| 18.5.1975 | DARM Salzburgring [T+2.0/GT] | 3 | | | | DNE |
| 18.5.1975 | DARM Salzburgring [T+2.0/GT] | 4 | | | | DNE |
| 18.5.1975 | DARM Salzburgring [T+2.0/GT] | 5 | | | | DNE |
| 18.5.1975 | DARM Salzburgring [T+2.0/GT] | 7 | | | | DNE |
| 18.5.1975 | Coppa Florio | 48 | #911 560 9121 | Bertrams / Wisell / Schickentanz | Tebernum Porsche Racing Team | 4th |
| 18.5.1975 | Coppa Florio | | | Carducci / Mirto Randazzo | | DNA |
| 18.5.1975 | DARM Salzburgring [T+2.0/GT] | | #911 460 9078 | Eberhard Sindel | Rallye Gemeinschaft Ulm | DNS |
| 19.5.1975 | NTK Zandvoort | 72 | | Heinz-Jörgen Dahmen | Porsche Kannacher Krefeld | 2nd |
| 19.5.1975 | NTK Zandvoort | 73 | | Jürgen Kannacher | Porsche Kannacher Krefeld | DNS |
| 25.5.1975 | Euro GT Zeltweg | 2 | | Toine Hezemans | Gelo Racing Team | 10th |
| 25.5.1975 | Euro GT Zeltweg | 6 | #911 560 9121 | Hartwig Bertrams | Tebernum Porsche Racing Team | 4th |
| 25.5.1975 | Euro GT Zeltweg | 7 | | Kenneth Leim | Team Bla Racing | raced |
| 25.5.1975 | Euro GT Zeltweg | 8 | | Kenneth Leim | Ecurie du Nord | DNA |
| 25.5.1975 | Euro GT Zeltweg | 10 | #911 360 1045 | Bengt Ekberg | Team Västkust Stugan | 6th |
| 25.5.1975 | Euro GT Zeltweg | 11 | #911 460 9078 | Eberhard Sindel | Rallyegemeinschaft Ulm | 7th |
| 25.5.1975 | Euro GT Zeltweg | 14 | | Volker Bruchhof | Haralnd Reimann | DNA |
| 25.5.1975 | Euro GT Zeltweg | 17 | | Vittorio Benvenuti | | raced |
| 25.5.1975 | 100 mile Hockenheim | | | Heinz-Jörgen Dahmen | Porsche Kannacher | 1st |
| 25.5.1975 | 100 mile Hockenheim | | #911 460 9068 | Eugen Kiemele | Eugen Kiemele | 2nd |
| 26.5.1975 | 100 mile Lime Rock I | 6 | | Hurley Haywood | | DNA |
| 26.5.1975 | 100 mile Lime Rock II | 6 | | Hurley Haywood | | DNA |
| 26.5.1975 | 100 mile Lime Rock I | 18 | | Bill Schmid | | 11th |
| 26.5.1975 | 100 mile Lime Rock II | 18 | | Bill Schmid | | 11th |
| 26.5.1975 | 100 mile Lime Rock I | 43 | #911 560 9112 | John O'Steen | | 6th |
| 26.5.1975 | 100 mile Lime Rock II | 43 | #911 560 9112 | John O'Steen | | 6th |
| 26.5.1975 | 100 mile Lime Rock II | 74 | #911 560 9123 | Ludwig Heimrath | | 25th |
| 26.5.1975 | 100 mile Lime Rock I | 74 | #911 560 9123 | Ludwig Heimrath | | 8th |
| 26.5.1975 | 100 mile Lime Rock II | 75 | | Norm Ridgely | | 12th |
| 26.5.1975 | 100 mile Lime Rock I | 75 | | Norm Ridgely | | 14th |
| 1.6.1975 | 100 mile Mid-Ohio | 6 | | Hurley Haywood | | 3rd |
| 1.6.1975 | 100 mile Mid-Ohio | 23 | #911 360 0727 | Charlie Kemp | Armorall Racing Team | 8th |
| 1.6.1975 | 100 mile Mid-Ohio | 43 | #911 560 9112 | John O'Steen | Ecurie Escargot | 6th |
| 1.6.1975 | 1000 km Nürburgring | 51 | | Fitzpatrick / Hezemans / Schurti | GELO-Racing-Team, Georg Loos KG | 9th |
| 1.6.1975 | 1000 km Nürburgring | 53 | #911 460 9077 | Schurti / Ludwig | GELO-Racing-Team, Georg Loos KG | DNF |
| 1.6.1975 | 1000 km Nürburgring | 55 | #911 560 9117 | Heyer / Wollek / Stenzel | Jägermeister-Kremer-Team | DNF |
| 1.6.1975 | 1000 km Nürburgring | 56 | #911 460 9073 | Schimpf / Fischhaber / Kelleners | Jägermeister-Kremer-Team | DNA |
| 1.6.1975 | 1000 km Nürburgring | 59 | #911 560 9121 | Bertrams / Schickentanz / Wisell | Tebernum-Porsche-Racing-Team | DNF |
| 1.6.1975 | 1000 km Nürburgring | 63 | #911 360 1045 | Ekberg / Larsson | Team Västkuststugan-Porsche Kubero | 12th |
| 1.6.1975 | 1000 km Nürburgring | 64 | | Lundgardh / Simonsen | Team Dinitrol Center | DNF |
| 1.6.1975 | 1000 km Nürburgring | 66 | | Konrad / Kannacher | Jürgen Konrad | DNF |
| 1.6.1975 | 1000 km Nürburgring | 67 | | Kauwertz / Drees | Neußer Motorsportclub e.V. im ADAC | DNF |
| 1.6.1975 | 1000 km Nürburgring | 68 | #911 460 9078 | Sindel / Dören | Rallye-Gemeinschaft Ulm | 16th |
| 1.6.1975 | 1000 km Nürburgring | 69 | | Stocks / Holup | AMC Duisburg | 19th |
| 1.6.1975 | 100 mile Mid-Ohio | 74 | #911 560 9123 | Ludwig Heimrath | | 7th |
| 1.6.1975 | 100 mile Mid-Ohio | 75 | | Norm Ridgely | | DNA |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 47 | #911 460 9060 | Reinhardt Stenzel | Foto Quele Max Moritz Racing Team | 4th |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 48 | | Anton Stocks | AMC Duisburg | 11th |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 50 | #911 460 9095 | Richard Leder | Richard Leder | DNF |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 51 | #911 360 0636 | Jürgen Lässig | Autohaus Max Moritz GmbH | DNA |
| 8.6.1975 | DRM Hockenheim Rhein-Pokal | 52 | #911 560 9121 | Hartwig Bertrams | Tebernum Porsche Racing Team | 5th |
| 14.6.1975 | Kinnekulle | 6 | | Jan Lundgardh | Team Dinitrol | ?th |
| 14.6.1975 | 100 mile Mosport | 6 | | Hurley Haywood | G. W. Dickinson | 1st |
| 14.6.1975 | 100 mile Mosport | 10 | | Marcel Talbot | Tamaco Industr. Ltd. | 12th |
| 14.6.1975 | 100 mile Mosport | 11 | | Hans Berner | Motex | 14th |
| 14.6.1975 | Kinnekulle | 16 | | Kenneth Leim | Team Blå Racing | ?th |
| 14.6.1975 | Kinnekulle | 17 | | Roland Larsson | Team Västkuststugan | 3rd |
| 14.6.1975 | 100 mile Mosport | 23 | #911 360 0727 | Charlie Kemp | Armorall Racing Team | 5th |
| 14.6.1975 | 100 mile Mosport | 43 | #911 560 9112 | O'Steen / Graves / Miegel | Ecurie Escargot | DNA |
| 14.6.1975 | 100 mile Mosport | 73 | #911 360 0588 R6 | Roberto Quintanilla | John McClelland | DNA |
| 14.6.1975 | 100 mile Mosport | 74 | #911 560 9123 | Ludwig Heimrath | Heimrath Racing | 3rd |
| 14.6.1975 | 100 mile Mosport | 75 | | Norm Ridgely | Ridgely Racing | 11th |
| 15.6.1975 | 24 h Le Mans | 9 | #911 460 9083 | Merello | Ecuador Marlboro Team | DNF |
| 15.6.1975 | 24 h Le Mans | 16 | #911 560 9121 | Schickentanz / Bertrams | Joest Racing | DNF |
| 15.6.1975 | 4 h Salzburgring | 25 | #911 460 9078 | Sindel / Dören | Rallye-Gemeinschaft Ulm | 2nd |
| 15.6.1975 | 24 h Le Mans | 50 | #911 360 0885 | Striebig / Kirschoffer / Mauroy | Louis Meznarie | 28th |
| 15.6.1975 | 24 h Le Mans | 51 | | | Claude Haldi | DNA |
| 15.6.1975 | 24 h Le Mans | 53 | #911 460 9059 | Borras / Moisson / Cachia | A.S.A. Cachia | 7th |
| 15.6.1975 | 24 h Le Mans | 56 | | Chenevière / Zbinden | Bernard Chenevière | DNA |
| 15.6.1975 | DRM Mainz-Finthen | 56 | #911 460 9060 | Reinhardt Stenzel | Team Foto-Quele Max Moritz-Racing | 1st |
| 15.6.1975 | 24 h Le Mans | 59 | #911 460 9077 | Schenken / Ganley | Gelo Racing Team | DNF |
| 15.6.1975 | 24 h Le Mans | 64 | | Heyer / Wisell / Kremer | Porsche Kremer | DNA |
| 15.6.1975 | 24 h Le Mans | 65 | #911 560 9117 | Sprowls / Bolanos / Contreras | Porsche Kremer | 9th |
| 15.6.1975 | 24 h Le Mans | 66 | | Aeschlimann / Cayeux | Racing Team Schulthess | DNA |
| 15.6.1975 | 24 h Le Mans | 69 | #911 460 9072 | Faure / "Beurlys" / Cooper | "Beurlys" | 6th |
| 15.6.1975 | 24 h Le Mans | 71 | #911 360 0791 | Laplacette / Pigeon / Leroux | Joël Laplacette | 25th |
| 15.6.1975 | DRM Mainz-Finthen | 85 | #911 460 9073 | Eckhard Schimpf | Jägermeister-Racing-Team | 9th |
| 15.6.1975 | DRM Mainz-Finthen | | #911 360 0636 | Jürgen Lässig | Autohaus Max Moritz GmbH | DNF |
| 15.6.1975 | DRM Mainz-Finthen | | | Franz Konrad | Scuderia Teutonia | DNF |
| 15.6.1975 | DRM Mainz-Finthen | | | Anton Stocks | AMC Duisburg | 7th |
| 15.6.1975 | DRM Mainz-Finthen | | #911 460 9062 | Günther Chrzanowski | Günter Chrzanowski | 6th |
| 15.6.1975 | DRM Mainz-Finthen | | | Harald Reimann | | DNF |
| 15.6.1975 | DRM Mainz-Finthen | | #911 460 9095 | Richard Leder | Richard Leder | 8th |
| 15.6.1975 | DRM Mainz-Finthen | | | Hans-Peter Ziegler | | DNF |
| 22.6.1975 | Avus | | | Richard Leder | Richard Leder | 3rd |
| 22.6.1975 | Avus | | | Jan Lundgardh | | 4th |
| 22.6.1975 | Avus | | #911 460 9078 | Eberhard Sindel | | 5th |
| 22.6.1975 | DARM Avus [GT+2.0/T+2.0] | | #911 360 0921 | Edgar Kaib | Edgar Kaib | ?th |
| 22.6.1975 | DARM Avus [GT+2.0/T+2.0] | | | Jan Lundgardh | | ?th |
| 22.6.1975 | DARM Avus [GT+2.0/T+2.0] | | | Richard Leder | Richard Leder | ?th |
| 29.6.1975 | Euro GT Norisring | 3 | #911 460 9077? | Tim Schenken | Gelo Racing Team Georg Loos | 3rd |
| 29.6.1975 | Euro GT Norisring | 4 | #911 560 9117 | Hans Heyer | Vaillant Kremer Team | 5th |
| 29.6.1975 | DRM Norisring | 8 | #911 560 9121 | Reine Wisell | Tebernum Porsche Racing Team | 5th |
| 29.6.1975 | Euro GT Norisring | 15 | #911 360 1045 | Bengt Ekberg | Team Västkuststugan Porsche Kubero | 8th |
| 29.6.1975 | DRM Norisring | 18 | #911 460 9068 | Eugen Kiemele | Eugen Kiemele | 8th |
| 29.6.1975 | Euro GT Norisring | 19 | #911 460 9095 | Richard Leder | Richard Leder | 7th |
| 29.6.1975 | DRM Norisring | 32 | #911 460 9060 | Reinhardt Stenzel | Foto-Quele Max Moritz Racing Team | 2nd |
| 29.6.1975 | Norisring Trophäe | 32 | #911 460 9060 | Reinhardt Stenzel | Foto-Quele Max Moritz Racing Team | 3rd |
| 29.6.1975 | DRM Norisring | 35T | | Helmut Kelleners | Vaillant Kremer Team | 3rd |
| 29.6.1975 | DRM Norisring | 39 | #911 360 0636 | Jürgen Lässig | Autohaus Max Moritz GmbH | 7th |
| 29.6.1975 | 1000 km Zeltweg | | | | | DNA |