| Rank | Board name and description | Posts last week | Posts | Members |
| 1 | Lay it low Lowriding fans message boards | 73543 | 10027959 | 57100 |
| 2 | S2KI Honda S2000 owners community | 43947 | 16713339 | 85710 |
| 3 | Boostcruising Steet cruising and automotive forums | 28750 | 7346629 | 109133 |
| 4 | Houston imports Houston import race scene forums | 22566 | 9920727 | 45502 |
| 5 | Elaborare Italian car and bike tuning community | 17684 | 13356486 | 66933 |
| 6 | Corsa Sport Vauxhall, Opel, and Holden message boards | 15777 | 6256997 | 31503 |
| 7 | NICO forums Nissan and Infiniti message boards | 14638 | 5212557 | 138767 |
| 8 | Beyond.ca Canadian car forums | 8449 | 3107935 | 67350 |
| 9 | TDI Club VW TDI engine message boards | 8253 | 2729451 | 71287 |
| 10 | MIGWeb Vauxhall - Opel message boards | 5679 | 3983669 | 48658 |
| 11 | Honda-Acura.net Honda cars message boards | 4626 | 3871956 | 104170 |
| 12 | V6 Performance Forum for owners of V6 powered cars | 3152 | 1516928 | 42346 |
| 13 | Automotive Forums Multi-brand automotive message boards | 2920 | 5613010 | 633596 |
| 14 | Car Forum Misfits Cars message board | 1863 | 772165 | 1024 |
| 15 | Super Honda Honda owners community | 1751 | 4039910 | 149528 |
| 16 | Nissan forums Nissan owners message board | 863 | 1212126 | 85511 |
| 17 | Car Styling Car modification enthusiasts community | 199 | 742586 | 19280 |