PORSCHE RACING HISTORYSiegfried Brunn (D)
1981 : Silverstone 6 Hours - 3rd overall, 1st in class : Nürburgring 1000 Km - 3rd in class : Kyalami 9 Hours - 2nd overall
1 February 1981 - Daytona 24 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 01 | Porsche 911 Carrera RSR | 911 360 0601 | GTO | Siegfried Brunn (D)/Robert Kirby (USA)/John Hotchkis (USA) | Kirby-Hitchcock Racing | 32nd | 10th | 57th | 361 laps - DNF |
10 May 1981 - Silverstone 6 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 908/03 Turbo | 908/03-013 | S+2.0 | Siegfried Brunn (D)/Eddie Jordan (IRL) | Siegfried Brunn (D) | 3rd | 1st | 5th | 204 laps |
24 May 1981 - Nürburgring 1000 Km - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 3 | Porsche 908/80 Turbo | 908/03-013 | S+2.0 | Siegfried Brunn (D)/Herbert Müller (CH) | Siegfried Brunn (D) | 38th | 3rd | 9th | 13 laps - Fatal Accident |
6 November 1981 - Kyalami 9 Hours - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 2 | Porsche 908/03 Turbo | 908/03-008 | Cat.1 | Jürgen Barth (D)/Siegfried Brunn (D)/Jean-Michel Martin (B) | P.G. Glass (D) | 2nd | 2nd | 4th | 349 laps |