| Rank | Board name and description | Posts | Members |
|---|
| 1 | VW vortex forums
Volkswagen and related car brands discussion boards | 60695474 | 526883 |
| 2 | Bimmerforums
BMW car brand message boards | 23313585 | 398128 |
| 3 | NASIOC Forums
Forums of the North American Subaru Impreza Owners Club | 36171198 | 311348 |
| 4 | Honda tech
Honda cars enthusiasts forums | 34644340 | 297178 |
| 5 | Bimmerfest
BMW owners community | 6717885 | 280873 |
| 6 | Pirate 4x4
4x4 message boards | 12529902 | 219389 |
| 7 | E46 fanatics
BMW 3-series owners community | 14160773 | 213349 |
| 8 | Super Honda
Honda owners community | 4132813 | 157626 |
| 9 | Jeepsunlimited.com Forums
Discussion and marketplace about Jeeps | 4311413 | 116381 |
| 10 | Honda-Acura.net
Honda cars message boards | 4095587 | 107575 |
| 11 | TDI Club
VW TDI engine message boards | 3747001 | 99409 |
| 12 | Tampa Racing
Car racing community | 6243052 | 88607 |
| 13 | Maxima.org
Nissan maxima fanatics forums | 4973706 | 81360 |
| 14 | Club WRX
Subaru Impreza owners community | 2392001 | 73838 |
| 15 | DTM Power
BMW tuning forums | 1578729 | 68549 |
| 16 | Montreal racing
Car racing in Quebec (in french and english) message boards | 6941539 | 64633 |
| 17 | Houston imports
Houston import race scene forums | 11534632 | 57635 |
| 18 | Acura world
Honda Acura forums | 1632714 | 55545 |
| 19 | MIGWeb
Vauxhall - Opel message boards | 4090309 | 51124 |
| 20 | Mustang world
Ford Mustang fanatics message boards | 4930957 | 48573 |
| 21 | SG House
Singapore property and rental forum | 6326536 | 45410 |
| 22 | VA Driven
Virginia automotive ethusiast forum | 5988663 | 45167 |
| 23 | 3SI
Mitsubishi 3000GT/Stealth forums | 5826648 | 41227 |
| 24 | Airstream Forums
Airstream caravane owners community | 758903 | 38126 |
| 25 | Forums Hawaii
Hawaiian automotive community | 324678 | 35293 |
| 26 | DFWstangs
Ford Mustand discussion forums | 5463504 | 28488 |
| 27 | 3.8 mustang
Ford mustang owners community | 4297986 | 24843 |
| 28 | SLUniverse
Second Life forums | 1545508 | 24795 |
| 29 | Tenerife Forum
Tenerife message board | 577789 | 24310 |
| 30 | BARF
Bay Area Riders Forum | 3274696 | 22566 |
| 31 | Great Lakes 4x4
4x4 message board | 2914544 | 21661 |
| 32 | Honda Society
Honda owners community | 1799854 | 19921 |
| 33 | SXOC
Nissan 200SX owners club forums | 5954306 | 18755 |
| 34 | Club Grand Prix
Pontiac grand prix discussion forums | 1384425 | 14900 |
| 35 | Fiesta Turbo
Ford Fiesta tuning message boards | 1370289 | 10631 |
| 36 | Club GTI
GTI cars discussion forum | 952547 | 9878 |
| 37 | Lille Hardware
Computer hardware community | 750996 | 5080 |
| 38 | ClemsonTalk
Clemson University forums | 715626 | 3324 |
| 39 |
Cars message board | 366220 | 1860 |
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