| Rank | Board name and description | Posts last week | Posts | Members |
| 1 | NASIOC Forums Forums of the North American Subaru Impreza Owners Club | 54397 | 35293395 | 299599 |
| 2 | Bimmerforums BMW car brand message boards | 47789 | 22627365 | 376255 |
| 3 | Pirate 4x4 4x4 message boards | 27489 | 12159947 | 210851 |
| 4 | E46 fanatics BMW 3-series owners community | 23777 | 13798583 | 205015 |
| 5 | SG House Singapore property and rental forum | 22287 | 5857294 | 42750 |
| 6 | Bimmerfest BMW owners community | 15921 | 6480208 | 267630 |
| 7 | Houston imports Houston import race scene forums | 10977 | 11383230 | 56500 |
| 8 | Great Lakes 4x4 4x4 message board | 8661 | 2809798 | 20758 |
| 9 | TDI Club VW TDI engine message boards | 7469 | 3632778 | 93562 |
| 10 | SLUniverse Second Life forums | 4975 | 1471409 | 23169 |
| 11 | Mustang world Ford Mustang fanatics message boards | 4506 | 5808440 | 70773 |
| 12 | 3SI Mitsubishi 3000GT/Stealth forums | 3914 | 5766595 | 40049 |
| 13 | SXOC Nissan 200SX owners club forums | 1994 | 5954306 | 18755 |
| 14 | Honda Society Honda owners community | 1917 | 1762581 | 19745 |
| 15 | Jeepsunlimited.com Forums Discussion and marketplace about Jeeps | 784 | 4301674 | 114670 |
| 16 | Super Honda Honda owners community | 245 | 4127723 | 156851 |
| 17 | Acura world Honda Acura forums | 193 | 1630108 | 54822 |
| 18 | ClemsonTalk Clemson University forums | 131 | 714858 | 3288 |
| 19 | DFWstangs Ford Mustand discussion forums | 14 | 5463626 | 28211 |