| 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 | Corvette Forum Chevrolet corvette forum | 31681218 | 229467 |
| 4 | NASIOC Forums Forums of the North American Subaru Impreza Owners Club | 27906918 | 220674 |
| 5 | Bimmerforums BMW car brand message boards | 17305075 | 245299 |
| 6 | Elaborare Italian car and bike tuning community | 13350174 | 66903 |
| 7 | E46 fanatics BMW 3-series owners community | 10676658 | 153091 |
| 8 | Lay it low Lowriding fans message boards | 9988356 | 57009 |
| 9 | SVT performance General Ford cars discussion forums | 8890326 | 96319 |
| 10 | Montreal racing Car racing in Quebec (in french and english) message boards | 6204710 | 57062 |
| 11 | Ford Trucks Ford trucks and vans forums | 5892067 | 461603 |
| 12 | Tampa Racing Car racing community | 5384619 | 73377 |
| 13 | Maxima.org Nissan maxima fanatics forums | 4973706 | 81360 |
| 14 | CamaroZ28.com Chevrolet Camaro Z28 discussion forums | 4945781 | 85604 |
| 15 | Corral.net Ford mustang message boards | 4809061 | 105826 |
| 16 | my.IS Lexus IS 300 message boards | 4589034 | 74910 |
| 17 | RX-7 Club Mazda RX-7 forums | 4415016 | 95073 |
| 18 | M3 Forum BMW M3 owners community | 4317758 | 112167 |
| 19 | Third Gen Chevrolet camaro owners forums | 4270844 | 108595 |
| 20 | Jeepsunlimited.com Forums Discussion and marketplace about Jeeps | 4106931 | 103119 |
| 21 | 3.8 mustang Ford mustang owners community | 4053780 | 23051 |
| 22 | MB world Mercedes-Benz owners message boards | 3977436 | 128865 |
| 23 | New Celica Toyota Celica discussion forums | 3592475 | 31948 |
| 24 | BMW Club BMW owners community (in Russian) | 3342278 | 28865 |
| 25 | Pelican Parts Porsche and BMW message boards | 3255593 | 46386 |
| 26 | Skylines Australia Australian automotive forum | 3250547 | 33042 |
| 27 | Corsa-C UK Vauxhall Corsa C sports club | 3062415 | 20225 |
| 28 | BMW Passion Italian BMW cars community | 2954618 | 22691 |
| 29 | Turbo Bricks Car performance forums | 2705449 | 29420 |
| 30 | BMW-Treff BMW owners community | 2594108 | 67958 |
| 31 | Modded Mustangs Ford Mustang tuning forums | 2410287 | 29796 |
| 32 | B15 Sentra Nissan Sentra owners forums | 2369996 | 26301 |
| 33 | RC web Racing car forums (in Thai) | 2158030 | 94117 |
| 34 | LS1 Chevrolet Camaro message boards | 2124323 | 47219 |
| 35 | DSM tuners Eagle / DSM cars tuning forums | 2015216 | 85733 |
| 36 | Mercedes Shop Mercedes owners community | 1961753 | 39955 |
| 37 | REVscene.net Vancouver and Pacific Northwest import modified car community | 1721316 | 17062 |
| 38 | Prelude online Honda prelude owners community | 1671099 | 62658 |
| 39 | Club Lexus Lexus cars discussion forums | 1597444 | 46427 |
| 40 | DTM Power BMW tuning forums | 1578729 | 68549 |
| 41 | Ford power Ford cars discussion forums | 1564024 | 10887 |
| 42 | Racers Den Car racing forums | 1555097 | 2495 |
| 43 | Team BHP Indian automotive forums | 1518006 | 55384 |
| 44 | Fiesta Turbo Ford Fiesta tuning message boards | 1370289 | 10631 |
| 45 | Max Bimmer BMW owners community | 1298114 | 16476 |
| 46 | Skyline Owners Nissan Skyline owners forum | 1225320 | 22103 |
| 47 | Autopia Car Detailing Forum | 1199900 | 61215 |
| 48 | Tuning.pl Car tuning forum (in polish) | 1154240 | 9643 |
| 49 | Auto Extreme Car discussion board (in German) | 1108403 | 96999 |
| 50 | Car Audio Australia Australian car audio forum | 1096378 | 26608 |
| 51 | DSM talk Diamond star motors forums | 1040034 | 21582 |
| 52 | Barry Boys Old cars pictures forum | 916740 | 18350 |
| 53 | Maxrev Honda message boards | 905412 | 21457 |
| 54 | Down Force Brazilian car racing forum | 892535 | 2566 |
| 55 | Pagenstecher Tuning and performance forums (in German) | 869091 | 27692 |
| 56 | No Pistons Mazda RX7 message board | 810159 | 30127 |
| 57 | Mopar Chat Car tuning and performance forums | 746324 | 49530 |
| 58 | Car Styling Car modification enthusiasts community | 742506 | 19267 |
| 59 | Golf4.de VW Golf 4 forum (in German) | 722228 | 14807 |
| 60 | Carros de Rua Brazilian Car Sound & Tuning forum | 708534 | 22517 |
| 61 | StreetRace.org Estonian Streetracing forums | 665554 | 11216 |
| 62 | StreetRace.co.uk Car tuning and racing forum | 661384 | 12526 |
| 63 | Velocidad Maxima Car modifications forums (in spanish) | 607732 | 6442 |
| 64 | Texas Racing Scene Texas automotive forums | 549357 | 4829 |