Are gloves necessary when changing bulbs?

Yes, it is true some of the new light bulbs should not be toughed. The oils on your skin will leave a residue on the bulb which will shorten it's life. Halogen bulbs are the most common bulbs affected by this issue but a good rule would be not to touch any bulb if you are not sure. Gloves are not necessary - holding a towel or rag in your hand is ok, just don't touch the bulb directly with your fingers. Check with your local parts store or VW dealer for specific bulb information.