For me it’s the E39 5 Series (and every other BMW of that era).
I just can’t find a single appealing aspect of the E39's design, even in M5 guise. It just looks like a hopelessly-dated, generically-proportioned, boring, uninspiring, unathletic, no-risks-taken, lazy-ass attempt at styling. And yet, you clowns seem to love it.
Now it’s your turn. Which car do you hate that everyone else seems to love?