Just as you want to pay the best price for a car, you should also comparison shop for the best deal on a car loan. And the ideal time to shop for a car loan is
before you shop for a car.
Getting your loan preapproved before you start looking for a car is like shopping with cash. You can drive the car right off the lot -- no more waiting for the loan to be approved and disbursed and taking the check back to the dealer. In most cases the loan can be approved by your lender in a couple of days.