Topic IV of VII

Auto Loans

Car financing goes wrong in predictable places: negotiating the payment instead of the price, add-ons rolled into the loan, and terms long enough that you owe more than the car is worth. These guides walk through each one, with the math.

Start here if: You're buying a vehicle or wondering whether to refinance the loan you have.

A printed price and information sheet propped against the windshield of a car in a dealership showroom
Start here

How to Finance a Car Without Losing the Deal in the Finance Office

A step-by-step plan for car financing: what to do before the lot, what happens in the finance office, and the numbers to check before you sign.

Reading order

The auto loans guides, in a sensible order

  1. Step by step

    How to Finance a Car Without Losing the Deal in the Finance Office

    A step-by-step plan for car financing: what to do before the lot, what happens in the finance office, and the numbers to check before you sign.

    10 min readReviewed October 12, 2026
  2. Explainer

    72- and 84-Month Car Loans: What the Lower Payment Costs

    Long car loans make the monthly number smaller. Here is what they do to total interest, to how fast you build equity, and to your next car purchase.

    7 min readReviewed October 12, 2026
  3. Worked example

    Refinancing a Car Loan: Two Worked Examples, One Trap

    Two hypothetical refinances of the same car loan: one that saves real money and one that only looks like it does. Plus the fees, penalties and equity problems to check first.

    7 min readReviewed October 12, 2026
  4. ILoan BasicsComparison

    Loan Term and Total Cost: What a Lower Monthly Payment Really Buys

    The same $15,000 loan across five terms, what each extra year of payments costs, and a practical way to pick a term you can live with.

    7 min readReviewed October 12, 2026
  5. ILoan BasicsComparison

    Secured vs. Unsecured Loans: What You Pledge and What You Risk

    A secured loan can mean a lower rate or an easier approval. It also means a specific thing you own is on the line. Here's how to weigh it.

    7 min readReviewed October 12, 2026
Quick answers

Questions people ask about auto loans

Should I get preapproved before going to the dealer?

It helps. A preapproval from a bank or credit union gives you a rate to compare against the dealer’s financing, and lets you negotiate the car’s price separately from the loan. Step by step.

When does refinancing a car loan make sense?

Usually when you can get a meaningfully lower rate without stretching the term much, and the fees pay for themselves within a few months. Extending the term can lower the payment while raising the total. Check your break-even.

What does it mean to be upside down on a car loan?

It means you owe more than the car is worth. Long terms and small down payments make it more likely, and it becomes a problem if you need to sell or the car is totaled.

Tools for this topic
Terms to know
Glossary
Negative equity
Owing more on a loan than the item securing it is worth, such as a car loan balance higher than the car's value. Also called being upside down.
Loan-to-value ratio (LTV)
The loan balance divided by the value of the collateral, as a percentage. Lenders use it to set terms on car loans, refinances and home equity borrowing.
Refinancing
Replacing an existing loan with a new one, usually to get a lower rate, a different term, or a different payment. Fees and a longer term can cancel out the savings.
Break-even point
How long it takes for the monthly savings from refinancing to add up to the fees you paid to refinance. After that point, the new loan is ahead.
Collateral
Property you pledge to secure a loan, which the lender can take if you default. Common examples are a vehicle title, a savings account or certificate, and home equity.
Loan term
How long you have to repay a loan, usually stated in months. A longer term lowers each payment and usually raises the total interest you pay.
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