PORSCHE RACING HISTORYReinhold Jöst (D)
1973 : Interserie Nürburgring - 3rd overall : Spa 1000 km - 1st in class : Interserie Norisring - 3rd overall, 1st in class : Interserie Misano - 3rd : Kyalami 9 Hours - 1st overall
4 February 1973 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 908/03 | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I)/Paul Blancpain (USA) | Reinhold Jöst (D) | DNF | 47th | 244 laps - Gearbox |
25 March 1973 - Vallelunga 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 12 | Porsche 908/03 | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Reinhold Jöst (D) | 5th | 5th | 9th | 272 laps |
1 April 1973 - Interserie Nürburgring - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 908/03 | 908/03-008 | INT | Reinhold Jöst (D) | Reinhold Jöst (D) | 3rd | 3rd | 5th | 14 laps |
15 April 1973 - Dijon 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 908/03 | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Reinhold Jöst (D) | DNF | 10th | 131 laps - Engine |
25 April 1973 - Monza 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 12 | Porsche 908/03 | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Reinhold Jöst (D) | DNF | 11th | 1 lap - Engine |
6 May 1973 - Spa 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 40 | Porsche 911 Carrera RSR | 911 360 0576 R5 | GT | George Follmer (USA)/Reinhold Jöst (D) | Porsche Stuttgart (D) | 10th | 1st | 20th | 60 laps |
27 May 1973 - Nürburgring 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 10 | Porsche 908/03 | 908/03-008 | S3.0 | Reinhold Jöst (D)/Mario Casoni (I) | Reinhold Jöst (D) | DNS | Accident in Practice |
10 June 1973 - Le Mans 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 47 | Porsche 911 Carrera RSR | 911 360 0588 R6 | GT3.0 | Reinhold Jöst (D)/Claude Haldi (CH) | Martini Racing Team (D) | DNF | 19th | 65 laps - fuel System |
24 June 1973 - Interserie Norisring - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 908/03 | 908/03-008 | S3.0 | Reinhold Jöst (D) | Reinhold Jöst (D) | 3rd | 1st | 7th | 137 laps |
19 August 1973 - Interserie Misano - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 908/03 | 908/03-008 | Reinhold Jöst (D) | ATE (D) | 3rd | 5th | 78 laps |
3 November 1973 - Kyalami 9 Hours - South African Springbok Trophy Series
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 908/03 | 908/03-008 | Gr.5 | Reinhold Jöst (D)/Herbert Müller (CH) | R. Jost Racing (D) | 1st | 1st | 5th | 360 laps |