Financing (bank vs dealer vs CU)

How you finance a car can cost or save you thousands of dollars over the life of the loan. The three main financing sources — banks, credit unions, and dealership financing — each have distinct advantages and drawbacks.

21 steps across 5 sections

1. How It Works

  • Dealer submits your credit application to lenders
  • Lender approves you at a "buy rate" (e.g., 5.0%)
  • Dealer marks up the rate (e.g., to 7.0%)
  • The 2% difference goes to the dealer as profit
  • This is 100% legal and extremely common

2. How to Prevent It

  • Get pre-approved first Walk in with your credit union or bank rate in hand
  • Tell the dealer to beat your rate They often can — and now they're competing downward instead of marking up
  • Ask for the buy rate Some dealers will disclose it; others won't, but asking signals sophistication
  • Compare the APR Focus on APR, not monthly payment

3. Step-by-Step

  • Check your credit score — Free via Credit Karma, your bank, or AnnualCreditReport.com
  • Apply to your credit union (if eligible) — Usually the best rate
  • Apply to your bank — Especially if you have a long relationship
  • Apply to 2-3 online lenders — LightStream, Capital One Auto, PenFed, myAutoloan.com
  • Compare offers — Focus on APR, not monthly payment; compare total interest paid over the loan term
  • Bring your best offer to the dealer — Let them try to beat it; if they can't, use your pre-approval

4. Multiple Applications and Credit Score Impact

  • Rate shopping for auto loans within a 14-day window (some models use 45 days) counts as a single hard inquiry on your credit report
  • Don't spread applications out over weeks — do them all within 1-2 weeks

5. Key Principles

  • 48-60 months is the sweet spot — Manageable payments without excessive interest
  • 72-84 month loans are dangerous You'll be underwater (owe more than the car is worth) for years; total interest is significantly higher
  • If you need 72-84 months to afford the payment, you're buying too much car
  • Longer terms often come with higher rates — Lenders charge more for the added risk

Sources

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