When a new teenage driver gets their license about how much does the car insurance cost?

It can vary greatly. It depends on the teenager, the car they drive, the state they are in. It can even vary depending on the city and possibly the area of the city. It also depends on if they are going on their own policy or being added to their parents. Calling around and getting quotes for insurance companies is the best way to go. It's free and usually no pressure. I recommend you this site where you can compare quotes from different companies: mycheapinsurance.net