The mistake most car buyers make is not getting talked into the wrong car. It is letting the dealership finance the right one. Dealer financing is, on average, more expensive than financing arranged in advance through a bank, credit union, or online auto lender — sometimes by hundreds of basis points. The mechanism is a margin called the "dealer markup," and the conversation that hides it is engineered to focus you on monthly payment rather than total cost.
Walking in with a pre-approved rate flips the dynamic. You become a cash buyer in the dealership's eyes, with all the negotiating leverage that follows. The dealer can still try to beat your rate — and sometimes will, which is fine — but they cannot talk you into a worse rate without you noticing.
What rates are available
Auto-loan rates depend heavily on credit profile and on whether the vehicle is new, used, or being refinanced. The table below is illustrative.
| Credit profile | New car APR | Used car APR | Refinance APR |
|---|---|---|---|
| Excellent (740+) | 5.24 – 7.49% | 5.99 – 8.49% | 5.49 – 7.99% |
| Good (700–739) | 6.99 – 9.99% | 7.99 – 11.49% | 7.24 – 10.49% |
| Fair (640–699) | 9.99 – 14.99% | 11.49 – 17.99% | 10.99 – 16.49% |
| Building (580–639) | 14.99 – 22.99% | 17.99 – 27.99% | 15.99 – 24.99% |
New cars almost always get better rates than used cars because lenders see them as lower risk: known value, full warranties, predictable depreciation curves. The gap is typically half a percent to three percent. Refinance rates often fall between new and used because the borrower's track record on the existing loan is information the new lender values.
New, used, or refinance?
New car loans. Best rates and longest terms (up to 84 months at most lenders). The structural downside is depreciation: new cars lose 20–30 percent of value in the first year, leaving many borrowers "underwater" — owing more than the car is worth — for the first two or three years. If you trade in or total the car during that window, you owe the difference.
Used car loans. Slightly higher rates, but the car has already absorbed the worst of its depreciation. For most buyers, lightly-used cars two to four years old with full service records are the highest-value purchase available. The financing math is also better: you borrow less for less time at a slightly worse rate, and end up paying significantly less in total.
Auto refinance. If you took your current auto loan at the dealership and rates have dropped or your credit has improved, refinancing can save thousands. The math is simple: if the new rate is at least 1.5 percent lower than your current rate and you have at least two years left on the loan, refinancing usually wins. The application takes about fifteen minutes; closing costs are typically minimal or zero.
Four mistakes that cost the most
Focusing on monthly payment instead of total cost. Dealers love this conversation because it lets them stretch the term to make any car "affordable." A $500-per-month payment for 84 months costs $14,000 more than the same car at $700 per month for 60 months.
Skipping pre-approval. See above. The single highest-impact thing you can do.
Stretching to 84-month terms. The math gets ugly fast. You pay significantly more interest, and you are underwater for most of the loan, meaning you cannot easily sell or trade in. Most financial planners cap auto loans at 60 months for this reason.
Ignoring the gap-insurance question. If you put little or nothing down, gap insurance — coverage for the difference between what you owe and the car's value if it is totaled — is genuinely valuable. The dealer will sell it to you at four times what your auto insurance carrier would charge. Buy it from your insurance carrier instead.
Ready to shop?
Below: our top picks for auto loans, drawn from publicly available lender materials.
Top picks: auto loans
The following lenders are highlighted based on a combination of advertised rates, fee structure, accessibility, and reputation. Inclusion does not constitute endorsement of any particular loan offer; all final terms depend on the lender's review of your specific application.
When you click "Visit lender," you leave iLoans.ai and continue to the lender's own website, where their terms and privacy policies apply. iLoans.ai may receive a commission if you complete an application or are approved through these links. This does not affect your rate or the lender's review of your application. Read our advertising disclosure →
Frequently asked questions
Should I get pre-approved before going to the dealership?
Almost always yes. Pre-approval gives you negotiating leverage and protects you from financing markups that can add thousands to your total cost. The dealer can still try to beat your rate — sometimes successfully — but you will know if their offer is actually better.
What is the maximum auto loan term?
Most lenders cap auto loans at 84 months (7 years). Some go to 96 months for high-credit borrowers. Staying at 60–72 months is generally recommended — longer terms cost significantly more interest and can leave you underwater on the loan for years.
Can I refinance an auto loan?
Yes, if you have at least 12 months remaining and either your credit has improved or rates have dropped meaningfully (1.5 percent or more lower). Refinancing has minimal closing costs and can save thousands. Some lenders specialize in this and offer one-page applications.
Does the type of car affect my rate?
Yes. Newer cars get better rates than older cars. Some lenders will not finance vehicles over 10 years old or with over 100,000 miles. Hybrids and electric vehicles sometimes qualify for special rate discounts at participating credit unions.
Should I make a down payment?
If you can afford it, yes — at least 10–20 percent on new cars and 15–20 percent on used. Larger down payments mean smaller loans, less total interest, and protection against being underwater if the car is totaled or you need to sell.
Can I use an auto loan to buy from a private seller?
Many lenders finance private-party purchases, though rates are sometimes 0.5–1 percent higher than dealership purchases due to title verification requirements. PenFed and LightStream are known for accommodating private-party purchases without the rate premium.