1) The car has to be within 7 years old to enjoy a reasonably good rate with car used as security. % W j' Y7 ]' g% x+ O7 s2) Depends on your credit history and credit score. ' p! l4 _9 S" j- [. x5 Y1 D3) Depends on your relationship with the financial institution. . n- h+ C% Y7 Z5 b6 R4) The only advantage you have is that you pays the cash, and can discount that from the seller. 4 s" @: I% @3 y# e5) For cars more than 7 years old, the interest can be significantly higher because the collateral value is hard to assess. Good luck.