| 13.4.1975 | Daily Express Silverstone | 6 | #HU67 | Richard Lloyd | Roger Heavens | 4th |
| 13.4.1975 | Daily Express Silverstone | 7 | | Nigel Clarkson | Hurford Jones | 10th |
| 13.4.1975 | Daily Express Silverstone | 8 | #T290-HU22 | Ian Bracey | Chandler Ibec International Racing with DRA | 8th |
| 13.4.1975 | Interserie Hockenheim | 48 | | Alberto Landini | Gulf Racing Team, Switzerland | DNA |
| 13.4.1975 | Casale [Sports] | | #T292-HU63 | Mauro Nesti | | 1st |
| 20.4.1975 | 1000 km Monza | 27 | #T292-HU62 | Finotto / Facetti | Martino Finotto | DNA |
| 20.4.1975 | 1000 km Monza | 31 | | Ferrier / Lapeyre | Sociéte ROC | DNF |
| 20.4.1975 | 1000 km Monza | 32 | | Servanin / Fréquelin | Racing Organisation Course | DNA |
| 20.4.1975 | 1000 km Monza | 33 | #T292-HU40 | Jones / Sheldon | Victoria Sporting Club Racing | 14th |
| 20.4.1975 | 1000 km Monza | 34 | | Turizio / Nappi | Vesuvio | DNS |
| 20.4.1975 | 1000 km Monza | 35 | | Zanuso / Fallo | Roger Heavens Racing | 12th |
| 20.4.1975 | 1000 km Monza | 36 | #T290-HU22 | Crespin / Joscelyne / Harrower | Dorset Racing | 11th |
| 4.5.1975 | 1000 km Spa | 21 | #T290-HU22 | Crespin / Bracey | Dorset Racing | 13th |
| 4.5.1975 | 1000 km Spa | 24 | #T292-HU42 | Hanson / Uriarte | Miles Roysten | DNF |
| 4.5.1975 | 1000 km Spa | 25 | | Lloyd / Desentis | Roger Heavens Racing | DNF |
| 4.5.1975 | 1000 km Spa | 33 | #T292-HU40 | Jones / Sheldon | Chubb | DNF |
| 4.5.1975 | 1000 km Spa | 37 | | | ROC Racing | DNA |
| 11.5.1975 | SM Casale | | | Hansmarkus Huber | | raced |
| 18.5.1975 | Coppa Florio | 14 | #T290-HU22 | Crespin / Harrower | Dorset Racing Associates | 8th |
| 18.5.1975 | Coppa Florio | | | Zanuso / Heavens | Roger Heavens Racing | DNA |
| 25.5.1975 | Thruxton | | | John Lepp | | 1st |
| 25.5.1975 | CI Gr.5 Mugello | | | Cosimo Turizio | | 1st |
| 1.6.1975 | 1000 km Nürburgring | 23 | #T292-HU62 | Mohr / Finotto | Jolly Club | DNA |
| 1.6.1975 | 1000 km Nürburgring | 26 | #T292-HU40 | Jones / Sheldon / Barrios | Steward Chubb-Racing | 15th |
| 1.6.1975 | 1000 km Nürburgring | 34 | #T292-HU42 | Scott / Uriarte / Hanson | Miles-Royston-Racing | DNF |
| 1.6.1975 | 1000 km Nürburgring | 35 | #T290-HU22 | Crespin / Bracey / Joscelyne | Chandler-Ibec-Int.-Racing | 22nd |
| 1.6.1975 | 1000 km Nürburgring | 36 | | LeGuellec / Zanuso | Roger-Heavens | DNF |
| 1.6.1975 | 1000 km Nürburgring | 41 | | Huber / Hürzeler | Heini-Mader-Racing-Components | DNF |
| 1.6.1975 | 1000 km Nürburgring | 45 | | Servanin / Ferrier | STE ROC - La pierre du Nord - Motul | 17th |
| 1.6.1975 | 1000 km Nürburgring | 46 | | Desentis / LeGuellec | Oscar Desentis | DNA |
| 15.6.1975 | 24 h Le Mans | 22 | #T292-HU62 | Finotto / Facetti | Scuderia Jolly Club | DNA |
| 15.6.1975 | 24 h Le Mans | 25 | | Jacques Joliat | Racing Team Schulthess | DNA |
| 15.6.1975 | 24 h Le Mans | 27 | | Ferrier / Lapeyre / Ethuin | Société R.O.C. | DNF |
| 15.6.1975 | 24 h Le Mans | 28 | #HU70? | Servanin / Henry / Dufréne | Société R.O.C. | 24th |
| 15.6.1975 | Interserie Mainz-Finthen | 52 | #HU66 | Dieter Münch | Dieter Münch | 9th |
| 15.6.1975 | SM Misano | | | Landini | | raced |
| 22.6.1975 | Euro 2L Brands Hatch | 19 | #T290-HU22 | Ian Bracey | Chandler Ibec Int. Racing with DRA | DNS |
| 22.6.1975 | Euro 2L Brands Hatch | 20 | | Richard Lloyd | Roger Heavens | DNF |
| 22.6.1975 | Euro 2L Brands Hatch | 21 | #T292-HU42 | Richard Scott | Miles Roystone Racing | DNF |
| 22.6.1975 | Euro 2L Brands Hatch | 22 | #T292-HU40 | Richard Jones | Stewart Chubb | 7th |
| 22.6.1975 | Euro 2L Brands Hatch | 24 | | Manrico Zanuso | Manrico Zanuso | 8th |
| 22.6.1975 | Euro 2L Brands Hatch | 26 | | Cosimo Turizio | Scuderia Vesuvio | DNS |
| 29.6.1975 | 1000 km Zeltweg | 19 | #T292-HU40 | Rieder / Kaiser | Stuart Chubb | DNF |
| 29.6.1975 | 1000 km Zeltweg | 25 | #T290-HU22 | Crespin / Bracey | Dorset Racing Associates | 8th |
| 29.6.1975 | 1000 km Zeltweg | 26 | | Zanuso / Müller | Roger Heavens Racing | DNF |
| 29.6.1975 | 1000 km Zeltweg | 33 | | LeGuellec / Stuppacher | Roger Heavens Racing | NC |
| 29.6.1975 | 1000 km Zeltweg | 38 | | Ferrier / Servanin | Sociéte ROC | 15th |
| 29.6.1975 | 1000 km Zeltweg | 40 | #T292-HU62 | Mohr / Finotto | Manfred Mohr | 6th |
| 6.7.1975 | Karlsruhe Hockenheim [Gr.5/Gr.7] | | #HU66 | Dieter Münch | Dieter Münch | 4th |
| 6.7.1975 | Karlsruhe Hockenheim [Gr.5/Gr.7] | | #T290-HU22 | Ian Bracey | Dorset Racing Associates | 6th |
| 13.7.1975 | SCCA National Brainerd [ASR+BSR+AP+BP+CP+AS] | 69 | #HU75 | Mike Hall | | DNA |
| 13.7.1975 | RAC Knockhill | | | Richard Robarts | | 6th |
| 13.7.1975 | RAC Knockhill | | #T290-HU22 | Ian Harrower | Dorset Racing Associates | 3rd |
| 13.7.1975 | RAC Knockhill | | | Nigel Clarkson | | 4th |
| 20.7.1975 | Interserie Hockenheim | 445 | #T290-HU22 | Claude Crespin | Chandler Ibec Int. Racing | DNA |
| 20.7.1975 | Interserie Hockenheim | 446 | | Alberto Landini | Alberto Landini | 8th |
| 24.8.1975 | Mainz-Finthen [SRP] | 21 | #HU66 | Dieter Münch | Dieter Münch | ?th |
| 24.8.1975 | Road America Handicap | 48 | | Doug Schulz | Dana Racing | DNA |
| 24.8.1975 | Interserie Zandvoort | 57 | | Oscar Desentis | Roger Heavens | DNA |
| 24.8.1975 | Interserie Zandvoort | 61 | #T290-HU22 | Brian Joscelyne | Chandler Ibec Int. Racing | 16th |
| 24.8.1975 | Road America Handicap | 69 | #HU75 | Mike Hall | United Racing Ltd. | 5th |
| 24.8.1975 | Interserie Zandvoort | 73 | #T292-HU40 | Richard Jones | Stewart-Chubb-Racing | DNA |
| 31.8.1975 | Euro 2L Hockenheim | 24 | #T290-HU22 | Claude Crespin | Chandler IBEC Int. Racing with DRA | DNA |
| 31.8.1975 | Euro 2L Hockenheim | 25 | | Alberto Landini | FRC Zürich | DNA |
| 31.8.1975 | Euro 2L Hockenheim | 26 | | Oscar Desentis | Roger Heavens | DNA |
| 31.8.1975 | Euro 2L Hockenheim | 27 | | Manrico Zanuso | Roger Heavens | 10th |
| 31.8.1975 | Euro 2L Hockenheim | 28 | #T292-HU40 | Franz Kaiser | Stewart Chubb | DNA |
| 31.8.1975 | Euro 2L Hockenheim | 29 | | François Servanin | Racing Organisation Course | 13th |
| 31.8.1975 | Euro 2L Hockenheim | 30 | | Charly Schirmer | FRC Zürich | 12th |
| 31.8.1975 | Zolder [Sports] | | #T290-HU22 | Ian Bracey | Dorset Racing Associates | 4th |
| 7.9.1975 | Interserie Nürburgring Supersprint | | #T290-HU22 | Claude Crespin | Dorset Racing Associates | DNQ |
| 14.9.1975 | Ingliston [S2.0] | 3 | #T292-HU40 | Richard Robarts | Stuart Chubb | DNF |
| 14.9.1975 | Ingliston [S2.0] | 4 | #T290-HU22 | Ian Bracey | Chandler International Racing with DRA | DNA |
| 14.9.1975 | Ingliston [S2.0] | 5 | | | Roger Heavens | DNA |
| 14.9.1975 | Ingliston [S2.0] | 6 | | | Roger Heavens | DNA |
| 14.9.1975 | Ulm [SRP] | | #HU66 | Dieter Münch | Dieter Münch | 4th |
| 28.9.1975 | Interserie Hockenheim | 59 | | Ian Bracey | Chandler IBEC Int. Racing | ?th |
| 28.9.1975 | Interserie Hockenheim | 61 | | Manrico Zanuso | Roger Heavens | DNA |
| 28.9.1975 | Interserie Hockenheim | 69 | #T292-HU40 | Alan Jones | Stewart Chubb Racing | DNA |
| 1.11.1975 | US Champions Road Atlanta [BSR] | 48 | | Doug Schulz | Dana Machine Co. | 4th |
| 1.11.1975 | US Champions Road Atlanta [BSR] | 69 | #HU75 | Mike Hall | United Racing Ltd. | 1st |