Anecdotally speaking, BMW sells more cars in Southern California than they do in Bavaria. Observationally speaking, they're all purchased by assholes.
THE SOCAL ASSHOLE SCALE:
They didn't sell nearly as many cars in WA, thus they weren't as highly represented. They were still one of the main offenders, though.
For me, my hatred of German cars is driven almost entirely by my hatred of German car drivers. I recognize that were they all to divest themselves of German cars they would remain assholes and I would need to recalibrate my scale (In NM, for example, they drove Volvos). However, the operational pain they would experience in doing so would be delicious to me.