| Rank | Board name and description | Posts last week | Posts | Members |
| 1 | S2KI Honda S2000 owners community | 47702 | 16619958 | 85282 |
| 2 | Boostcruising Steet cruising and automotive forums | 30913 | 7285073 | 108453 |
| 3 | Houston imports Houston import race scene forums | 22427 | 9873896 | 45364 |
| 4 | Elaborare Italian car and bike tuning community | 20720 | 13317818 | 66668 |
| 5 | NICO forums Nissan and Infiniti message boards | 14440 | 5181782 | 137693 |
| 6 | Corsa Sport Vauxhall, Opel, and Holden message boards | 14405 | 6225266 | 31378 |
| 7 | Beyond.ca Canadian car forums | 8563 | 3089835 | 66626 |
| 8 | TDI Club VW TDI engine message boards | 8214 | 2711522 | 70615 |
| 9 | MIGWeb Vauxhall - Opel message boards | 6051 | 3971626 | 48416 |
| 10 | Honda-Acura.net Honda cars message boards | 5085 | 3863035 | 104020 |
| 11 | Automotive Forums Multi-brand automotive message boards | 3219 | 5606565 | 632317 |
| 12 | Super Honda Honda owners community | 2951 | 4035867 | 149310 |
| 13 | Car Forum Misfits Cars message board | 1826 | 768654 | 1007 |
| 14 | Nissan forums Nissan owners message board | 936 | 1210208 | 85156 |
| 15 | Car Styling Car modification enthusiasts community | 292 | 742135 | 19217 |
| 16 | V6 Performance Forum for owners of V6 powered cars | -73 | 1510758 | 41798 |
| 17 | Lay it low Lowriding fans message boards | -27241 | 9945579 | 56566 |