I wish it was so easy here as to only define it in terms of hating or not. As I have said before, you can also get into trouble for not hating a car or brand enough.
What I do hate around here is the people who will take one aspect of a car they don't like, state it in a thread, and then instead of leaving it alone, they will post the same grievance over and over again, post after post, thread after thread, ad infinitum. Ok, we get it. You don't like a certain car or brand. So be it.You have stated what you think. But, instead of leaving the thread and letting others who might like that vehicle or brand go and discuss it, they have to keep posting the same thing over and over and over again. All they achieve is making themselves look stupid and driving people away from this board who might want to discuss the vehicle in question.
Any brands that I hate? Not that I can think of. Toyota makes nothing that would interest me right now, but I did take a look at the Toyota and Lexus store before buying my present car. I liked the Genesis Sedan alot, but ultimately chose something different. I really don't believe that any company makes a really bad car anymore.