A temporada de 75 do Mundial de Marcas nao contou os pontos das 24 horas de Le Mans vencido pela Mirage e os prototipos nao correram em Daytona, deixando livre a vitoria para o Porsche Carrera. O Alpine-Renault estreou bem Com a primeira vitoria de um motor turbo em Mugello, mas o resto do campeonato foi dominado pelos italianos da Alfa Romeo. Os principais pilotos da equipe foram: Arturo Merzario, Jacky Ickx, Jacques Lafitte, Henri Pescarolo, Derek Bell e Jochen Mass24 Horas de Daytona - Data: 2.2.1975 (round 1)1st 59 Peter Gregg/Hurley Haywood - Porsche Carrera RSR2nd 11 Keyser / Sprowls / Contreras - Porsche Carrera RSR3rd 23 Kemp / Baird - Porsche Carrera RSR4th 30 Bienvenue/George Dyer - Porsche Carrera RSR5th 4 Bill Webbe/Dickinson/Theodoracopulos - Porsche Carrera RSR6th 43 O'Steen / Helmick / Graves - Porsche Carrera RSR7th 71 Woodner / Phillips - Ferrari 365 GTB/48th 14 Al Holbert/Eliot Forbes-Robinson - Porsche Carrera RSR9th 5 Rojas/Hector Rebaque/van Beuren, Jr. - Porsche Carrera RSR10th 60 Rusty Bond/Rollin/Belperche - Porsche 911 SData: 23.3.1975 - 1000 km de Mugello (round 2)1st 5 Jean-Pierre Jabouille/Gerhard Larrousse - Alpine-Renault A441 Turbo2nd 1 Arturo Merzario/Jacky Ickx - Alfa Romeo T33/TT/12 CC3rd 6 Herbert Muller/Gjis van Lennep - Porsche 908/3-6 Turbo4th 2 Henri Pescarolo/Derek Bell - Alfa Romeo T33/TT/12 CC5th 24 Hine / Grob - Chevron B31 Ford-Hart6th 8 Lombardi / "Beaumont" - Alpine-Renault A4417th 3 Jean-Pierre Jarier/Jean-Pierre Beltoise - Ligier JS2 Ford8th 11 Edgard Barth/Kraus/Casoni - Porsche 908/39th 44 Manfred Schurti/Toine Hezemans/John Fitzpatrick - Porsche Carrera RSR10th 52 Schickentanz / Bertrams / Wisell - Porsche Carrera RSRData: 6.4.1975 - 800 km de Dijon Prenois (round 3)1st 2 Arturo Merzario/Jacques Laffite - Alfa Romeo T33/TT/122nd 10 Reinhold Jost/Casoni - Porsche 908/3 Turbo3rd 18 Grob / Hine - Chevron B31 Hart4th 1 Henri Pescarolo/Derek Bell - Alfa Romeo T33/TT/125th 33 John Fitzpatrick/Toine Hezemans - Porsche Carrera RSR6th 4 Francois Migault/Jean-Pierre Jarier - Ligier JS2 Ford7th 8 Schickentanz / Bertrams / Wisell - Porsche Carrera RSR8th 26 Claude Ballot-Lena/Bob Wollek - Porsche Carrera RSR9th 7 Herbert Muller/Gjis van Lennep - Porsche 908/3 Turbo10th 9 Degoumois / Belin - Lola T280 Ford1000 Km de Monza - Data: 20.4.1975 (round 4)1st 2 Arturo Merzario/Jacques Laffite - Alfa Romeo T33/TT/122nd 5 Reinhold Jost/Casoni - Porsche 908/3 Turbo3rd 4 Gerhard Larrousse/Jean-Pierre Jabouille - Alpine-Renault A442 Turbo4th 15 Lombardi / "Beaumont" - Alpine-Renault A4415th 6 Edgard Barth/Kraus - Porsche 908/36th 77 Toine Hezemans/Manfred Schurti/John Fitzpatrick - Porsche Carrera RSR7th 78 John Fitzpatrick/Toine Hezemans/Manfred Schurti - Porsche Carrera RSR8th 22 Robin Smith/Robarts - Chevron B23 Ford9th 81 Schickentanz / Bertrams / Wisell - Porsche Carrera RSR10th 21 "Gimax" / Alberti - Chevron B21 FordData: 4.5.1975 - 1000 Kilometros de Spa Francorchamps (round 5)1st 2 Henri Pescarolo/Derek Bell - Alfa Romeo T33/TT/122nd 1 Jacky Ickx/Arturo Merzario - Alfa Romeo T33/TT/123rd 60 Peltier/Herbert Muller - BMW 3.0 CSL4th 42 Haldi / Beguin - Porsche Carrera RSR5th 43 Claude Ballot-Lena/Jean-Claude Andruet - Porsche Carrera RSR6th 41 Schickentanz / Bertrams / Wisell - Porsche Carrera RSR7th 6 Edgard Barth/Casoni/Reinhold Jost - Porsche 908/38th 40 Bertrams / Wisell - Porsche Carrera