| Rank | Board name and description | Online users (average) | Posts | Members |
|---|
| 1 | Bimmerforums
BMW car brand message boards | 1094 | 23313585 | 398128 |
| 2 | TDI Club
VW TDI engine message boards | 379 | 3747001 | 99409 |
| 3 | M3 Forum
BMW M3 owners community | 276 | 6016571 | 149843 |
| 4 | I-Club
Subaru owners community | 12 | 3234230 | 44386 |
| 5 | Mopar Chat
Car tuning and performance forums | 10 | 783170 | 54733 |
| 6 | Honda-Acura.net
Honda cars message boards | 1 | 4095587 | 107575 |
| 7 | Club Grand Prix
Pontiac grand prix discussion forums | 1 | 1384425 | 14900 |
| 8 | Probe Talk
Ford Probe owners forums | 1 | 4616885 | 30756 |
| 9 | Forum Auto
Automotive discussion (in french) | 1 | 24412819 | 427603 |
| 10 | UBRF.org
Western New York Automotive Forum | 1 | 1162012 | 8093 |
| 11 | Zatzy
Swedish car forum | 1 | 1866121 | 19006 |
| 12 | EvolutionM
Mitsubishi Lancer enthusiasts Community | 1 | 10041258 | 160676 |
| 13 | Mercedes Shop
Mercedes owners community | 1 | 1961753 | 39955 |
| 14 | NICO forums
Nissan and Infiniti message boards | 1 | 5525619 | 148980 |
| 15 | No Pistons
Mazda RX7 message board | 1 | 810159 | 30127 |
| 16 | Michigan Jeepers - discontinued
Michigan Jeeps owners community | 1 | 310 | 4624 |
| 17 | Velocidad Maxima
Car modifications forums (in spanish) | 1 | 607732 | 6442 |
| 18 | V6 Performance
Forum for owners of V6 powered cars | 1 | 1778371 | 77682 |
| 19 | Racers Den
Car racing forums | 1 | 66563 | 696 |
| 20 | 502 Streetscene
Automotive Discussion Forum | 1 | 3357854 | 11825 |
| 21 | Jabbas World
Car discussion site | 1 | 867937 | 48596 |
| 22 | IWSTI
Subaru Impreza STI owners community | 1 | 3224034 | 77939 |
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