What this scenario helps you see
A promotional rate can come with conditions, or force a choice between cheap financing and a cash incentive. Compare the whole written deal, including the real sale price and any discount you'd give up.
Zero interest takes away the interest cost in this model, but not depreciation, tax, insurance or repairs. A payment you can handle isn't the same as a car that fits your total transport budget.
Extra payments shorten the loan here but save no interest, since there isn't any. Think about your cash reserve and your contract terms before paying it off faster.
Test a different rate
| Annual interest | Monthly payment | Total interest |
|---|---|---|
| 0% | $416.67 | $0.00 |
| 2% | $429.64 | $467.01 |
Method and limitations
The model uses fixed monthly amortization: M = P × r ÷ (1 − (1 + r)^−n), with principal P, monthly rate r, and n payments. At zero interest, payment is P ÷ n. Interest and payments are rounded monthly, and the last payment reconciles the balance. See the complete loan methodology for assumptions and sources.
Daily-interest contracts, prepaid finance charges, late payments, and lender rules can produce a different result. This page is an educational example, not a rate quote or approval. CFPB explains loan terminology and disclosures.
Questions about this example
Why does the last payment on a 0% loan differ?
Because $15,000 divided by 36 repeats forever as a decimal. Each payment is rounded to cents, and the final installment picks up whatever principal is left.
Is this page advertising a zero-percent car loan?
No. It's a worked math example with no lender or current offer behind it.
Will extra payments save money on a 0% loan?
No, they only shorten it, because the interest total is already zero. Any other fees or conditions in the contract need their own review.
Should I take a rebate instead of 0% financing?
It depends on the numbers. Compare the full cash-price option and the financing option using real written terms, because the rate alone can't settle it.
