| 22.3.1981 | DRM Zolder Bergischer Löwe | 9 | Kadett C GT/E | Günther Knippschild | Günther Knippschild | DNS |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 46 | Kadett C GT/E | Michael Degenhardt | Michael Degenhardt | 16th |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 47 | Kadett C GT/E | Christoph Esser | Christoph Esser | 14th |
| 22.3.1981 | CI Gr.2/4/5 Vallelunga | | | Pisani | | ?th |
| 29.3.1981 | DRM Nürburgring 300 | 9 | Kadett C GT/E | Günther Knippschild | Günther Knippschild | DNF |
| 29.3.1981 | DRM Nürburgring 300 | 49 | Kadett C GT/E | Michael Degenhardt | Michael Degenhardt | DNA |
| 29.3.1981 | DRM Nürburgring 300 | 50 | Kadett C | Christoph Esser | Christoph Esser | DNA |
| 5.4.1981 | DRM Hockenheim Jim Clark | 9 | Kadett C GT/E | Günther Knippschild | Autohaus Knippschild/OK Tuning | DNA |
| 5.4.1981 | DRM Hockenheim Jim Clark | 27 | Ascona | Heinrich Haag | Renngemeinschaft Niefern e.V. (ADAC) | 11th |
| 5.4.1981 | DRM Hockenheim Jim Clark | 42 | Kadett GT/E | Gerd Hoffmann | Gräber Power / Strauch Sporting | 13th |
| 13.4.1981 | 500 km Vallelunga | | Monza 3.0E | Scharpe / Weisheidinger | | 5th |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 11 | Kadett C GT/E | | Günther Knippschild | DNS |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 38 | Kadett GT/E | | Mich Opel Tuning | 22nd |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 41 | Ascona | | Mich Opel Tuning | DNF |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 49 | Kadett GT/E | | Pioneer HiFi Racing | 27th |
| 26.4.1981 | DRM Nürburgring Eifelrennen | 50 | Kadett GT/E | | Pioneer HiFi Racing | 29th |
| 3.5.1981 | Laguna Seca [GTU] | 68 | Manta A | Tony DiBenedetto | Tony DiBenedetto | 24th |
| 24.5.1981 | 1000 km Nürburgring | 58 | Ascona | Offermann / Mantzel | Pioneer Racing | 23rd |
| 24.5.1981 | 1000 km Nürburgring | 63 | Commodore | Röckel / Filthaut / Koerner | Pirmasens Automobil Club | DNA |
| 24.5.1981 | 1000 km Nürburgring | 64 | Monza | Nückel / Löffler / Vogt | Hugo Nückel | DNQ |
| 24.5.1981 | 1000 km Nürburgring | 73 | Monza 3.0E | Herler / Filthaut / Hühnermann | Gilden Koelsch | 42nd |
| 24.5.1981 | 1000 km Nürburgring | 91 | Ascona | Knudsen / Nielsen | Holger Knudsen | DNQ |
| 24.5.1981 | 1000 km Nürburgring | 92 | Kadett | Titz / Schütte | Mich Auto Tuning | 36th |
| 24.5.1981 | 1000 km Nürburgring | 93 | Ascona | Schäfer | Mich Auto Tuning | 39th |
| 24.5.1981 | 1000 km Nürburgring | 94 | Kadett | Duda / Duda / Wester | Lothar Mich | DNQ |
| 24.5.1981 | 1000 km Nürburgring | 95 | Ascona | Prinz / Walter | Veltmann Opel | 27th |
| 24.5.1981 | 1000 km Nürburgring | 103 | Kadett | Esser / Müller / Bähr | Pioneer Racing | DNF |
| 24.5.1981 | 1000 km Nürburgring | 104 | Kadett | Degenhardt / Esser / Offermann | Pioneer Racing | DNQ |
| 24.5.1981 | 1000 km Nürburgring | 105 | Ascona | Helmig / Dagenhardt | Pioneer Racing | 41st |
| 24.5.1981 | 1000 km Nürburgring | 109 | Kadett GT/E | Schmitz / Seifert | Ruebenach Automobil Club | DNQ |
| 24.5.1981 | 1000 km Nürburgring | 121 | Kadett | Schütte / Titz | Valvoline Deutschland | DNA |
| 24.5.1981 | CI Gr.2/4/5 Monza | | GT 1900 | Bonaventi | | ?th |
| 7.6.1981 | ETCC Salzburgring | | Ascona | Sepp Haider | | DNF |
| 14.6.1981 | GP Brno | 8 | Monza 3.0E | Scharpe / Weisheidinger | Mobil | DNF |
| 14.6.1981 | GP Brno | 26 | Ascona | Schäfer / Mich | Mich Opel Tuning | 9th |
| 14.6.1981 | GP Brno | 27 | Ascona | Walter / Prinz | Veltman Opel Tuning | 15th |
| 14.6.1981 | GP Brno | 40 | Ascona | Helmig / Haag | | DNF |
| 21.6.1981 | DRM Wunstorf | 9 | Kadett C GT/E | Günther Knippschild | Autohaus Knippschild | DNF |
| 28.6.1981 | CI Gr.2/4/5 Magione | | | Brandi | | ?th |
| 5.7.1981 | Vila Real | 68 | Ascona | António Carlos B. Conceição | António Carlos B. da Conceição | raced |
| 5.7.1981 | Vila Real | 72 | Kadett GT/E | Santos Pereira | José Manuel O. dos S. Pereira | 2nd |
| 12.7.1981 | DRM Salzburgring | 14 | Kadett C GT/E | Günther Knippschild | Autohaus Otto Knippschild | raced |
| 26.7.1981 | 24 h Spa | 30 | Monza 3.0E | Herler / Wansart / Weisheidinger | Gilden Kölsch Racing | DNQ |
| 26.7.1981 | 24 h Spa | 36 | Monza | Gallo / Palma / Calvi | G. Barba | DNQ |
| 26.7.1981 | Sears Point [GTU] | 68 | Manta A | Tony DiBenedetto | Tony DiBenedetto | 21st |
| 1.8.1981 | DRM Hockenheim GP | 9 | Kadett C GT/E | Günther Knippschild | Autohaus Knippschild | DNQ |
| 1.8.1981 | DRM Hockenheim GP | 48 | Kadett GT/E | Heinz Kilp | Heinz Kilp | DNA |
| 23.8.1981 | Ahvenisto [Gr.5 2.0] | 4 | Ascona | Markku Valtonen | | raced |
| 23.8.1981 | Ahvenisto [Gr.5 2.0] | 8 | Kadett C GT/E | Pekka Korkeakoski | | raced |
| 23.8.1981 | DRM Zolder Westfalen | 9 | Kadett C GT/E | Günther Knippschild | Günther Knippschild | 12th |
| 23.8.1981 | DRM Zolder Westfalen | 27 | Kadett GT/E | Heinz Kilp | Heinz Kilp | 14th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 39 | Kadett GT/E | Heinz Kilp | | 19th |
| 6.9.1981 | DRM Hockenheim Hessen Cup | 46 | Ascona | Heinrich Haag | | 15th |
| 13.9.1981 | Tourist Trophy | 15 | Monza 3.0E | Herler / Filthaut / Weisheidinger | Herbert Herler | DNF |
| 13.9.1981 | Tourist Trophy | 63 | Monza 3.0E | Herler / Weisheidinger | Gilden-Kolsch Racing Team | DNA |
| 13.9.1981 | Tourist Trophy | 64 | Monza | Rossiter / Cleland | Dealer Opel Team | raced |
| 27.9.1981 | ETCC Zolder | | Monza 3.0E | Scharpe / Weisheidinger | | 6th |
| 4.10.1981 | 24 h Nürburgring | 2 | Monza 3.0E | Herler / Stommelen / Weisheidinger | Gilden Kölsch Racing Team | 2nd |
| 4.10.1981 | 24 h Nürburgring | 7 | Commodore GSE | Lohrer / Räk / Lingen | | 74th |
| 4.10.1981 | 24 h Nürburgring | 12 | Monza 3.0E | Gallo / Palma / Gaetani | | 30th |
| 4.10.1981 | 24 h Nürburgring | 32 | Kadett GT/E | Speer / Wiegers / Menzefricke | | 55th |
| 4.10.1981 | 24 h Nürburgring | 33 | Kadett GT/E | Offermann / Winkler / Esser | Mantzel und Kissling Tuning | DNF |
| 4.10.1981 | 24 h Nürburgring | 34 | Ascona 2000 | Peil / Offermann / Hennes | Mantzel und Kissling Tuning | DNF |
| 4.10.1981 | 24 h Nürburgring | 38 | Kadett GT/E | Habitz / Duwe / Wollgarten | | 14th |
| 4.10.1981 | 24 h Nürburgring | 40 | Ascona 2000 | Walter / Prinz | Veltmann Tuning | DNF |
| 4.10.1981 | 24 h Nürburgring | 42 | Kadett GT/E | Wagenknecht / Kleesattel / Hilger | Fenstermann Rennsport | DNF |
| 4.10.1981 | 24 h Nürburgring | 45 | Kadett GT/E | Törkel / Hübner / Benninghoff | | DNF |
| 4.10.1981 | 24 h Nürburgring | 49 | Kadett GT/E | Duda / Duda / Schütte | Mich Opel Tuning | 24th |
| 4.10.1981 | 24 h Nürburgring | 55 | Kadett GT/E | Imhof / Gollombeck / Löffler | Mendener Automobil Sport Club e. V. im ADAC | 43rd |
| 4.10.1981 | 24 h Nürburgring | 57 | Ascona 2000 | Leschus / Priebe / Zimmermann | Hans-Peter Schaffrath | DNF |
| 4.10.1981 | 24 h Nürburgring | 58 | Kadett GT/E | Dobrun / Schaffrath / Siebel | | DNF |
| 4.10.1981 | 24 h Nürburgring | 60 | Ascona | Hirt / Brück / Burdenski | | 51st |
| 4.10.1981 | 24 h Nürburgring | 61 | Kadett GT/E | Schnurpfeil / Tiedemann / Schestak | AC Ulmenau e. V. im ADAC | 50th |
| 4.10.1981 | 24 h Nürburgring | 67 | Kadett GT/E | Schäfer / Gürthler / Strycek | Mich Opel Tuning | 18th |
| 4.10.1981 | 24 h Nürburgring | 75 | Ascona | Helmig / Grohs / Peil | Mantzel und Kissling Tuning | 19th |
| 1.11.1981 | CI Gr.2/4/5 Vallelunga | | Kadett | Castelli | | ?th |
| 1.11.1981 | CI Gr.2/4/5 Vallelunga | | Kadett | Freitag | | ?th |
| 1981 | Vila do Conde | 78 | Kadett GT/E | Oswaldo Oliveira | Oswaldo Oliveira | 8th |
| 1981 | Estoril | | Ascona | Carlos Rodrigues | | 6th |