1) The car has to be within 7 years old to enjoy a reasonably good rate with car used as security. / [; B+ P6 d/ ^; N Y+ K0 { H2) Depends on your credit history and credit score. / W% ^: _( |1 }+ i# Q; @0 F3) Depends on your relationship with the financial institution. " C/ E# h+ D" o Z7 Q4 p4) The only advantage you have is that you pays the cash, and can discount that from the seller. $ T6 u( R7 x& u, P8 B6 |" S% @0 c0 j5) For cars more than 7 years old, the interest can be significantly higher because the collateral value is hard to assess. Good luck.