| 12.3.1978 | DRM Zolder Bergischer Löwe | 1 | Celica Liftback Turbo (A20) | Rolf Stommelen | Toyota Deutschland | DNF |
| 27.3.1978 | Benelux Zandvoort [Gr.2-5 1.6] | 33 | Corolla | Nico Versteegh | Compier Autobedrijf B.V. | 6th |
| 2.4.1978 | Marlboro Cup Zolder [1.6] | 35 | Corolla | Marc Duez | Business for R. | DNA |
| 2.4.1978 | Marlboro Cup Zolder [1.6] | 36 | Celica GT | Claude Holvoet | Emile Holvoet | DNA |
| 2.4.1978 | Marlboro Cup Zolder [1.6] | 37 | Celica | Ignazio Salvo | Boudouin Viset. | DNA |
| 16.4.1978 | SM Monza | | Corolla | Friedrich Straumann | | ?th |
| 23.4.1978 | GP Zolder [1.6] | 35 | Corolla | Marc Duez | Business for Racing | DNA |
| 23.4.1978 | GP Zolder [1.6] | 36 | Celica GT | Claude Holvoet | Emile Holvoet | 4th |
| 23.4.1978 | GP Zolder [1.6] | 37 | Celica | Ignazio Salvo | Baudoin Visétoise | DNA |
| 23.4.1978 | GP Zolder [1.6] | 43 | Celica GT | José Dries | Ec. Ardennes | DNA |
| 23.4.1978 | GP Zolder [1.6] | 45 | Celica GT | Henri Van Gompel | Remco Team | 8th |
| 23.4.1978 | SM Dijon [Gr.4/Gr.5] | | Corolla | Friedrich Straumann | | 3rd |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 1 | Celica Liftback Turbo (A20) | Rolf Stommelen | Toyota-Deutschland | DNF |
| 30.4.1978 | Laguna Seca [GTU] | 6 | | Marta Leonard | Robert E. Leonard | 23rd |
| 14.5.1978 | 6 h Silverstone | 68 | Celica | Cutting / Mayers | Hughes of Beaconsfield | DNQ |
| 28.5.1978 | 1000 km Nürburgring | 6 | Celica Liftback Turbo (A20) | Stommelen / Ertl | Toyota-Deutschland | DNF |
| 28.5.1978 | 1000 km Nürburgring | 70 | Celica | Gürthler / Schmitz-Moormann / Haoben | Postert-Toyota-Team | 39th |
| 18.6.1978 | DRM Mainz-Finthen | 1 | Celica Liftback Turbo (A20) | Rolf Stommelen | Toyota-Deutschland GmbH | 8th |
| 9.7.1978 | GP Nürburgring | 83 | Celica | Przyklenk / Helten | Toyota Vollmeyer | DNA |
| 9.7.1978 | GP Nürburgring | 88 | Celica | Gürthler / Schmitz-Moormann | Postert Toyota | ?th |
| 9.7.1978 | GP Nürburgring | 91 | Celica GT | Janitschek / Schäfer | Toyota Tuning Thönnes | ?th |
| 23.7.1978 | 24 h Spa | 64 | 2000 GT | Desoet / Savary / Vanderrest | International Motor Cy | 11th |
| 23.7.1978 | 24 h Spa | 89 | Celica | Cremer / Kessler | International Motor Cy | DNQ |
| 23.7.1978 | 24 h Spa | 90 | Celica | Lambert / Laffeach | International Motor Cy | DNQ |
| 23.7.1978 | 24 h Spa | 91 | Sprinter Trueno | Boutsen / Lombardi / Duez | Luigi Racing | DNF |
| 23.7.1978 | 24 h Spa | 92 | Sprinter Trueno | Holvoet / Garcin / Moortgat | International Motor Cy | 13th |
| 23.7.1978 | 24 h Spa | 95 | Celica | Remion / Clohse | East Belgian Racing Team | DNF |
| 29.7.1978 | DRM Hockenheim GP | 1 | Celica Liftback Turbo (A20) | Rolf Stommelen | Toyota Deutschland | DNF |
| 29.7.1978 | DRM Hockenheim GP | 1T | Celica Liftback Turbo (A20) | Rolf Stommelen | Toyota Deutschland | unused |
| 29.7.1978 | DRM Hockenheim GP | 92 | Celica GT | Gerhard Lipp | | DNF |
| 30.7.1978 | Sears Point [GTU] | 6 | | Marta Leonard | | 21st |
| 6.8.1978 | ETCC Zandvoort | 25 | Celica | Bonefeld / Gürthler | Toyota Team Postert | DNF |
| 13.8.1978 | Trans-Am Brainerd | 76 | Corolla | Scott Burns | Mini Cars Special | DNA |
| 20.8.1978 | DRM Zolder Westfalen | 1 | Celica Liftback Turbo (A20) | Rolf Stommelen | Toyota Deutschland, Optische Werke G. Rodenstock | DNF |
| 17.9.1978 | Norisring Trophäe | 1 | Celica Liftback Turbo (A20) | Rolf Stommelen | Toyota-Deutschland/Optische Werke G. Rodenstock | DNA |
| 17.9.1978 | DRM Norisring | 1 | Celica Liftback Turbo (A20) | Rolf Stommelen | Optische Werke G. Rodenstock/Toyota-Deutschland | DNA |
| 17.9.1978 | Tourist Trophy | 51 | Celica GT | Gürthler / Houben | Postert Toyota Team, Essen | ?th |
| 1.10.1978 | DRM Nürburgring Supersprint | 1 | Celica Liftback Turbo (A20) | | Toyota Deutschland | DNA |
| 8.10.1978 | 24 h Nürburgring | 55 | Sprinter Trueno | Cremer / Braillard / Duez | East Belgian Racing Team | DNF |
| 8.10.1978 | 24 h Nürburgring | 56 | Celica GT | Remion / Clohse / Hardy | East Belgian Racing Team | DNF |
| 8.10.1978 | 24 h Nürburgring | 57 | Celica GT | Bieler / Lohmann / Gamalski | Rhein. Westf. Automobil Club Düsseldorf | 50th |
| 8.10.1978 | 24 h Nürburgring | 58 | Celica GT | Janitschek / Schäfer / Gürthler | Toyota Tuning Thönnes | 10th |
| 29.10.1978 | 500 mile Fuji | 25 | Celica | Yamamoto / Suzuki | OK Racing | 9th |
| 4.11.1978 | 1000 km Kyalami | 20 | Corolla | Roos / Taylor | W. Roos | raced |
| 1978 | 100 laps Magny-Cours | | | Garcin / Dubreuil | | 17th |