| 24.6.1973 | 1000 km Zeltweg | 8 | #911 360 0686 R7 | Koinigg / Schurti | Martini Racing Porsche AG | 9th |
| 24.6.1973 | 1000 km Zeltweg | 9 | | George Follmer | Martini Racing Porsche AG | DNA |
| 24.6.1973 | Euro GT Nivelles | 12 | #911 360 1045 | Bengt Ekberg | Team Kubaro Racing Schw. | 3rd |
| 24.6.1973 | Euro GT Nivelles | 15 | #911 360 0185 | Martin Birrane | Crowne Racing Ltd. | ?th |
| 24.6.1973 | Euro GT Nivelles | 19 | | Helmut Henzler | Henzler | 6th |
| 24.6.1973 | Euro GT Nivelles | 20 | | Paul Keller | Porsche Kremer Racing | DNF |
| 24.6.1973 | Euro GT Nivelles | 26 | #911 360 0885 | Clemens Schickentanz | Oldenkott Pipes Racing | 1st |
| 24.6.1973 | Euro GT Nivelles | 28 | | William Vollery | Porsche Club Romand | 7th |
| 24.6.1973 | Norisring [GT] | 80 | #911 360 1329 | Reinhardt Stenzel | Reinhard Stenzel | 2nd |
| 24.6.1973 | 1000 km Zeltweg | | #911 360 0328 R4 | | Martini Racing Porsche AG | unused |
| 1.7.1973 | DRM Mainz-Finthen | 12 | #911 360 0885 | Clemens Schickentanz | Oldenkott Tobacco and Pipes Racing | 2nd |
| 1.7.1973 | DRM Mainz-Finthen | 25 | #911 360 1183 | Hans-Peter Ziegler | Hans-Peter Ziegler | 6th |
| 1.7.1973 | Vila Real | 33 | | John Rulon-Miller | | DNF |
| 1.7.1973 | DRM Mainz-Finthen | | #911 360 1329 | Reinhardt Stenzel | Auto Fox Racing | DNF |
| 4.7.1973 | 250 mile Daytona Paul Revere | 76 | #911 360 0785 | George Stone | Silverstone Racing Team | 6th |
| 8.7.1973 | Euro GT Estoril | 4 | #911 360 0885 | Clemens Schickentanz | Porsche Kremer Racing | 2nd |
| 8.7.1973 | Euro GT Estoril | 7 | | Helmut Henzler | | 6th |
| 8.7.1973 | Euro GT Estoril | 8 | | Paul Keller | Porsche Kremer Racing | 1st |
| 8.7.1973 | Euro GT Estoril | 18 | #911 360 1045 | Kurt Simonsen | Team Kubero | 5th |
| 8.7.1973 | Euro GT Estoril | 19 | #911 360 0185 | Martin Birrane | Crowne Racing | 7th |
| 8.7.1973 | DARM Niederstetten | 189? | | Heinz-Otto Raufer | Heinz Otto Raufer | 1st |
| 8.7.1973 | DARM Niederstetten | | #911 360 0636 | Rolf Göring | Autohaus Max Moritz | 3rd |
| 15.7.1973 | 6 h Mid-Ohio | 9 | #911 360 0386 | Bytzek / Bytzek | Bytzek Automotive | 7th |
| 15.7.1973 | Trans-Am Sanair | 14 | #911 360 0307 R3 | Al Holbert | Holbert's Porsche-Audi | 4th |
| 15.7.1973 | Sweden Falkenberg | 25 | | Bengt Ekberg | Team Kubero Porsche Racing | 3rd |
| 15.7.1973 | Sweden Falkenberg | 30 | | Jan Lundgardh | Team Castrol | 4th |
| 15.7.1973 | Trans-Am Sanair | 70 | #911 360 0601 | Milt Minter | Bob Harmon Racing | 23rd |
| 15.7.1973 | DRM Diepholz | 104 | #911 360 0885 | Clemens Schickentanz | Oldenkott Pipes and Tobacco Racing | 3rd |
| 15.7.1973 | DRM Diepholz | 111 | | Rolf Stommelen | Porsche Kremer-Racing Team | 1st |
| 15.7.1973 | Diepholz [GT+2.0} | | | Josef Brambring | Porsche-Kremer-Racing Team | ?th |
| 15.7.1973 | DRM Diepholz | | | Josef Brambring | Porsche-Kremer-Racing Team | DNS |
| 15.7.1973 | DRM Diepholz | | #911 360 1045 | Kurt Simonsen | | 9th |
| 15.7.1973 | Trans-Am Sanair | | #911 360 0785 | Mike Downs | Silverstone Ent. | 5th |
| 15.7.1973 | DARM Hockenheim [GT+1.6] | | #911 230 1195 | Anton Fischhaber | Toni Fischhaber | 3rd |
| 15.7.1973 | DARM Hockenheim [GT+1.6] | | #911 360 1329 | Reinhardt Stenzel | Auto-Fox-Racing | 2nd |
| 21.7.1973 | 6 h Watkins Glen | 14 | #911 360 0307 R3 | Holbert / McComb | Holbert's Porsche-Audi | DNF |
| 21.7.1973 | 6 h Watkins Glen | 59 | #911 360 0686 R7 | Gregg / Haywood | Brumos Porsche-Audi Corp. | 7th |
| 21.7.1973 | 6 h Watkins Glen | 70 | #911 360 0601 | Minter / Harmon | Bob Harmon Racing | DNF |
| 21.7.1973 | 6 h Watkins Glen | 76 | #911 360 0785 | Downs / Kelly | Silverstone Enterprises | DNS |
| 22.7.1973 | Can-Am Watkins Glen | 58 | #911 360 0686 R7 | Peter Gregg | Brumos Racing | 9th |
| 28.7.1973 | Trans-Am Road America | 14 | #911 360 0307 R3 | Al Holbert | Holbert's Porsche Audi, Inc. | 3rd |
| 28.7.1973 | Trans-Am Road America | 70 | #911 360 0601 | Milt Minter | Bob Harmon Racing | 5th |
| 29.7.1973 | NTK Zandvoort | 81 | | Nico Chiotakis | Team 4711 Sir Irish Moss | 2nd |
| 5.8.1973 | DRM Nürburgring GP | 19 | #911 360 1183 | Hans-Peter Ziegler | Hans-Peter Ziegler | 13th |
| 5.8.1973 | Euro GT Thruxton | 33 | #911 360 0885 | Clemens Schickentanz | Porsche Kremer Racing | 3rd |
| 5.8.1973 | Euro GT Thruxton | 38 | | Paul Keller | Porsche Kremer Racing | 4th |
| 5.8.1973 | Euro GT Thruxton | | | Helmut Henzler | | DNS |
| 5.8.1973 | Euro GT Thruxton | | | Roland Larsson | | DNS |
| 5.8.1973 | Euro GT Thruxton | | #911 360 0847 | Georg Loos | Gelo Racing Team | raced |
| 5.8.1973 | Euro GT Thruxton | | #911 360 0185 | Martin Birrane | | raced |
| 5.8.1973 | Euro GT Thruxton | | #911 360 1045 | Bengt Ekberg | Team Kubero | raced |
| 5.8.1973 | SCCA Riverside Copa Turismo | | #911 360 0614 | Diego Febles | | 1st |
| 5.8.1973 | Euro GT Thruxton | | | Kurt Simonsen | | 5th |
| 5.8.1973 | Euro GT Thruxton | | | Bernard Chenevière | Porsche Club Romand | 6th |
| 12.8.1973 | Karlskoga [T+1.3/GT3.0] | 16 | | Jan Lundgardh | Team Castrol | 6th |
| 12.8.1973 | Karlskoga [T+1.3/GT3.0] | 29 | | Bengt Ekberg | Team Kybero-Porsche | 2nd |
| 12.8.1973 | Karlskoga [T+1.3/GT3.0] | 30 | | Roland Larsson | Team Kybero-Porsche | 5th |
| 19.8.1973 | DRM Kassel-Calden | 4 | #911 360 0885 | Clemens Schickentanz | Oldenkott-Tobacco and Pipes-Racing | DNF |
| 19.8.1973 | Trans-Am Edmonton | 14 | #911 360 0307 R3 | Holbert / Minter | Holbert's Porsche Audi | 4th |
| 19.8.1973 | DRM Kassel-Calden | | #911 360 1329 | Reinhardt Stenzel | Reinhardt Stenzel | ?th |
| 26.8.1973 | Euro GT Hockenheim | 3 | | John Fitzpatrick | Porsche Kremer Racing Team | DNA |
| 26.8.1973 | Euro GT Hockenheim | 5 | #911 360 0185 | Martin Birrane | Crowne Racing Ltd. | DNA |
| 26.8.1973 | Euro GT Hockenheim | 6 | | Paul Keller | Porsche Kremer Racing Team | DNF |
| 26.8.1973 | Euro GT Hockenheim | 7 | #911 360 1045 | Bengt Ekberg | Team Kubero Racing | 5th |
| 26.8.1973 | Euro GT Hockenheim | 8 | | Kurt Simonsen | Kurt Simonsen | 7th |
| 26.8.1973 | Euro GT Hockenheim | 9 | | Roland Larsson | Roland Larsson | DNA |
| 26.8.1973 | Euro GT Hockenheim | 14 | | William Vollery | Porsche Club Romand | 16th |
| 26.8.1973 | Euro GT Hockenheim | 15 | | Bernard Chenevière | Bernard Chenevière | DNA |
| 26.8.1973 | Euro GT Hockenheim | 17 | | Jan Lundgardh | Team Castrol | 12th |
| 26.8.1973 | DRM Hockenheim Preis der Nationen | 21 | #911 360 0885 | Clemens Schickentanz | Porsche Kremer Racing Team | 2nd |
| 26.8.1973 | Euro GT Hockenheim | 21 | #911 360 0885 | Clemens Schickentanz | Porsche Kremer Racing Team | 2nd |
| 26.8.1973 | Euro GT Hockenheim | 23 | #911 360 1329 | Reinhardt Stenzel | Reinhardt Stenzel | DNF |
| 26.8.1973 | DRM Hockenheim Preis der Nationen | 23 | #911 360 1329 | Reinhardt Stenzel | Reinhardt Stenzel | DNF |
| 26.8.1973 | DRM Hockenheim Preis der Nationen | 27 | #911 360 0847 | Georg Loos | Gelo Racing Team | DNF |
| 26.8.1973 | Euro GT Hockenheim | 27 | #911 360 0847 | Georg Loos | Gelo Racing Team | 11th |
| 26.8.1973 | DRM Hockenheim Preis der Nationen | 56 | | Josef Brambring | Porsche Kremer Racing Team | DNF |
| 26.8.1973 | Zandvoort [GT/T] | | | Nico Chiotakis | | 1st |
| 2.9.1973 | Knutstorp [T/GT+1.3] | 5 | | Jan Lundgardh | Team Castrol | 2nd |
| 2.9.1973 | 6 h Monza | 11 | #911 360 0885 | Schickentanz / Kremer / Keller | Porsche Kremer Racing | 1st |
| 2.9.1973 | 6 h Monza | 12 | | Keller / Schickentanz / Neuhaus | Porsche Kremer Racing | 2nd |
| 2.9.1973 | Knutstorp [S] | 13 | | Yngve Johansson | | 9th |
| 2.9.1973 | 6 h Monza | 22 | | Larsson / Simonsen | | raced |
| 2.9.1973 | 6 h Monza | 37 | | Zbinden / Vollery | Porsche Club Romand | 7th |
| 2.9.1973 | 6 h Monza | | | Rulon-Miller / Birrane | | raced |
| 2.9.1973 | 6 h Monza | | | Schön / Borri | | 4th |
| 8.9.1973 | Sweden Kinekulle | 4 | | Bengt Ekberg | Team Kubero Porsche Racing | 3rd |
| 8.9.1973 | Sweden Kinekulle | 12 | | Jan Lundgardh | Team Castrol | 4th |
| 8.9.1973 | Sweden Kinekulle | 18 | | Roland Larsson | Team Kubero Porsche Racing | 7th |
| 9.9.1973 | DRM Norisring | 4 | #911 360 0885 | Clemens Schickentanz | Porsche Kremer Racing Team | 2nd |
| 9.9.1973 | DRM Norisring | 6 | #911 360 0847 | Georg Loos | Gelo Racing Team | 4th |
| 9.9.1973 | DRM Norisring | 7 | #911 360 1329 | Reinhardt Stenzel | Auto Fox Racing | DNF |
| 9.9.1973 | NTK Woensdrecht | 81 | | Nico Chiotakis | Team 4711 Sir Irish Moss | 3rd |
| 9.9.1973 | Mainz-Finthen [GT] | 189 | #911 360 1183 | Hans-Peter Ziegler | Hanspeter Ziegler | 1st |
| 15.9.1973 | 100 mile Lime Rock 2 | 5 | #911 360 0940 | Peter Revson | Clarkson/Golding? | 6th |
| 15.9.1973 | 100 mile Lime Rock 1 | 5 | #911 360 0940 | Arnold Golding | Clarkson/Golding? | 33rd |
| 15.9.1973 | 100 mile Lime Rock 1 | 30 | #911 360 0557 | George Dyer | George Dyer | 12th |
| 15.9.1973 | 100 mile Lime Rock 2 | 30 | #911 360 0557 | George Dyer | George Dyer | 10th |
| 15.9.1973 | 100 mile Lime Rock 2 | 76 | #911 360 0785 | George Stone | Silverstone Racing Team | DNS |
| 15.9.1973 | 100 mile Lime Rock 1 | 76 | #911 360 0785 | George Stone | Silverstone Racing Team | 40th |
| 22.9.1973 | Tour de France | 103 | #911 360 0960 | Bayard / Ligonnet | | raced |