| Rank | Board name and description | Posts | Members |
| 1 | VW vortex forums Volkswagen and related car brands discussion boards | 60695474 | 526883 |
| 2 | Corvette Forum Chevrolet corvette forum | 42522159 | 328395 |
| 3 | NASIOC Forums Forums of the North American Subaru Impreza Owners Club | 38815270 | 347421 |
| 4 | Honda tech Honda cars enthusiasts forums | 34644340 | 297178 |
| 5 | Bimmerforums BMW car brand message boards | 24888589 | 556252 |
| 6 | E46 fanatics BMW 3-series owners community | 17789860 | 278423 |
| 7 | Elaborare Italian car and bike tuning community | 14595241 | 78893 |
| 8 | Lay it low Lowriding fans message boards | 14184611 | 71887 |
| 9 | SVT performance General Ford cars discussion forums | 12928778 | 144064 |
| 10 | Montreal racing Car racing in Quebec (in french and english) message boards | 6941539 | 64633 |
| 11 | M3 Forum BMW M3 owners community | 6620751 | 160636 |
| 12 | Tampa Racing Car racing community | 6243052 | 88607 |
| 13 | Ford Trucks Ford trucks and vans forums | 5892067 | 461603 |
| 14 | Third Gen Chevrolet camaro owners forums | 5479153 | 172636 |
| 15 | MB world Mercedes-Benz owners message boards | 5371157 | 235900 |
| 16 | Modded Mustangs Ford Mustang tuning forums | 5263642 | 62378 |
| 17 | my.IS Lexus IS 300 message boards | 5236201 | 103711 |
| 18 | CamaroZ28.com Chevrolet Camaro Z28 discussion forums | 4982373 | 85986 |
| 19 | Maxima.org Nissan maxima fanatics forums | 4973706 | 81360 |
| 20 | Corral.net Ford mustang message boards | 4809061 | 105826 |
| 21 | BMW Passion Italian BMW cars community | 4547968 | 35443 |
| 22 | Turbo Bricks Car performance forums | 4474781 | 43445 |
| 23 | RX-7 Club Mazda RX-7 forums | 4415016 | 95073 |
| 24 | Jeepsunlimited.com Forums Discussion and marketplace about Jeeps | 4330785 | 121437 |
| 25 | 3.8 mustang Ford mustang owners community | 4297986 | 24843 |
| 26 | New Celica Toyota Celica discussion forums | 3592475 | 31948 |
| 27 | BMW Club BMW owners community (in Russian) | 3342278 | 28865 |
| 28 | Pelican Parts Porsche and BMW message boards | 3255593 | 46386 |
| 29 | Skylines Australia Australian automotive forum | 3250547 | 33042 |
| 30 | Corsa-C UK Vauxhall Corsa C sports club | 3062415 | 20225 |
| 31 | Team BHP Indian automotive forums | 2982792 | 77647 |
| 32 | Maxrev Honda message boards | 2907554 | 40110 |
| 33 | LS1 Chevrolet Camaro message boards | 2646111 | 51849 |
| 34 | BMW-Treff BMW owners community | 2610340 | 68320 |
| 35 | B15 Sentra Nissan Sentra owners forums | 2490360 | 33661 |
| 36 | RC web Racing car forums (in Thai) | 2158030 | 94117 |
| 37 | DSM tuners Eagle / DSM cars tuning forums | 2015216 | 85733 |
| 38 | Mercedes Shop Mercedes owners community | 1961753 | 39955 |
| 39 | Skyline Owners Nissan Skyline owners forum | 1892506 | 44355 |
| 40 | REVscene.net Vancouver and Pacific Northwest import modified car community | 1721316 | 17062 |
| 41 | Prelude online Honda prelude owners community | 1671099 | 62658 |
| 42 | Club Lexus Lexus cars discussion forums | 1597444 | 46427 |
| 43 | DTM Power BMW tuning forums | 1578729 | 68549 |
| 44 | Ford power Ford cars discussion forums | 1564265 | 11327 |
| 45 | Max Bimmer BMW owners community | 1526882 | 25315 |
| 46 | Fiesta Turbo Ford Fiesta tuning message boards | 1370289 | 10631 |
| 47 | Autopia Car Detailing Forum | 1247485 | 64924 |
| 48 | Tuning.pl Car tuning forum (in polish) | 1154240 | 9643 |
| 49 | Car Audio Australia Australian car audio forum | 1130067 | 27639 |
| 50 | Auto Extreme Car discussion board (in German) | 1108403 | 96999 |
| 51 | Down Force Brazilian car racing forum | 1046349 | 62122 |
| 52 | DSM talk Diamond star motors forums | 1040034 | 21582 |
| 53 | Barry Boys Old cars pictures forum | 1037945 | 20605 |
| 54 | Pagenstecher Tuning and performance forums (in German) | 869091 | 27692 |
| 55 | StreetRace.co.uk Car tuning and racing forum | 810267 | 16414 |
| 56 | No Pistons Mazda RX7 message board | 810159 | 30127 |
| 57 | Mopar Chat Car tuning and performance forums | 788942 | 58803 |
| 58 | Car Styling Car modification enthusiasts community | 752398 | 22277 |
| 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 | Velocidad Maxima Car modifications forums (in spanish) | 607732 | 6442 |
| 63 | Texas Racing Scene Texas automotive forums | 549357 | 4829 |
| 64 | Racers Den Car racing forums | 66563 | 696 |