PORSCHE RACING HISTORYChassis No. 906-155
19 June 1966 - Le Mans 24 Hours - World Sports Car Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 33 | Porsche 906 | 906-155 | S2.0 | Peter Gregg (USA)/Sten Axelsson (S) | Porsche System Engineering (D) | DNF | 30th | 321 laps - Engine |
25 April 1967 - Monza 1000 km - International Manufacturers Championship : Prototypes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 44 | Porsche 906 | 906-155 | S2.0 | Gerhard Koch (D)/Rolf Stommelen (D) | Gerhard Koch (D) | DNF | 14th | Tappet |
15 June 1975 - Interserie Mainz-Finthen - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 55 | Porsche 906 | 906-155 | Div.II | Karl-Adolf Kneip (D) | Karl-Adolf Kneip (D) | DNF |
17 August 1975 - Interserie Kassel-Calden - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| Porsche 906 | 906-155 | Div.II | Karl-Adolf Kneip (D) | DNS |
24 August 1975 - Interserie Zandvoort - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 47 | Porsche 906 Spyder | 906-155 | Div.II | Karl-Adolf Kneip (D) | K.-Adolf Kneip (D) | 18th | DNF |
29 August 1976 - Interserie Hockenheim Preis der Nationen - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 15 | Porsche 906 Spyder | 906-155 | Div.I | Karl-Adolf Kneip (D) | Karl-Adolf Kneip (D) | 20th | 10th |
10 October 1976 - Interserie Nürburgring - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 11 | Porsche 906 Spyder | 906-155 | Div.I | Karl-Adolf Kneip (D) | Karl-Adolf Kneip (D) | 10th | 4th | 61 laps |
24 October 1976 - Interserie Mainz-Finthen - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| Porsche 906 Spyder | 906-155 | Div.I | Karl-Adolf Kneip (D) | Karl-Adolf Kneip (D) |
31 October 1976 - Interserie Hockenheim Südwestpokal - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 11 | Porsche 906 Spyder | 906-155 | Div.I | Karl-Adolf Kneip (D) | Karl-Adolf Kneip (D) | 15th | 8th |