Used Car Financing Options: What to Know Before You Sign Anything
When you finance a used car in Australia, your main options are a secured car loan, an unsecured personal loan, dealer-assisted finance, or drawing on the equity in your home loan. Each suits a different situation, and the right choice depends on the age of the car, your credit history, and whether you value convenience or the lowest possible rate. Whichever you choose, the single most important habit is to compare every offer on the comparison rate and the total repayment amount, not just the monthly figure.
You have found the right used car. How you pay for it quietly decides how much that car really costs you. Two buyers can drive away in the same vehicle at the same price, and one can still pay thousands more, purely because of the finance they signed. If you are weighing up where to buy in the first place, our First Time Buyers Guide to Used Cars covers the wider journey. This article focuses on paying for the car, and on shopping with confidence at trusted used car dealers in Adelaide.
The Two Questions Every Used Car Buyer Should Ask Before Talking Finance
Before you speak to a single lender or finance manager, get clear on two questions. They matter more than any advertised rate.
- Question 1: What type of finance suits my situation? Secured loans, unsecured loans, dealer-assisted finance and home loan equity all suit different buyers. The sections below break each one down.
- Question 2: What will I pay in total, not just per month? A low monthly repayment can hide a high total cost. Always ask for the total repayment amount over the full term, and compare offers on the comparison rate, explained below.
There is also one move that pays off no matter which option you choose: get pre-approved before you shop.
| The pre-approval advantageHere is the single most useful thing you can do before you visit any dealership: contact your bank and get pre-approved for a car loan. It takes around 10 to 30 minutes and gives you an actual rate to compare against whatever the dealer's finance manager offers. If the dealer's rate is better, take it. If it is not, you already have your own finance arranged. Either way, you walk in with a number in your pocket, and that changes the whole conversation. |
Option 1: Secured Car Loan (from a Bank, Credit Union, or Online Lender)
A secured car loan is the option most buyers picture first. It is widely available and usually carries the lowest interest rates of the dedicated car finance options.
- The car is the security. You borrow against the vehicle itself. If you cannot keep up repayments, the lender can repossess and sell it to recover the debt.
- Lower interest rates. Because the loan is secured, the lender takes on less risk, so rates are generally lower than an unsecured loan.
- Widely available. You can arrange a secured loan through banks, credit unions, building societies and online lenders, which makes offers easy to compare.
- Vehicle age limits apply. This is the catch many buyers miss. Most lenders require the car to be no more than 10 to 12 years old at the end of the loan term. A five-year loan in 2026 on a 2017 model leaves the car at 14 years old by the final repayment, which many lenders will decline.
- Get pre-approved first. A pre-approval is not a commitment, just a ceiling and a comparison point you can carry into any dealership.
Who this suits: Buyers with a reasonable credit history purchasing a vehicle under about 10 years old who want to compare rates independently.
Option 2: Unsecured Personal Loan
An unsecured personal loan is the option many buyers overlook, but it solves a problem secured loans cannot, particularly for older cars.
- No security required. The loan is not tied to the car, so the lender carries more risk. That usually means a higher interest rate.
- No vehicle age restriction. Because the car is not the security, the age of the vehicle does not disqualify you. This is the key advantage when financing an older car.
- Often smaller loan amounts. Maximum borrowing limits tend to be lower than a secured car loan.
- Flexibility. Some buyers simply prefer not to put the car up as security, even when they could.
Who this suits: Buyers financing an older vehicle that a secured loan's age limit would exclude, or who want flexibility without using the car as security.
Option 3: Dealer-Assisted Finance
Dealer-assisted finance is arranged through the dealership rather than directly with a bank. As a dealer, we will be straight with you about how it works, including the parts worth watching. At Adelaide Vehicle Centre, finance is available through the dealership; our Finance page sets out what is on offer.
- A panel of lenders. The dealer submits your application to a panel of lenders and comes back with an offer. You apply once and they do the legwork.
- Convenience, the genuine drawcard. You can choose the car, arrange finance, and hand over a trade-in, all in a single visit. This is the one-stop shop buyers value.
- The rate may or may not beat your bank. It depends on the panel and your credit profile, so compare on the comparison rate. This is exactly why pre-approval matters.
- Add-ons are optional. Finance is often offered alongside extra insurance products. You are not required to take them, as the callout below explains.
Dealer finance makes the most sense when you are buying from a dealer rather than privately, as our guide on dealer vs private used car sales explains.
| The add-on insurance problemWhen you sit down to finalise finance at a dealership, you may be offered loan protection insurance, gap cover, or tyre and rim protection. These products are sometimes folded into the monthly repayment figure so they feel small. Australia's Moneysmart says plainly that they are generally not good value for money, and you are not required to take them. They are optional. You can politely say no. |
Who this suits: Buyers who value convenience, want a trade-in handled at once, or are buying a vehicle outside standard bank lending criteria.
Option 4: Using Equity in Your Home Loan
If you own your home, there is one more option worth knowing about, though it is not for everyone.
- Using redraw or offset. Some homeowners draw on a redraw facility or offset account to pay for a car. The effective rate is the home loan rate, which is often lower than a car loan rate.
- It extends your mortgage. The amount is added back onto your home loan and, spread over a long term, a car can cost far more in total interest unless you pay it down deliberately.
- Homeowners only. This option only applies if you have enough equity, so it is not a mainstream route for most used car buyers.
- Get advice first. Because your home is involved, speak with a financial adviser before using home loan equity to buy a car.
Who this suits: Homeowners with available equity and the discipline to pay the amount down quickly, who have first sought financial advice.
Quick Comparison of Your Finance Options
| Finance type | Best for | Keep an eye on |
|---|---|---|
| Secured car loan | Newer cars and the lowest dedicated car loan rates | Vehicle age limit at the end of the term |
| Unsecured personal loan | Older cars and flexibility | Higher rate and smaller loan amounts |
| Dealer-assisted finance | Convenience, trade-ins and a single visit | Check the comparison rate; decline optional add-ons |
| Home loan equity | Homeowners with available equity | Can lift total interest; get advice first |
| Balloon payments (also called a residual)Some car loans, including dealer-arranged finance, offer a balloon payment, sometimes called a residual. This is a lump sum left to pay at the end of the loan term, agreed upfront. Pushing part of the loan to the end lowers your monthly repayments, but it raises the total cost, and you must have the cash ready, or arrange to refinance, when the balloon falls due. A balloon is not necessarily a bad thing. Only agree to one if you understand the final payment and have a clear plan to meet it. |
The Comparison Rate: The One Number That Matters Most
If you take one thing from this article, make it this. The comparison rate is the single most useful number when weighing up any car loan.
- It includes the fees. The comparison rate combines the interest rate with the standard fees and charges as one annual percentage. The headline rate usually leaves fees out, which is why it looks lower.
- It is required by law. Lenders in Australia must display the comparison rate alongside the advertised rate, so you can always find it.
- It lets you compare fairly. Two loans with the same headline rate can have very different comparison rates once the fees are counted.
As an illustration, a loan advertised at one rate might carry a comparison rate a full percentage point higher once fees are added. On a $20,000 loan over five years, that gap can add hundreds of dollars to what you repay. Always compare loans on the comparison rate, never the headline rate alone.
Before You Sign: The Three Things to Check on Any Car Finance Agreement
Whichever option you choose, run through these three checks before you sign anything.
- The comparison rate, not just the headline interest rate. It is the truest measure of what the loan actually costs.
- The total repayment amount over the full repayment term, not just the monthly figure. Ask for it in writing.
- Any add-on insurance products. Check whether loan protection, gap cover or similar are included, and decide whether you actually want them. Remember they are optional.
| The monthly repayment trapA $20,000 used car financed over seven years can end up costing $28,000 or more by the time the loan is repaid. The monthly repayment looks manageable. The total does not. Before you agree to any finance, ask for the total repayment amount in writing and make sure you are comfortable with that number, not just the monthly one. |
When you are ready to look at dealer finance specifically, our Finance page sets out the options available through Adelaide Vehicle Centre.
Frequently Asked Questions
What is the best way to finance a used car in Australia?
There is no single best option. It depends on the age of the car, your credit history and your priorities. As a guide, get pre-approved from your bank, compare that against dealer finance on the comparison rate, and choose whichever is lower.
Is dealer finance more expensive than a bank loan?
Not necessarily. Dealer finance can be competitive, particularly when it is bundled with a trade-in handled in the same visit. The way to know is to compare on the comparison rate, which is why getting pre-approved first is so useful.
What is the difference between interest rate and comparison rate?
The interest rate is the cost of borrowing the money only. The comparison rate includes that interest plus the standard fees and charges, expressed as a single annual percentage. Because it captures the fees, the comparison rate is a more accurate guide to the true cost of a loan, so always compare car loans on the comparison rate rather than the headline rate.
Can I finance a used car that is more than 10 years old?
Often yes, but not always with a secured car loan. Most banks limit secured loans to cars under about 10 to 12 years old at the end of the term. An unsecured personal loan has no age restriction, and dealer-assisted finance can sometimes access more flexible lenders for older vehicles.
Should I get pre-approved for a car loan before shopping?
Yes. Pre-approval gives you a budget ceiling, a comparison rate to measure any dealer offer against, and more confidence in the conversation. It does not commit you to that lender, so you can still choose dealer finance if it turns out to be the better deal.
Choosing What Suits You
Finance is one of the biggest factors in what a used car really costs you. Compare your options, lean on the comparison rate and the total repayment figure, and choose the path that suits your situation. If you would like to talk it through, enquire with our car dealership team any time.
This article provides general information only and does not constitute financial advice. Always compare products carefully and consider seeking independent financial advice before committing to any loan or finance product.