does the car insurance charge extra more for adding a teen driver under 18?

Jessica asked: i’m 17 now and will be in august
i need to learn driving and get the license in this summer break
i’ve the driving permit
my dad is the only driver in the family’s car insurance plan
so, does the insurance charge more if i’m under 18?
if yes, i’m going to apply it after my birthday
thanx
thanx for [...]

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