| Rank | Board name and description | Posts | Members |
|---|
| 1 | VW vortex forums
Volkswagen and related car brands discussion boards | 57365935 | 494943 |
| 2 | Honda tech
Honda cars enthusiasts forums | 34644340 | 297178 |
| 3 | NASIOC Forums
Forums of the North American Subaru Impreza Owners Club | 27906918 | 220674 |
| 4 | Bimmerforums
BMW car brand message boards | 17305075 | 245299 |
| 5 | E46 fanatics
BMW 3-series owners community | 10676658 | 153091 |
| 6 | Houston imports
Houston import race scene forums | 9913137 | 45481 |
| 7 | Pirate 4x4
4x4 message boards | 9170578 | 146554 |
| 8 | Montreal racing
Car racing in Quebec (in french and english) message boards | 6204710 | 57062 |
| 9 | Mustang world
Ford Mustang fanatics message boards | 5677333 | 48152 |
| 10 | VA Driven
Virginia automotive ethusiast forum | 5657868 | 42624 |
| 11 | Tampa Racing
Car racing community | 5384619 | 73377 |
| 12 | 3SI
Mitsubishi 3000GT/Stealth forums | 5116657 | 30535 |
| 13 | DFWstangs
Ford Mustand discussion forums | 5107766 | 36812 |
| 14 | Maxima.org
Nissan maxima fanatics forums | 4973706 | 81360 |
| 15 | SXOC
Nissan 200SX owners club forums | 4903394 | 22273 |
| 16 | Bimmerfest
BMW owners community | 4570495 | 173942 |
| 17 | Jeepsunlimited.com Forums
Discussion and marketplace about Jeeps | 4106931 | 103119 |
| 18 | 3.8 mustang
Ford mustang owners community | 4053780 | 23051 |
| 19 | Super Honda
Honda owners community | 4039419 | 149498 |
| 20 | MIGWeb
Vauxhall - Opel message boards | 3981244 | 48601 |
| 21 | Honda-Acura.net
Honda cars message boards | 3870435 | 104141 |
| 22 | BARF
Bay Area Riders Forum | 3274696 | 22566 |
| 23 | TDI Club
VW TDI engine message boards | 2726256 | 71153 |
| 24 | SG House
Singapore property and rental forum | 2718547 | 32610 |
| 25 | Club WRX
Subaru Impreza owners community | 2249922 | 60097 |
| 26 | Great Lakes 4x4
4x4 message board | 1870568 | 12835 |
| 27 | DTM Power
BMW tuning forums | 1578729 | 68549 |
| 28 | Acura world
Honda Acura forums | 1507032 | 44061 |
| 29 | Honda Society
Honda owners community | 1463519 | 13962 |
| 30 | Club Grand Prix
Pontiac grand prix discussion forums | 1384425 | 14900 |
| 31 | Fiesta Turbo
Ford Fiesta tuning message boards | 1370289 | 10631 |
| 32 | Forums Hawaii
Hawaiian automotive community | 1020978 | 28168 |
| 33 | Club GTI
GTI cars discussion forum | 952547 | 9878 |
| 34 | SLUniverse
Second Life forums | 814417 | 8735 |
| 35 | Airstream Forums
Airstream caravane owners community | 753598 | 37837 |
| 36 | Lille Hardware
Computer hardware community | 750996 | 5080 |
| 37 | ClemsonTalk
Clemson University forums | 704388 | 2969 |
| 38 |
Cars message board | 253825 | 1011 |
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