 5th |
| 28.9.1975 | Interserie Hockenheim | 51 | | Henri Pescarolo | Willi Kauhsen Racing Team | 4th |
| 28.9.1975 | Interserie Hockenheim | 72 | | Jochen Mass | Willi Kauhsen Racing Team | ?th |