how much $$$$$$$$

Well I don't know the exact figure but my parents said their total insurance premium tripled when I got on the plan.............:|

And I have no tickets or crashes and I got the good student discount.
 
im 16, so im in the same situation as you...both me and my brother are on his car for insurance ('97 chev cavalier), and my mom is on my mustang (a 46 year old woman that has never gotten a speeding ticket in her life), so things work out pretty slick that way