Loan-to-Value (LTV)
What is loan-to-value on a car loan?
Loan-to-value, or LTV, is the amount financed divided by the vehicle's book value. Finance $18,000 against a car valued at $15,000 and your LTV is 120%. Subprime lenders cap LTV per program, and the cap tightens as credit worsens depending on the program, because the cap limits their loss if the vehicle has to be repossessed and sold.
Key takeaways
- LTV is the amount financed as a percentage of the vehicle's wholesale or book value, not its sticker price.
- Subprime lenders set a maximum LTV per program, and it is a hard ceiling rather than a guideline — the deal is cut down to fit it.
- The amount financed usually exceeds the price of the car, because tax, title, fees, add-on products, and rolled-in negative equity are all financed.
- LTV and payment-to-income are the two limits that most often cut a deal down from the vehicle the buyer picked.
- A down payment lowers LTV dollar for dollar, which is why money down changes approvals more than credit score improvements do in the short term.
What is LTV?
Loan-to-value is the amount you are financing, divided by what the lender believes the vehicle is worth.
The lender does not use the sticker price. It uses a book value — a wholesale or trade guide figure for that year, model, mileage, and condition. That number is usually lower than what the car is advertised for, which is why LTV is almost always higher than buyers expect.
Finance $18,000 against a book value of $15,000 and the LTV is 120%.
Why is the amount financed bigger than the price of the car?
Because several things ride along with the vehicle into the loan.
- Sales tax, title, and registration, which in many states are financed rather than paid up front.
- Dealer fees, including documentation fees.
- Add-on products — GAP, service contracts, protection packages.
- Negative equity from the trade-in, when the old loan is not paid off by what the car is worth.
A $16,000 car can easily become a $20,000 amount financed. The lender is then advancing $20,000 against a book value that may be $17,000, and the LTV test runs on those two numbers, not on the price you negotiated.
Why do subprime lenders cap it?
Because LTV is the lender's loss estimate. If the loan goes bad, the lender's recovery is whatever the car brings at wholesale auction, and everything above that becomes a deficiency balance it has to chase.
A lender that advanced close to book value on a repossessed vehicle recovers a fair share of it at auction. A lender that advanced far above book does not. So each program carries a maximum advance, set by the lender rather than by any industry standard, and it moves with your tier and the vehicle. Deeper credit tiers get lower caps, and older, higher-mileage vehicles get lower caps still. Ask the dealer what the cap is on the program your deal is going to.
This is also why an approval can come back for less money than you asked for. The lender is not rejecting you. It is refusing to advance more than its cap allows on that specific car.
How does a down payment move it?
Dollar for dollar, and immediately. It is the only lever that works the same day.
| Down payment | Amount financed | LTV against $17,000 book value | Payment at 18.86%, 72 months |
|---|---|---|---|
| $0 | $20,000 | 118% | $466/mo |
| $1,000 | $19,000 | 112% | $443/mo |
| $2,500 | $17,500 | 103% | $408/mo |
*Rate shown is the Experian Q4 2025 average used-vehicle APR for the subprime tier (18.86%). Payments computed on the amount financed.*
Two things happen at once. The LTV drops under the program cap, which is what makes the approval possible. And the payment drops, which is what makes it pass the payment-to-income test. A buyer who is failing both tests can often fix both with the same money.
What to do about a failed LTV
Choose a cheaper vehicle, or put more down. Those are the two real answers, and a cheaper vehicle is often the better one, because it lowers the numerator and raises nothing.
What does not work is arguing about the book value, and what works badly is stretching the term. A longer term makes the payment fit while leaving the LTV exactly where it was — and it keeps you underwater for longer, which sets up the same problem on the next car.
If you are close to the cap and the dealer suggests dropping the add-on products to make the deal fit, that is usually sound advice rather than a trick. Removing a financed service contract lowers the amount financed the same way cash does.
Related: negative equity, down payment, and GAP insurance.
Sources
- Auto Loans Research Reports — Consumer Financial Protection Bureau