Stop finance companies and lenders charging more interest if you have a bad credit score

Car finance is everywhere else days with companys offering it left right and centre
But sadly if you have bad credit score you're getting charged with ridiculous amounts of interest compared to people which have a excellent credit score example if a person with a
excellent credit score borrows £15,000 over 4 year they are charged at 7% interest meaning they are paying back £17,169.56p
A person with good credit score borrow £15,000 over 4 years is charged at 9.2% interest meaning they are paying back £17,860.34p
Not looking so bad right now is it now see how bad it gets
A Person with a fair credit score Borrow £15,000 over 4 years will be charged at 13.2% meaning they are paying back £19,124.40p
Now a person with a bad credit score borrow £15,000 over 4 years will be charged at 19.1%
Interests meaning they are paying back £21,002.52 these companies need to stop taking advantage of vulnerable people