PORSCHE RACING HISTORY1973 - European GT Championship Estoril
8 July 1973 - Estoril, Portugal
Paul Keller wins in a Porsche 911 Carrera RSR
Overall - 1st, 2nd, 3rd : GT3.0 - 1st, 2nd, 3rd : GT2.0 - 1st
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 911 Carrera RSR | 911 360 0610 | GT3.0 | Paul Keller (CH) | Porsche Kremer Racing (D) | 1st | 1st | 1st | 80 laps |
| 4 | Porsche 911 Carrera RSR | 911 360 0885 | GT3.0 | Clemens Schickentanz (D) | Porsche Kremer Racing (D) | 2nd | 2nd | 2nd | 80 laps |
| 5 | Porsche 911 Carrera RSR | 911 360 0659 | GT3.0 | Claude Haldi (CH) | Porsche Club Romand (CH) | 3rd | 3rd | 4th | 80 laps |
| 3 | Porsche 911 Carrera RSR | 911 360 0643 | GT3.0 | Claude Ballot-Léna (F) | Sonauto (F) | 4th | 4th | 3rd | 79 laps |
| 18 | Porsche 911 Carrera RSR | 911 360 1045 | GT3.0 | Kurt Simonsen (S) | Team Kubero (S) | 5th | 5th | 7th | 78 laps |
| 7 | Porsche 911 Carrera RSR | 911 360 1134 | GT3.0 | Helmut Henzler (D) | 6th | 6th | 5th | 78 laps | |
| 19 | Porsche 911 Carrera RSR | 911 360 0185 | GT3.0 | Martin Birrane (IRL) | Crowne Racing Ltd. (GB) | 7th | 7th | 6th | 78 laps |
| 17 | Porsche 911 Carrera RS | GT3.0 | Roland Larsson (S) | Team Kubero (S) | 8th | 8th | 10th | 74 laps | |
| 9 | Porsche 911 Carrera RS | GT3.0 | John Rulon-Miller (USA) | MHSCC | 9th | 9th | 9th | 73 laps | |
| 22 | Porsche 911 T | GT2.0 | Horst Klauke (D) | Team Sixtant (D) | 10th | 1st | 11th | 72 laps | |
| 15 | Porsche 911 Carrera RS | GT3.0 | Serge Bolomey (CH) | 11th | 10th | 12th | 70 laps | ||
| 12 | Porsche 911 Carrera RSR | 911 360 1088 | GT3.0 | Charles Geeraerts (B) | Royal Air Maroc | DNF | 46 laps - Engine |
European Championship for Grand Touring Cars
Previous 1973 - Can-Am Road Atlanta Next 1973 - DRM Diepholz