Should be some kind of law on this
Worse rate I ever had was on my first car, 24% but I had like $10k in credit card debt I never intended to pay back. I had like $3k in bank overdraft debt too, literally couldn't open up a bank account back then. Some indian dude hooked me up with the 24% loan at Langhorne Honda
Was able to refinance to 12% after a couple months, then to 6% a couple months after that. Was going to refinance again to 3% but just paid the car off and I been 800 credit score ever since then