| Rank | Board name and description | Posts | Members |
|---|
| 1 | Club RSX
Honda RSX fans forums | 1058841235 | 99915 |
| 2 | VW vortex forums
Volkswagen and related car brands discussion boards | 44578214 | 392242 |
| 3 | Corvette Forum
Chevrolet corvette forum | 26881718 | 188091 |
| 4 | Forum Auto
Automotive discussion (in french) | 24412819 | 427603 |
| 5 | NASIOC Forums
Forums of the North American Subaru Impreza Owners Club | 21396674 | 170539 |
| 6 | Bimmerforums
BMW car brand message boards | 12617286 | 174594 |
| 7 | Houston imports
Houston import race scene forums | 8040489 | 38933 |
| 8 | Scoobynet
Subaru Impreza owners community | 7644356 | 81282 |
| 9 | Motor Forum
Dutch motors discussion forums | 6160039 | 50545 |
| 10 | Montreal racing
Car racing in Quebec (in french and english) message boards | 5205865 | 49769 |
| 11 | MTB news
German mountain bike discussion forums | 4662085 | 119020 |
| 12 | Boostcruising
Steet cruising and automotive forums | 4497878 | 72470 |
| 13 | RX-7 Club
Mazda RX-7 forums | 4415016 | 95073 |
| 14 | CamaroZ28.com
Chevrolet Camaro Z28 discussion forums | 4274298 | 77413 |
| 15 | Tampa Racing
Car racing community | 4003632 | 53343 |
| 16 | Third Gen
Chevrolet camaro owners forums | 3690682 | 80691 |
| 17 | Ferrari Chat
Ferrari fans and owners community | 3671569 | 56504 |
| 18 | New Celica
Toyota Celica discussion forums | 3592475 | 31948 |
| 19 | Race Sim Central
Car racing simulations discussion forums | 3590792 | 106585 |
| 20 | BARF
Bay Area Riders Forum | 3274696 | 22566 |
| 21 | Pelican Parts
Porsche and BMW message boards | 3255593 | 46386 |
| 22 | Speed TV
Motorsports message boards | 2527547 | 109643 |
| 23 | ATV Connection
ATV discussion forums | 2371815 | 85348 |
| 24 | Ten Tenths
Motorsports message board | 2179827 | 26678 |
| 25 | RC web
Racing car forums (in Thai) | 1981555 | 85391 |
| 26 | Zatzy
Swedish car forum | 1866121 | 19006 |
| 27 | REVscene.net
Vancouver and Pacific Northwest import modified car community | 1721316 | 17062 |
| 28 | Track Forum
Racing discussion board | 1716702 | 7795 |
| 29 | Ford power
Ford cars discussion forums | 1563623 | 10482 |
| 30 | Performance forums
Cars and motorbikes performance forums | 1561317 | 21051 |
| 31 | Racers Den
Car racing forums | 1477174 | 2114 |
| 32 | LS1
Chevrolet Camaro message boards | 1458170 | 41980 |
| 33 | Auto Racing
Brazilian car racing forums | 1308851 | 6529 |
| 34 | DSM Source
DSM enthusiast community | 1013095 | 26152 |
| 35 | Clio sport
Renault Clio owners forum | 991798 | 9933 |
| 36 | Acura-cl
Acura enthousiasts message boards | 871703 | 57390 |
| 37 | Piston heads
Automotive discussion forums | 864230 | 29300 |
| 38 | No Pistons
Mazda RX7 message board | 808611 | 29849 |
| 39 | Team BHP
Indian automotive forums | 787010 | 22098 |
| 40 | Focal jet
Ford Focus owners community | 772099 | 12221 |
| 41 | Down Force
Brazilian car racing forum | 723903 | 1658 |
| 42 | StreetRace.org
Estonian Streetracing forums | 665554 | 11216 |
| 43 | Columbus Racing
Car racing community | 644511 | 5041 |
| 44 | Velocidad Maxima
Car modifications forums (in spanish) | 607732 | 6442 |
| 45 | Texas Racing Scene
Texas automotive forums | 549357 | 4829 |
| 46 | StreetRace.co.uk
Car tuning and racing forum | 482687 | 8980 |
| 47 | Motorsport Forums - discontinued
Car racing and rallying discussion board | 8459 | 19829 |
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