| Rank | Board name and description | Posts | Members |
| 1 | Forocoches Spanish cars message boards | 46983071 | 423293 |
| 2 | Motor-talk.de German automotive discussion forums | 22362435 | 1370548 |
| 3 | VA Driven Virginia automotive ethusiast forum | 5657868 | 42624 |
| 4 | Automotive Forums Multi-brand automotive message boards | 5611809 | 633330 |
| 5 | Supercars General automotive discussion forums | 4803776 | 177361 |
| 6 | Beyond.ca Canadian car forums | 3105051 | 67209 |
| 7 | Edmunds Automotive Forums | 2829351 | 397694 |
| 8 | Offshore only Offshore boating enthousiasts forums | 2443745 | 42883 |
| 9 | Auto Roule French automotive forums | 1343856 | 5688 |
| 10 | Fast Fours Australian automotive discussion forums | 1337947 | 20903 |
| 11 | UBRF.org Western New York Automotive Forum | 1162012 | 8093 |
| 12 | Car and driver General automotive discussion | 1146383 | 16705 |
| 13 | Auto Extreme Car discussion board (in German) | 1108403 | 96999 |
| 14 | Bilforumet Multi-brand cars forum (in Norwegian) | 1077532 | 18645 |
| 15 | Auto Club Turkey Automotive Discussion (in Turkish) | 974549 | 62196 |
| 16 | Ricecop Forums Car enthusiasts discussion board | 955247 | 2774 |
| 17 | Piston heads Automotive discussion forums | 864230 | 29300 |
| 18 | Cars message board | 253825 | 1011 |