The average interest rate on used car loans is above 10%, they do buy used, but it's even more of a scam
It should be a lot lower. E.g. current rates: https://www.penfed.org/auto#cbs
I still remember the first thing my bank offered me as a student in the US, a credit card, 25%+ apr, give that to a 18 years old clueless kid and you'll set them up for failure. The entire system is setup to make you think these interests rate are normal and that being in debt is a proper lifestyle