i did my passat with black wow yesterday and yes it is very good. only problem i had was where i'd gone over the trim with some kiwi polish, it highlighted the streaks from that. if i had properly prepped it all i'm sure it wouldn't have been a problem.
also worth noting it smells great and you use hardly any of the stuff, so expensive bottle but if you've only got regular trim, (unlike the passats massive panels!) it should last ages!