| 8.7.1973 | 6 h Nürburgring | 32 | | Koinigg / Heyer | Team Zakspeed | DNS |
| 8.7.1973 | 6 h Nürburgring | 35 | #BSG 2006 | Jörg Obermoser | Jörg Obermoser Eurorace GRD | DNA |
| 15.7.1973 | Sweden Falkenberg | 1 | | Bo Emanuelsson | Timex Racing Team | 1st |
| 15.7.1973 | Sweden Falkenberg | 2 | | Lennart Hall | Timex Racing Team | 5th |
| 15.7.1973 | Sweden Falkenberg | 8 | | Sten Axelsson | Palmolive Rapid Shave S.Axelsson RR | 17th |
| 15.7.1973 | Sweden Falkenberg | 31 | | Petter Diesen | Timex Racing Team | 6th |
| 15.7.1973 | Sweden Falkenberg | 41 | | Sören Morén | Kela Jeans | 7th |
| 15.7.1973 | Trans-Am Sanair | | | Everett / Buffum | Bobcor/Kendall | 7th |
| 15.7.1973 | DRM Diepholz | | | Werner Schommers | MC Lennep | DNF |
| 15.7.1973 | DRM Diepholz | | | Helmuth Koinigg | Schw. Garage/Zakspeed/Radio Luxemburg | 1st |
| 15.7.1973 | DRM Diepholz | | | Karl-Heinz Leibold | Karl-Heinz Leibold | DNF |
| 15.7.1973 | DRM Diepholz | | | Ernst Berg | Ernst Berg | DNF |
| 15.7.1973 | DRM Diepholz | | | Dieter Gartmann | Eichberg-Racing | 6th |
| 15.7.1973 | DRM Diepholz | | #BSG 2006 | Jörg Obermoser | Jörg Obermoser-Eurorace-GRD | 10th |
| 15.7.1973 | DRM Diepholz | | | Hartmut Kautz | Team Zakspeed | 4th |
| 22.7.1973 | 24 h Spa | 64 | | Fontaine / Lubin | Yvette Fontaine | DNF |
| 22.7.1973 | 24 h Spa | 78 | | Barrios / Zapico / Uriarte | Scuderia Brescia Corse | DNF |
| 22.7.1973 | SM Hockenheim [T2.0/GT2.0] | 290 | #BSG 2006 | Jörg Obermoser | Jörg Obermoser Eurorace | ?th |
| 28.7.1973 | Trans-Am Road America | 24 | | John Buffum | Bobcor Performance Corp. | 6th |
| 29.7.1973 | NTK Zandvoort | 72 | | Ernst Berg | Securicor | 3rd |
| 29.7.1973 | NTK Zandvoort | 73 | | Liane Engeman | | 4th |
| 5.8.1973 | DRM Nürburgring GP | 34 | | Hartmut Kautz | Team Zakspeed | 28th |
| 5.8.1973 | DRM Nürburgring GP | 35 | | Dieter Glemser | Schwabengarage-Team Zakspeed-Radio Luxemburg | 4th |
| 5.8.1973 | DRM Nürburgring GP | 36 | #BSG 2006 | Jörg Obermoser | Team Europa Möbel | DNF |
| 5.8.1973 | DRM Nürburgring GP | 37 | | Bo Emanuelsson | Timex Racing Team | 7th |
| 5.8.1973 | DRM Nürburgring GP | 38 | | Dieter Gartmann | Eichberg Racing | DNF |
| 5.8.1973 | DRM Nürburgring GP | 44 | | Werner Schommers | Motorsportclub Lennep e. V. | 11th |
| 5.8.1973 | DRM Nürburgring GP | 51 | | Karl-Heinz Leibold | Karl-Heinz Leibold | DNF |
| 12.8.1973 | Karlskoga [T+1.3/GT3.0] | 1 | | Petter Diesen | Timex Racing Team | 8th |
| 12.8.1973 | Karlskoga [T+1.3/GT3.0] | 2 | | Matti Kemiläinen | Gulf Team Kemiläinen | 7th |
| 12.8.1973 | Karlskoga [T+1.3/GT3.0] | 3 | | Tuisku Urpiala | Finnswede Racing | DNA |
| 12.8.1973 | Karlskoga [T+1.3/GT3.0] | 4 | | Bo Emanuelsson | Timex Racing Team | 3rd |
| 12.8.1973 | 4 h Zandvoort | 25 | | Mohr / Heyer | Team Zakspeed Radio Luxembourg | 6th |
| 12.8.1973 | 4 h Zandvoort | 26 | | Hartmut Kautz | Team Zakspeed Radio Luxembourg | DNA |
| 12.8.1973 | 4 h Zandvoort | 27 | | Berg / Dolk | Ernst Berg Racing | DNF |
| 12.8.1973 | 4 h Zandvoort | 28 | | Yvette Fontaine | Yvette Fontaine | DNA |
| 12.8.1973 | 4 h Zandvoort | 29 | | Hanson / Hanson | The Barbarians | 11th |
| 12.8.1973 | 4 h Zandvoort | 30 | | Leibold / Müller | Karl Heinz Leibold | DNF |
| 12.8.1973 | 4 h Zandvoort | 31 | | Barrios / Zapico | Rafael Barrios | 12th |
| 12.8.1973 | 4 h Zandvoort | 32 | | Uriarte / LeGuellec | Jose-Maria Uriarte | DNA |
| 19.8.1973 | DRM Kassel-Calden | 51 | #BSG 2006 | Jörg Obermoser | J. Obermoser Eurorace G.R.D. | ?th |
| 19.8.1973 | DRM Kassel-Calden | 52 | | Dieter Glemser | Schwabengarage-Team Zakspeed-Radio Luxemburg | ?th |
| 19.8.1973 | DRM Kassel-Calden | 53 | | Hartmut Kautz | Team Zakspeed | ?th |
| 19.8.1973 | DRM Kassel-Calden | 60 | | Werner Schommers | MSC Lennep | ?th |
| 19.8.1973 | DRM Kassel-Calden | 69 | | Dieter Gartmann | Eichberg Racing | DNA |
| 26.8.1973 | DRM Hockenheim Preis der Nationen | 103 | | Dieter Glemser | Schwabengarage-Team-Zakspeed-Radio-Luxemburg | DNF |
| 26.8.1973 | DRM Hockenheim Preis der Nationen | 104 | | Hartmut Kautz | Schwabengarage-Team-Zakspeed-Radio-Luxemburg | DNF |
| 26.8.1973 | DRM Hockenheim Preis der Nationen | 105 | #BSG 2006 | Jörg Obermoser | Jörg Obermoser, Eurorace | DNF |
| 26.8.1973 | DRM Hockenheim Preis der Nationen | 107 | | Werner Schommers | MSC Lennep e. V. | DNA |
| 26.8.1973 | Zandvoort [GT/T] | | | Liane Engeman | | ?th |
| 2.9.1973 | Knutstorp [T/GT+1.3] | 2 | | Petter Diesen | Timex Racing Team | DNA |
| 2.9.1973 | Knutstorp [T/GT+1.3] | 19 | | Robert Torrie | | DNA |
| 2.9.1973 | 6 h Paul Ricard | 26 | | Deen / Akersloot | Ernst Berg Racing | DNS |
| 2.9.1973 | 6 h Paul Ricard | 28 | | Hanson / Hanson | The Barbarians | 6th |
| 2.9.1973 | 6 h Paul Ricard | 29 | | Woodman / Rouse | VMW Motors - Team Esso Uniflo | DNF |
| 2.9.1973 | 6 h Paul Ricard | 30 | | Colzani / Mohr | Jolly Club | 11th |
| 2.9.1973 | 6 h Paul Ricard | 32 | | "Dex" / Dieudonné | Racing Team Michel Vaillant | 10th |
| 2.9.1973 | 6 h Paul Ricard | 33 | | Barrios / Zapico | Motor Tuning | DNF |
| 2.9.1973 | 6 h Paul Ricard | 34 | | Uriarte / LeGuellec | | DNF |
| 2.9.1973 | DRM Nürburgring 500 | 35 | | Dieter Glemser | Schwabengarage-Team Zakspeed-Radio Luxemburg | 4th |
| 2.9.1973 | 6 h Paul Ricard | 36 | | Leibold / Müller | | DNQ |
| 2.9.1973 | DRM Nürburgring 500 | 36 | | Hartmut Kautz | Schwabengarage-Team Zakspeed-Radio Luxemburg | 6th |
| 2.9.1973 | DRM Nürburgring 500 | 37 | #BSG 2006 | Jörg Obermoser | Jörg Obermoser Eurorace | 12th |
| 2.9.1973 | DRM Nürburgring 500 | 48 | | Werner Schommers | Motorsportclub Lennep e. V. | 8th |
| 8.9.1973 | Sweden Kinekulle | 1 | | Bo Emanuelsson | Timex Racing Team | 2nd |
| 8.9.1973 | Sweden Kinekulle | 14 | | Sten Axelsson | Palmolive Rapid Shave S.Axelsson RR | 5th |
| 8.9.1973 | Sweden Kinekulle | 28 | | Petter Diesen | Timex Racing Team | DNA |
| 9.9.1973 | DRM Norisring | 31 | | Dieter Glemser | Schwabengarage-Team Zakspeed Radio Luxemburg | 1st |
| 9.9.1973 | DRM Norisring | 34 | | Hartmut Kautz | Team Zakspeed | DNF |
| 9.9.1973 | DRM Norisring | 35 | | Peter Hanson | The Barbarians | 5th |
| 9.9.1973 | DRM Norisring | 38 | | Werner Schommers | Motorsportclub Lennep | 4th |
| 9.9.1973 | NTK Woensdrecht | 72 | | Ernst Berg | | ?th |
| 9.9.1973 | NTK Woensdrecht | 73 | | Liane Engeman | | ?th |
| 15.9.1973 | 100 mile Lime Rock 1 | 24 | | John Buffum | Libra International Racing | 36th |
| 15.9.1973 | 100 mile Lime Rock 2 | 24 | | John Buffum | Libra International Racing | 37th |
| 15.9.1973 | 100 mile Lime Rock 1 | | | Bert Everett | Bobcor | DNQ |
| 15.9.1973 | 100 mile Lime Rock 2 | | | Bert Everett | Bobcor | DNQ |
| 23.9.1973 | Tourist Trophy | 17 | | Vince Woodman | VMW Motors | DNF |
| 23.9.1973 | Tourist Trophy | 22 | | Uriarte / LeGuellec | Scuderia Brescia Corse - Broadspeed | 4th |
| 23.9.1973 | Tourist Trophy | 27 | | Nick May | Gerry Edmonds | DNF |
| 23.9.1973 | Tourist Trophy | 30 | | Bo Emanuelsson | Timex Racing Team | DNF |
| 23.9.1973 | Tourist Trophy | 31 | | Barrios / Zapico | Scuderia Brescia Corse - Broadspeed | 5th |
| 30.9.1973 | NTK Zandvoort | 72 | | Ernst Berg | Securicor | ?th |
| 30.9.1973 | NTK Zandvoort | 73 | | Liane Engeman | | ?th |
| 7.10.1973 | DRM Sauerland Hill Climb | 246 | | Dieter Glemser | Schw.-Garage/Zakspeed/Radio Luxemburg | 4th |
| 7.10.1973 | DRM Sauerland Hill Climb | | | Hartmut Kautz | Team Zakspeed | 10th |
| 7.10.1973 | DRM Sauerland Hill Climb | | | Werner Schommers | | DNS |
| 14.10.1973 | NTK Zandvoort | 72 | | Ernst Berg | Securicor | ?th |
| 14.10.1973 | NTK Zandvoort | 73 | | Liane Engeman | | ?th |
| 21.10.1973 | Zolder [T/GT2.0] | | | Hartmut Kautz | Team Zakspeed | 1st |
| 21.10.1973 | Zolder [T/GT2.0] | | | Rudi Hülskamp | | DNF |
| 21.10.1973 | Zolder [T/GT2.0] | | | Karl-Heinz Leibold | | DNF |
| 21.10.1973 | Zolder [T/GT2.0] | | | Werner Boller | | DNF |