| Rank | Board name and description | Posts | Members |
| 1 | NASIOC Forums Forums of the North American Subaru Impreza Owners Club | 27734523 | 219450 |
| 2 | Scoobynet Subaru Impreza owners community | 8757337 | 105953 |
| 3 | I-Club Subaru owners community | 2745126 | 37089 |
| 4 | IWSTI Subaru Impreza STI owners community | 2652401 | 50504 |
| 5 | Club WRX Subaru Impreza owners community | 2249922 | 60097 |
| 6 | WebClub Subaru Subaru owners community (in french) | 1580190 | 10501 |
| 7 | Ultimate Subaru Subaru message board | 842663 | 27810 |