| Rank | Board name and description | Posts | Members |
| 1 | VW vortex forums Volkswagen and related car brands discussion boards | 44578214 | 392242 |
| 2 | Honda tech Honda cars enthusiasts forums | 32305576 | 288318 |
| 3 | Corvette Forum Chevrolet corvette forum | 26881718 | 188091 |
| 4 | NASIOC Forums Forums of the North American Subaru Impreza Owners Club | 21396674 | 170539 |
| 5 | Bimmerforums BMW car brand message boards | 12617286 | 174594 |
| 6 | Elaborare Italian car and bike tuning community | 11503056 | 57000 |
| 7 | E46 fanatics BMW 3-series owners community | 7710747 | 118918 |
| 8 | SVT performance General Ford cars discussion forums | 6490659 | 72582 |
| 9 | Lay it low Lowriding fans message boards | 6011517 | 39031 |
| 10 | Jeepsunlimited.com Forums Discussion and marketplace about Jeeps | 5959772 | 94168 |
| 11 | Ford Trucks Ford trucks and vans forums | 5892067 | 461603 |
| 12 | Montreal racing Car racing in Quebec (in french and english) message boards | 5205865 | 49769 |
| 13 | Maxima.org Nissan maxima fanatics forums | 4973706 | 81360 |
| 14 | Corral.net Ford mustang message boards | 4809061 | 105826 |
| 15 | RX-7 Club Mazda RX-7 forums | 4415016 | 95073 |
| 16 | CamaroZ28.com Chevrolet Camaro Z28 discussion forums | 4274298 | 77413 |
| 17 | Tampa Racing Car racing community | 4003632 | 53343 |
| 18 | my.IS Lexus IS 300 message boards | 3946619 | 56872 |
| 19 | Third Gen Chevrolet camaro owners forums | 3690682 | 80691 |
| 20 | New Celica Toyota Celica discussion forums | 3592475 | 31948 |
| 21 | 3.8 mustang Ford mustang owners community | 3368446 | 19785 |
| 22 | BMW Club BMW owners community (in Russian) | 3342278 | 28865 |
| 23 | Pelican Parts Porsche and BMW message boards | 3255593 | 46386 |
| 24 | Skylines Australia Australian automotive forum | 3250547 | 33042 |
| 25 | MB world Mercedes-Benz owners message boards | 3032999 | 83756 |
| 26 | M3 Forum BMW M3 owners community | 2974330 | 88323 |
| 27 | Corsa-C UK Vauxhall Corsa C sports club | 2321222 | 14837 |
| 28 | BMW-Treff BMW owners community | 2281631 | 60492 |
| 29 | B15 Sentra Nissan Sentra owners forums | 2175335 | 22305 |
| 30 | DSM tuners Eagle / DSM cars tuning forums | 2015216 | 85733 |
| 31 | RC web Racing car forums (in Thai) | 1981555 | 85391 |
| 32 | Turbo Bricks Car performance forums | 1728207 | 22647 |
| 33 | REVscene.net Vancouver and Pacific Northwest import modified car community | 1721316 | 17062 |
| 34 | Mercedes Shop Mercedes owners community | 1679351 | 34481 |
| 35 | Prelude online Honda prelude owners community | 1671099 | 62658 |
| 36 | Club Lexus Lexus cars discussion forums | 1597444 | 46427 |
| 37 | DTM Power BMW tuning forums | 1578729 | 68549 |
| 38 | Ford power Ford cars discussion forums | 1563623 | 10482 |
| 39 | BMW Passion Italian BMW cars community | 1506709 | 11193 |
| 40 | Racers Den Car racing forums | 1477174 | 2114 |
| 41 | LS1 Chevrolet Camaro message boards | 1458170 | 41980 |
| 42 | Fiesta Turbo Ford Fiesta tuning message boards | 1370289 | 10631 |
| 43 | Tuning.pl Car tuning forum (in polish) | 1154240 | 9643 |
| 44 | Modded Mustangs Ford Mustang tuning forums | 1129380 | 17294 |
| 45 | Auto Extreme Car discussion board (in German) | 1108403 | 96999 |
| 46 | Max Bimmer BMW owners community | 1106752 | 13378 |
| 47 | DSM talk Diamond star motors forums | 1040034 | 21582 |
| 48 | Autopia Car Detailing Forum | 996678 | 48660 |
| 49 | Car Audio Australia Australian car audio forum | 891226 | 19235 |
| 50 | Pagenstecher Tuning and performance forums (in German) | 869091 | 27692 |
| 51 | No Pistons Mazda RX7 message board | 808611 | 29849 |
| 52 | Team BHP Indian automotive forums | 787010 | 22098 |
| 53 | Barry Boys Old cars pictures forum | 745377 | 15514 |
| 54 | Down Force Brazilian car racing forum | 723903 | 1658 |
| 55 | Car Styling Car modification enthusiasts community | 716049 | 17085 |
| 56 | Mopar Chat Car tuning and performance forums | 696802 | 43881 |
| 57 | Maxrev Honda message boards | 683911 | 19097 |
| 58 | Carros de Rua Brazilian Car Sound & Tuning forum | 682182 | 22090 |
| 59 | StreetRace.org Estonian Streetracing forums | 665554 | 11216 |
| 60 | Velocidad Maxima Car modifications forums (in spanish) | 607732 | 6442 |
| 61 | Texas Racing Scene Texas automotive forums | 549357 | 4829 |
| 62 | StreetRace.co.uk Car tuning and racing forum | 482687 | 8980 |