PORSCHE RACING HISTORYAdolf Vianden (D)
1953
26 April 1953 - Mille Miglia - World Sports Car Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 440 | Porsche 356 1300 | S2.0 | Adolf Vianden (D)/Walter Skersiesi (D) | 97th | 33rd | 14:32:57 |
30 August 1953 - Nürburgring 1000 km - World Sports Car Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 81 | Porsche 356 1100 | ser. S1.3 | Adolf Vianden (D)/Harry Merkel (D) | Adolf Vianden | DNF | Engine |