[Viffermike]

Previous comments aside ... nothing -- I repeat: nothing -- compares to the prejudice encountered as a sportbike rider. That makes any other type of vehicular anti-marque bias fade to barely noticeable if you're anything but hyper-aware like I am.

That said: BMW bias is real. I live in one of those 'dime-a-dozen' cities, but I don't always drive in the 'dime-a-dozen' areas of that city. Behavior toward my BMW was markedly different between Uptown and, say, Garland, or between the Dallas North Tollway and, say, I-35E between Oak Lawn and I-635.

(What's more real: Porsche bias, in some similar ways (folks cutting you off) and not similar ways (folks with genuine good-natured interest).)

The majority of people may not care what you're driving, but subliminally most know the general profile of a BMW in the same way they know the general profile of a Cadillac, or (at this point) a Prius. That informs behavior. Those who feel that it doesn't don't understand how the human mind works.