| 31.3.1975 | NTK Zandvoort | 48 | 1300 GTA Junior | Rob Redeker | | ?th |
| 6.4.1975 | 800 km Dijon | 1 | T33/TT/12 | Pescarolo / Bell | Willi Kauhsen Racing Team | 4th |
| 6.4.1975 | Aspern [T/GT] | 2 | 1300 GTA Junior | Hans Fink | Bosch Racing Team Vienna | raced |
| 6.4.1975 | 800 km Dijon | 2 | T33/TT/12 | Merzario / Laffite | Willi Kauhsen Racing Team | 1st |
| 6.4.1975 | Aspern [T/GT] | 3 | 1300 GTA Junior | Walter Kritzinger | Alfa Romeo Club Salzburg | raced |
| 6.4.1975 | Aspern [T/GT] | 4 | | Karl Vilsecker | Elan Racing Team | DNA |
| 6.4.1975 | Aspern [T/GT] | 25 | 2000 GTAm | Hans Wessely | MSC Rutzenmoos | DNA |
| 6.4.1975 | Aspern [T/GT] | 26 | | Michael Lenhart | Bosch Racing Team Vienna | raced |
| 6.4.1975 | 800 km Dijon | 60T | T33/TT/12 | Merzario / Laffite / Pescarolo / Bell | Willi Kauhsen Racing Team | T-car |
| 13.4.1975 | Euro GT Imola | 71 | Giulia Sprint GTA | Walter Gabani | | DNQ |
| 13.4.1975 | Euro GT Imola | 74 | Giulia Sprint GTA | Piero Caronni | | DNQ |
| 13.4.1975 | Euro GT Imola | 78 | Giulia Sprint GTA | Camilio Citterio | | 15th |
| 13.4.1975 | Euro GT Imola | 79 | Giulia Sprint GTA | Maurizio Gellini | | DNQ |
| 13.4.1975 | Euro GT Imola | 81 | Giulia Sprint GTA | Angelo Chiapparini | | DNQ |
| 13.4.1975 | Euro GT Imola | 82 | Giulia Sprint GTA | Giulio Rossi | | DNQ |
| 13.4.1975 | Euro GT Imola | 85 | Giulia Sprint GTA | Franco Zorzan | | DNQ |
| 13.4.1975 | DARM Hockenheim [GT2.0/T2.0] | 271 | GTV | Jürgen Boer | Jürgen Boer | DNA |
| 13.4.1975 | DARM Hockenheim [GT2.0/T2.0] | 272 | GTV | Fitz Gass | Fitz Gass | DNA |
| 13.4.1975 | DARM Hockenheim [GT2.0/T2.0] | 280 | GTA | Hans Stahlberg | Touren-Sportwagen H. H. Stahlberg | DNA |
| 13.4.1975 | Casale [GT] | | GTA | Carrara | | 3rd |
| 20.4.1975 | 1000 km Monza | 1 | T33/TT/12 | Bell / Pescarolo | Willi Kauhsen Racing Team | 18th |
| 20.4.1975 | 1000 km Monza | 2 | T33/TT/12 | Merzario / Laffite | Willi Kauhsen Racing Team | 1st |
| 20.4.1975 | NTK Zandvoort | 48 | 1300 GTA Junior | Rob Redeker | | 5th |
| 20.4.1975 | 1000 km Monza | T | T33/TT/12 | Henri Pescarolo | Willi Kauhsen Racing Team | T-car |
| 21.4.1975 | Tatoi | 7 | T33/TT/3 | P. Moshous | priv. | 1st |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 18 | Montreal | Dieter Meyer | Touren und Sportwagen Hans H. Stahlberg | DNA |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 49 | 2000 GTAm | Michael Bischoff | Touren und Sportwagen Hans-H. Stahlberg | DNF |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 68 | Alfetta GT | Heinz Isert | Heinz Isert | DNA |
| 27.4.1975 | DRM Nürburgring Eifelrennen | 92 | 2000 GTV | Rudolf Strobl | | DNA |
| 4.5.1975 | 1000 km Spa | 1 | T33/TT/12 | Ickx / Merzario | Kauhsen Team | 2nd |
| 4.5.1975 | 1000 km Spa | 2 | T33/TT/12 | Pescarolo / Bell | Kauhsen Team | 1st |
| 4.5.1975 | 1000 km Spa | 2T | T33/TT/12 | Pescarolo / Bell | Kauhsen Team | T-car |
| 10.5.1975 | 6 h Riverside | 36 | 2000 GTV | Samson / Kohl | Samero | 26th |
| 10.5.1975 | 6 h Riverside | 78 | GTV | Newman / Cannone | GTA Sports Cars | 27th |
| 18.5.1975 | Coppa Florio | 1 | T33/TT/12 | Merzario / Mass | Willi Kauhsen Racing Team | 1st |
| 18.5.1975 | Coppa Florio | 1T | T33/TT/12 CP | Arturo Merzario | Willi Kauhsen Racing Team | T-car |
| 18.5.1975 | Coppa Florio | 2 | T33/TT/12 | Bell / Pescarolo | Willi Kauhsen Racing Team | 2nd |
| 18.5.1975 | GP Brno | 33 | 1300 GTA Junior | Latari / Frank | | DNF |
| 18.5.1975 | GP Brno | 45 | 1300 GTA Junior | Tvrdý / Rajnoha | | DNF |
| 18.5.1975 | GP Brno | 53 | 1300 GTA Junior | Bischoff / Meyer | Touren- und Sportwagen Hans H. Stahlberg, Hamburg | DNF |
| 18.5.1975 | Coppa Florio | T | T33/TT/12 | Mass / Bell / Pescarolo | Willi Kauhsen Racing Team | T-car |
| 19.5.1975 | NTK Zandvoort | 48 | 1300 GTA Junior | Rob Redeker | | ?th |
| 19.5.1975 | NTK Zandvoort | 60 | Giulia Sprint GTV | Carel Stapff | | DNS |
| 19.5.1975 | NTK Zandvoort | 71 | Giulia Sprint GTV | Raijmond van Hove | | ?th |
| 19.5.1975 | NTK Zandvoort | 80 | Giulia Super | Jan Zoon | | ?th |
| 25.5.1975 | Euro GT Zeltweg | 20 | Giulia Sprint GTA | | Armin Vogt | DNQ |
| 1.6.1975 | 1000 km Nürburgring | 1 | T33/TT/12 | Merzario / Laffite | Willi-Kauhsen-Racing-Team | 1st |
| 1.6.1975 | 1000 km Nürburgring | 2 | T33/TT/12 | Pescarolo / Bell | Willi-Kauhsen-Racing-Team | DNF |
| 1.6.1975 | 1000 km Nürburgring | 3 | T33/TT/12 | Mass / Scheckter | Willi-Kauhsen-Racing-Team | 6th |
| 1.6.1975 | 1000 km Nürburgring | 8 | T33/TT/12 | Derek Bell | Willi-Kauhsen-Racing-Team | T-car |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 86 | Alfetta GT | Heinz Isert | Heinz Isert | DNA |
| 8.6.1975 | Ronde Cévenole | | 2000 GTV | Grobot | | 22nd |
| 8.6.1975 | Ronde Cévenole | | 2000 GTV | Béguin | | 10th |
| 14.6.1975 | Kinnekulle | 28 | Giulia Sprint GTA | Sievert Lindblad | S O Lindblads Bil | DNA |
| 14.6.1975 | 100 mile Mosport | 33 | 2000 GTAm | Frank Marino | Alfred S. Cosentino | 23rd |
| 15.6.1975 | 4 h Salzburgring | 19 | 2000 GTV | Kramer / Tauchner | | 6th |
| 22.6.1975 | NTK Zandvoort | 48 | 1300 GTA Junior | Rob Redeker | | ?th |
| 22.6.1975 | NTK Zandvoort | 76 | 2000 GTV | Bart Rosman | | ?th |
| 22.6.1975 | Estoril | | 2000 GTAm | Xavier Moreira | | 6th |
| 22.6.1975 | Avus | | 1300 GTA Junior | Volkert Merl | Mebro-Racing | 12th |
| 29.6.1975 | 1000 km Zeltweg | 1 | T33/TT/12 | Merzario / Brambilla | Willi Kauhsen Racing Team | 2nd |
| 29.6.1975 | 1000 km Zeltweg | 1T | T33/TT/12 | Merzario / Brambilla | Willi Kauhsen Racing Team | T-car |
| 29.6.1975 | 1000 km Zeltweg | 2 | T33/TT/12 | Bell / Pescarolo | Willi Kauhsen Racing Team | 1st |
| 29.6.1975 | DRM Norisring | 77 | Alfetta GT | Heinz Isert | Heinz Isert | DNA |
| 29.6.1975 | Düren/Nordheim Zolder | | GTA | Nello Brunetti | | ?th |
| 12.7.1975 | 6 h Watkins Glen | 3 | T33/TT/12 | Merzario / Andretti | Willi Kauhsen Racing Team | 2nd |
| 12.7.1975 | 6 h Watkins Glen | 4 | T33/TT/12 | Pescarolo / Bell | Willi Kauhsen Racing Team | 1st |
| 12.7.1975 | 6 h Watkins Glen | 6 | T33/TT/12 | Bell / Merzario / Andretti / Pescarolo | Willi Kauhsen Racing Team | DNS |
| 12.7.1975 | 6 h Watkins Glen | 11 | Alfetta GT | Everett | Bobcor Performance | 26th |
| 12.7.1975 | 6 h Watkins Glen | 83 | 2000 GTAm | Marino / Everett | Frank Marino | DNA |
| 13.7.1975 | GP Nürburgring | 38 | 2000 GTV | Pasman / Kreutzner | Hans Pasman | DNA |
| 13.7.1975 | GP Nürburgring | 42 | 2000 GTV | Deußel / Brückmann / Otto | RG MSC Langenfeld | ?th |
| 13.7.1975 | GP Nürburgring | 44 | 2000 GTV | Mayr / Strobl | RG MSC Langenfeld | DNA |
| 13.7.1975 | GP Nürburgring | 77 | 1300 GTA Junior | Gillessen / Berger | East Belgian Racing Team | 9th |
| 13.7.1975 | GP Nürburgring | 79 | 1300 GTA Junior | Redeker / van Zwam | | DNF |
| 13.7.1975 | GP Nürburgring | | 1300 GTA Junior | Welter / Niederdränk | | ?th |
| 13.7.1975 | GP Nürburgring | | 1300 GTA Junior | Bischoff / Meyer | Touren- und Sportwagen H. Stahlberg | ?th |
| 13.7.1975 | GP Nürburgring | | 1300 GTA Junior | Struck / Uhrmacher / Frensch | MSC Sinzig-Westum | ?th |
| 20.7.1975 | Targa Florio | 1 | T33/TT/12 | Merzario / Vaccarella | Autodelta | 1st |
| 20.7.1975 | Targa Florio | 2 | T33/TT/12 CP | Casoni / Dini | Autodelta | DNF |
| 20.7.1975 | Targa Florio | 77 | Giulia Sprint GTA | Balocca / Premoli | | DNF |
| 20.7.1975 | Targa Florio | 78 | Giulia Sprint GTA | Bellomare / Centonze | | DNF |
| 20.7.1975 | Targa Florio | 92 | Giulia Sprint GTA | Russo / "Godolphin" | | DNF |
| 20.7.1975 | Targa Florio | 109 | 2000 GTV | Pucci / Vigneri | | 19th |
| 20.7.1975 | Targa Florio | 113 | 2000 GTV | Piciurro / "Ayala" | | DNF |
| 20.7.1975 | Targa Florio | 114 | 2000 GTV | Cambiaghi / Pittoni | | 15th |
| 20.7.1975 | Targa Florio | 115 | 2000 GTV | Donato / Donato | | 14th |
| 20.7.1975 | Targa Florio | 116 | 2000 GTV | Sapienza / Di Maria | | DNS |
| 20.7.1975 | Targa Florio | 118 | 2000 GTV | Barone / de Gregorio | | 29th |
| 20.7.1975 | Targa Florio | 119 | 2000 GTV | Di Peri / Montalvo | | DNF |
| 20.7.1975 | Targa Florio | 121 | 2000 GTV | Cioffi / Poloni | | DNF |
| 20.7.1975 | Targa Florio | 123 | 2000 GTV | Costa / La Porta | | 27th |
| 20.7.1975 | Targa Florio | 128 | Giulia Sprint GTA | | | DNS |
| 20.7.1975 | Targa Florio | 134 | 2000 GTV | Giorlando / Montalto | | 34th |
| 20.7.1975 | Interserie Hockenheim | 421 | T33/TT/12 | Jochen Mass | Kauhsen Racing Team | 1st |
| 20.7.1975 | Interserie Hockenheim | 422 | T33/TT/12 | Henri Pescarolo | Kauhsen Racing Team | 3rd |
| 20.7.1975 | Targa Florio | | GTA | Coco / Litrico | | DNS |
| 27.7.1975 | 24 h Spa | 36 | 2000 GTV | Imbert / "Steve" / Lanvin | Roland Imbert | DNF |
| 27.7.1975 | 24 h Spa | 38 | 2000 GTV | Cuici / Sougné / de Gheldere | P. Sougné | 14th |
| 27.7.1975 | 24 h Spa | 67 | Giulia Sprint GTV | Boschi / Gaufriez | Arc-en-Ciel Woluwé | 13th |