Hi, purchased a 2015 Audi A3 S line about 4 weeks ago, and was told it comes with DAB radio , I can't seem to find the DAB wavelength in the list and have no DAB stations stored only FM/AM. Have done a check on myAudi and it definitely left the factory with DAB and the Bang & Olufsen upgrade, Could it be an aerial problem or something more sinister, its fitted with the shark fin aerial if it helps, Thanks