This is an odd question. There are tons of active discussion boards that can be found with trivial effort. Other replies have mentioned forums for specific auto

This is an odd question. There are tons of active discussion boards that can be found with trivial effort. Other replies have mentioned forums for specific auto makes and models, and you'll find they get spun up quite quickly when a new model comes out, and attract a lot of traffic. I don't think anyone has mentioned Steam discussion boards yet. Heck, Facebook is a discussion board in many respects.