It should say "Bose" on the speaker grilles. It may not be good enough for you but I would assume that if it has it on the grilles, then your car should have bose.
Also, it may say "Bose" when you power on your head unit. Althoughthe Bose equalization can be turned off via the Vagcom and not say anything. Which is the way I liked in on my Symphony I.
Also, it may say "Bose" when you power on your head unit. Althoughthe Bose equalization can be turned off via the Vagcom and not say anything. Which is the way I liked in on my Symphony I.