| 22.2.1975 | Stuttgart Preis Hockenheim | | | Uwe Machel | Uwe Machel | ?th |
| 22.2.1975 | Stuttgart Preis Hockenheim | | #911 460 9047 | Georges Bosshard | | ?th |
| 22.2.1975 | Stuttgart Preis Hockenheim | | #911 460 9108 | Leo Eigner | Sports Car Club of Stuttgart | ?th |
| 22.2.1975 | Stuttgart Preis Hockenheim | | | Marc Surer | Schwarzwälder Möbelversand | ?th |
| 22.2.1975 | Stuttgart Preis Hockenheim | | #911 460 9089 | Rolf Blind | Sports Car Club of Stuttgart | ?th |
| 22.2.1975 | Stuttgart Preis Hockenheim | | #911 460 9068 | Eugen Kiemele | Eugen Kiemele | ?th |
| 22.2.1975 | Stuttgart Preis Hockenheim | | | Helmut Bez | Helmut Bez | ?th |
| 9.3.1975 | 6 h Dakar | 2 | | Touroul / Calmel | Touroule | 1st |
| 16.3.1975 | National Montlhéry [Gr.4/Gr.5/Gr.7] | 1 | | Jean-Louis Chateau | | 2nd |
| 16.3.1975 | National Montlhéry [Gr.4/Gr.5/Gr.7] | 3 | | Jacques Borras | | 1st |
| 16.3.1975 | National Montlhéry [Gr.4/Gr.5/Gr.7] | 5 | | Hubert Striebig | | 4th |
| 21.3.1975 | 12 h Sebring | 1 | #911 460 9049 | Keyser / Sprowls / Contreras | Toad Hall Racing | 13th |
| 21.3.1975 | 12 h Sebring | 4 | #911 460 0037 | Dickinson / Webbe / Theodoracopulos | George Dickinson | 5th |
| 21.3.1975 | 12 h Sebring | 5 | #911 360 0601 | Harmon / Woodner | Bob Harmon | 7th |
| 21.3.1975 | 12 h Sebring | 8 | #911 460 0035 | Beasley / Jennings | Bob Beasley | 32nd |
| 21.3.1975 | 12 h Sebring | 14 | #005 0009 | Holbert / Forbes-Robinson | Holbert's Porsche-Audi | 12th |
| 21.3.1975 | 12 h Sebring | 23 | #911 360 0727 | Kemp / Baird | Armorall Racing Team | 25th |
| 21.3.1975 | 12 h Sebring | 30 | #911 460 9048 | Dyer / Bienvenue | George Dyer | 2nd |
| 21.3.1975 | 12 h Sebring | 33 | #911 460 9113 | Quintanilla / Loring | Roberto Quintanilla | 46th |
| 21.3.1975 | 12 h Sebring | 43 | #911 560 9112 | Graves / O'Steen / Helmick | Ecurie Escargot | 3rd |
| 21.3.1975 | 12 h Sebring | 54 | #911 460 0100 | Tunstall / Jenkins | Southpoint Porsche | 41st |
| 21.3.1975 | 12 h Sebring | 59 | #911 460 9054 | Gregg / Haywood | Brumos Porsche-Audi | 53rd |
| 21.3.1975 | 12 h Sebring | 67 | #911 360 0701 | McClain / White | David McClain | 17th |
| 21.3.1975 | 12 h Sebring | 68 | #911 360 0614 | Febles / Cruz | Diego Febles Racing | 8th |
| 21.3.1975 | 12 h Sebring | 74 | #911 560 9123 | Ridgely / Heimrath | Ludwig Heimrath | 68th |
| 21.3.1975 | 12 h Sebring | 79 | | Callas / Cook / Gang | Michael Callas | 14th |
| 21.3.1975 | 12 h Sebring | 91 | #911 360 0610 | Bolanos / Jourdain / Bolanos | Bolanos Racing | 4th |
| 21.3.1975 | 12 h Sebring | 92 | #911 360 0386 | Tillson / Oest | Oest-Tillson Racing | 16th |
| 21.3.1975 | 12 h Sebring | 95 | #911 360 0865 | Tabe / Marron / Martinez | Sergio Tabe | 55th |
| 23.3.1975 | 1000 km Mugello | 43 | | Berruto / Ilotte | Scuderia Brescia Corse | DNA |
| 23.3.1975 | 1000 km Mugello | 44 | #911 460 9040 | Schurti / Hezemans / Fitzpatrick | Gelo Racing Team | 9th |
| 23.3.1975 | 1000 km Mugello | 45 | #911 460 9077 | Fitzpatrick / Hezemans / Schurti | Gelo Racing Team | 11th |
| 23.3.1975 | 1000 km Mugello | 46 | #911 460 9074 | Schön / Borri / Pelit | Jolly Club | DNF |
| 23.3.1975 | 1000 km Mugello | 51 | #911 560 9121 | Bertrams / Schickentanz / Wisell | Tebernum Porsche Racing | 12th |
| 23.3.1975 | 1000 km Mugello | 52 | #911 460 9067 | Schickentanz / Bertrams / Wisell | Tebernum Porsche Racing | 10th |
| 23.3.1975 | 1000 km Mugello | 53 | | Vittorio Benvenuti | Vittorio Benvenuti | DNA |
| 23.3.1975 | 1000 km Mugello | 54 | #911 460 9052 | Haldi / Béring | Porsche Club Romand | DNF |
| 23.3.1975 | 1000 km Mugello | 56 | #911 460 9033 | Vanoli / Pallavicini | Marco Vanoli | DNA |
| 23.3.1975 | 1000 km Mugello | 57 | #004 0010 | Bonomelli / Rulon-Miller | Ennio Bonomelli | DNA |
| 23.3.1975 | DARM Zolder [GT] | 346 | #911 230 0818 | Hans Forster | Hans Forster | DNA |
| 23.3.1975 | DARM Zolder [GT] | 347 | | Hans Habermann | Hans Habermann | DNA |
| 23.3.1975 | DARM Zolder [GT] | 348 | #004 0005 | Hans Halfmann | Rallye-Club Rheinhausen | 7th |
| 23.3.1975 | DARM Zolder [GT] | 349 | | Gerhard Holup | Gerhard Holup | 6th |
| 23.3.1975 | DARM Zolder [GT] | 350 | | Norbert van Huffel | Racing Team BIAAL | DNA |
| 23.3.1975 | DARM Zolder [GT] | 351 | | Jürgen Kannacher | Porsche Krefeld | 3rd |
| 23.3.1975 | DARM Zolder [GT] | 352 | #911 460 9068 | Eugen Kiemele | Eugen Kiemele | 2nd |
| 23.3.1975 | DARM Zolder [GT] | 353 | | Franz Konrad | Scuderia Tenutonia e. V. | 4th |
| 23.3.1975 | DARM Zolder [GT] | 354 | | Herbert Kummle | Schwarzwälder Möbelversand | 10th |
| 23.3.1975 | DARM Zolder [GT] | 355 | | Richard Leder | Firestone International | 5th |
| 23.3.1975 | DARM Zolder [GT] | 357 | #911 460 9078 | Eberhard Sindel | Rallyegemeinschaft Ulm | 1st |
| 23.3.1975 | DARM Zolder [GT] | 358 | #911 460 9023 | Dieter Schornstein | Dieter Schornstein | DNA |
| 23.3.1975 | DARM Zolder [GT] | 359 | | Ralf-Dieter Schreiber | Ralf-Dieter Schreiber | 9th |
| 30.3.1975 | Nürburgring [GT/T] | 1 | #911 460 9077? | Tim Schenken | GELO-Racing-Team | 2nd |
| 30.3.1975 | Nürburgring [GT/T] | 5 | #911 460 9033 | Herbert Müller | Herbert Müller Racing | 11th |
| 30.3.1975 | Nürburgring [GT/T] | 19 | #911 360 0636 | Jürgen Lässig | Autohaus Max Moritz GmbH | 7th |
| 30.3.1975 | Nürburgring [GT/T] | | #911 460 9095 | Richard Leder | Richard Leder | 10th |
| 30.3.1975 | Nürburgring [GT/T] | | | John Fitzpatrick | GELO-Racing-Team | 14th |
| 30.3.1975 | Nürburgring [GT/T] | | | Gerhard Holup | Gerhard Holup | 13th |
| 30.3.1975 | Nürburgring [GT/T] | | #911 460 9067 | Clemens Schickentanz | Tebernum-Porsche-Racing-Team | 5th |
| 30.3.1975 | Nürburgring [GT/T] | | #911 560 9121 | Hartwig Bertrams | Tebernum-Porsche-Racing-Team | 6th |
| 30.3.1975 | Nürburgring [GT/T] | | #911 460 9078 | Eberhard Sindel | Rallyegemeinschaft Ulm | 9th |
| 30.3.1975 | Nürburgring [GT/T] | | | Toine Hezemans | GELO-Racing-Team | 4th |
| 30.3.1975 | Nürburgring [GT/T] | | | Josef Brambring | Josef Brambring | 8th |
| 30.3.1975 | Nürburgring [GT/T] | | #005 0005 | Helmut Kelleners | Jägermeister-Kremer-Team | 3rd |
| 31.3.1975 | Nürburgring Goodyear Pokal | 1 | #911 460 9077? | Tim Schenken | GELO-Racing-Team | 2nd |
| 31.3.1975 | Nürburgring Goodyear Pokal | 5 | #911 460 9033 | Herbert Müller | Herbert Müller Racing | 14th |
| 31.3.1975 | Nürburgring Goodyear Pokal | 19 | #911 360 0636 | Jürgen Lässig | Autohaus Max Moritz GmbH | 11th |
| 31.3.1975 | NTK Zandvoort | 64 | #005 0004 | Cees Siewertsen | Wallys Jeans | 1st |
| 31.3.1975 | Nürburgring Goodyear Pokal | | #911 560 9121 | Hartwig Bertrams | Tebernum-Porsche-Racing-Team | 13th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | #911 460 9095 | Richard Leder | Richard Leder | 10th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | | Josef Brambring | Kremer | 8th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | | Toine Hezemans | GELO-Racing-Team | 4th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | #005 0005 | Helmut Kelleners | Jägermeister-Kremer-Team | 6th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | #911 460 9067 | Clemens Schickentanz | Tebernum-Porsche-Racing-Team | 3rd |
| 31.3.1975 | Nürburgring Goodyear Pokal | | #911 460 9078 | Eberhard Sindel | Rallyegemeinschaft Ulm | 7th |
| 31.3.1975 | Nürburgring Goodyear Pokal | | | John Fitzpatrick | GELO-Racing-Team | 5th |
| 6.4.1975 | 800 km Dijon | 8 | #911 560 9121 | Schickentanz / Bertrams / Wisell | Tebernum Porsche Racing | 7th |
| 6.4.1975 | 800 km Dijon | 25 | | Godard / Rulon-Miller | Gante Racing | 11th |
| 6.4.1975 | 800 km Dijon | 26 | #911 460 9051 | Ballot-Léna / Wollek | Robert Buchet | 8th |
| 6.4.1975 | 800 km Dijon | 27 | #911 460 9059 | Borras / Moisson | Henri Cachia | DNQ |
| 6.4.1975 | 800 km Dijon | 28 | #911 460 9058 | Vollery / Dorchy | William Vollery | DNQ |
| 6.4.1975 | 800 km Dijon | 29 | #911 460 9052 | Haldi / Béring / Dorchy | Porsche Club Romand | DNF |
| 6.4.1975 | 800 km Dijon | 30 | | Chateau / Cayeux | Jean-Louis Chateau | DNQ |
| 6.4.1975 | Aspern [T/GT] | 32 | | Willy Rabl | Baustoff Racing Team | raced |
| 6.4.1975 | 800 km Dijon | 33 | #911 460 9040 | Fitzpatrick / Hezemans | Gelo Racing Team | 5th |
| 13.4.1975 | Euro GT Imola | 27 | #911 460 9110 | Girolamo Capra | | 8th |
| 13.4.1975 | Euro GT Imola | 31 | | Raymond Touroul | | 11th |
| 13.4.1975 | Euro GT Imola | 35 | | Vittorio Benvenuti | | raced |
| 13.4.1975 | Euro GT Imola | 38 | | Franco Berruto | | raced |
| 13.4.1975 | Euro GT Imola | 39 | | "Tambauto" | | 16th |
| 13.4.1975 | Euro GT Imola | 40 | | Gilberto Vannini | | DNQ |
| 13.4.1975 | Euro GT Imola | 44 | #911 460 9074 | Giorgio Schön | | raced |
| 13.4.1975 | Euro GT Imola | 45 | #911 460 9051 | Claude Ballot-Léna | Ecurie Robert Buchet | 2nd |
| 13.4.1975 | Euro GT Imola | 46 | | Cyril Grandet | | raced |
| 13.4.1975 | Euro GT Imola | 48 | | John Fitzpatrick | Gelo Racing Team Georg Loos | DQ |
| 13.4.1975 | Euro GT Imola | 51 | #911 460 9067 | Clemens Schickentanz | Tebernum Racing Team | DQ |
| 13.4.1975 | Euro GT Imola | 52 | #911 560 9121 | Hartwig Bertrams | Tebernum Racing Team | DQ |
| 13.4.1975 | Interserie Hockenheim | 53 | #005 0005 | Helmut Kelleners | Porsche Kremer Racing | DNA |
| 13.4.1975 | Euro GT Imola | 53 | #911 460 9052 | Claude Haldi | Porsche Club Romand | 1st |
| 13.4.1975 | Euro GT Imola | 54 | #911 460 9058 | William Vollery | | 3rd |