| Rank | Board name and description | Posts last week | Posts | Members |
| 1 | Club RSX Honda RSX fans forums | 170612 | 29860267 | 122569 |
| 2 | VW vortex forums Volkswagen and related car brands discussion boards | 143972 | 57114749 | 492684 |
| 3 | NASIOC Forums Forums of the North American Subaru Impreza Owners Club | 78535 | 27734523 | 219450 |
| 4 | Corvette Forum Chevrolet corvette forum | 70196 | 31577610 | 228807 |
| 5 | Bimmerforums BMW car brand message boards | 56347 | 17204298 | 243534 |
| 6 | Boostcruising Steet cruising and automotive forums | 30913 | 7285073 | 108453 |
| 7 | MTB news German mountain bike discussion forums | 24401 | 6364903 | 164904 |
| 8 | Houston imports Houston import race scene forums | 22427 | 9873896 | 45364 |
| 9 | Ferrari Chat Ferrari fans and owners community | 18910 | 5061450 | 71671 |
| 10 | Tampa Racing Car racing community | 15852 | 5358096 | 72035 |
| 11 | Scoobynet Subaru Impreza owners community | 12584 | 8757337 | 105953 |
| 12 | Team BHP Indian automotive forums | 11387 | 1497897 | 55239 |
| 13 | LS1 Chevrolet Camaro message boards | 11005 | 2107692 | 46983 |
| 14 | CamaroZ28.com Chevrolet Camaro Z28 discussion forums | 7203 | 4934214 | 85468 |
| 15 | Third Gen Chevrolet camaro owners forums | 6864 | 4260808 | 108065 |
| 16 | Performance forums Cars and motorbikes performance forums | 6265 | 2009585 | 35292 |
| 17 | Track Forum Racing discussion board | 4981 | 2141179 | 9268 |
| 18 | Columbus Racing Car racing community | 4691 | 1060602 | 6248 |
| 19 | Ten Tenths Motorsports message board | 4687 | 2546130 | 30095 |
| 20 | Down Force Brazilian car racing forum | 1885 | 889330 | 2562 |
| 21 | Race Sim Central Car racing simulations discussion forums | 1599 | 3810394 | 127334 |
| 22 | StreetRace.co.uk Car tuning and racing forum | 1093 | 658862 | 12483 |
| 23 | Racers Den Car racing forums | 227 | 1554621 | 2480 |
| 24 | DSM Source DSM enthusiast community | 169 | 1038987 | 28851 |
| 25 | Ford power Ford cars discussion forums | 1 | 1564017 | 10882 |
| 26 | New England Street Riders Motorcycles forum | -1404 | 722073 | 3750 |