A used car loan is finance for a second-hand vehicle, and in most cases it is secured against the car you buy. That security usually means a sharper rate than an unsecured personal loan, though it tends to sit a little higher than the rate on an equivalent new car loan.
Lenders see an older vehicle as a riskier asset, so the headline numbers can look slightly less generous. The good news is that the structure is familiar, the comparisons are easy to make once you know where to look, and a bit of preparation puts you in a strong negotiating position at the dealership or the private sale.
How a used car loan works
You borrow a lump sum to buy the car, then repay it over a set term with interest. Because the loan is secured, the lender registers an interest against the vehicle on the Personal Property Securities Register (PPSR). If you stop paying, they can repossess and sell the car to recover the debt. That is the trade-off for the lower rate.
Terms typically run from one to seven years. A longer term lowers the monthly repayment but increases the total interest you pay, and it raises the odds of owing more than the car is worth partway through. Shorter terms cost more each month but less overall.
Most used car loans are fixed rate, which makes budgeting straightforward: the repayment does not move. Some lenders offer variable rates with redraw, which can suit you if you expect to pay the loan down early. If you are weighing up the whole process from scratch, our guide on how to finance a car walks through the options side by side.
The age limit catch
Here is the wrinkle that surprises people. Many lenders cap the age of the vehicle at the end of the loan, not just at the start. A common rule is that the car must be no older than 12 to 15 years when the final repayment falls due.
So a seven-year loan on a car that is already eight years old may not fly, because the vehicle would be fifteen at the end. Either you take a shorter term, or you look at a lender with a more relaxed policy. It pays to ask the lender about their maximum vehicle age before you fall in love with a particular car.
Older or higher-kilometre cars, and private sales rather than dealer purchases, can also attract a higher rate or a smaller maximum loan. None of this is a dealbreaker. It just shapes which lender and which term make sense.
Compare the comparison rate, not the headline
The advertised rate is the warm-up act. The comparison rate is the number that matters, because it folds in most fees and gives you a truer cost of the loan. Two loans with the same headline rate can have very different comparison rates once establishment fees and monthly account fees are baked in.
Read the comparison rate, then read the fees, then borrow only what the car is actually worth.
When you weigh up offers, check these five things:
- Comparison rate. The all-in cost, not the teaser figure.
- Term. Match it to how long you will realistically keep the car.
- Fees. Establishment, monthly, and any account-keeping charges.
- Early repayment cost. Fixed loans can carry a break fee if you pay out early or refinance.
- Loan amount. Borrow what the car is worth, not the most you are approved for.
It is worth taking a few minutes to compare car loan options across several lenders before you commit, since the spread between the best and worst offers on the same car can be hundreds of dollars a year.
Get pre-approved and shop like a cash buyer
Pre-approval is your secret weapon. A lender assesses your finances up front and tells you how much they will lend and at what rate, usually subject to the specific vehicle checking out. You then walk into the dealership, or front up to a private seller, knowing your budget and able to negotiate as though you have cash in hand.
That matters at the dealer in particular. Dealer-arranged finance is convenient, but the rate is not always competitive, and the salesperson may be incentivised to steer you toward it. With your own pre-approval, finance becomes one less thing for them to mark up. Our piece on how to get a car loan covers what documents to have ready and how the assessment works.
A few things to do before you sign:
- Run a PPSR check on the car to confirm there is no existing loan registered against it and that it has not been written off or reported stolen. It costs a few dollars and can save you a great deal of grief.
- Confirm the on-road price, including stamp duty, transfer and any dealer fees, so you borrow the right figure.
- Read the contract for the early repayment terms, especially on a fixed loan.
Used car loan versus the alternatives
A secured used car loan is not the only path. An unsecured personal loan does not put the car at risk and can fund a cheaper or older vehicle that falls outside age limits, but it usually carries a higher rate. Paying cash from savings avoids interest entirely, if you have the funds and do not mind the dent in your buffer.
If the car is for work and you are an employee, a novated lease can bundle the vehicle and running costs into a salary-packaging arrangement with potential tax benefits, though it suits some situations far better than others. The right choice depends on the car, your income and how long you plan to keep it.
The bottom line
A used car loan is a sensible, well-trodden way to buy a second-hand vehicle, as long as you go in with your eyes open. Expect a slightly higher rate than a new car loan, check the lender’s maximum vehicle age before you shop, and judge offers on the comparison rate rather than the headline. Get pre-approved, run a PPSR check, and borrow only what the car is worth. Do that, and the finance becomes the easy part.
This is general information, not personal financial advice; consider your own circumstances and the product disclosure documents, and confirm current rates and fees with the lender (figures last checked June 2026). For independent guidance on car loans and your rights, the federal government’s Moneysmart site is a solid starting point.