The short answer: buying a used car well comes down to three things: inspect it properly, know what your trade-in is really worth, and compare the total cost of the finance, not the weekly figure. Before you hand over money, confirm the car's identity and history, run a check on the Personal Property Securities Register to make sure no money is owing and it has not been written off or stolen, and either inspect it carefully or pay for a pre-purchase mechanical check. On the trade-in, a dealer offer is usually well below private-sale value, so it pays to know the gap. And because used car loan rates and terms can vary with the age of the car, compare the total repayments over the full term. Buy smart, not just cheap.
Cover the paperwork and the mechanicals, because a clean engine bay tells you nothing about what is owing on the car. On documentation, confirm the VIN on the car matches the paperwork with no signs of tampering, check the car is currently registered with plates that match, and ask for the full service history rather than "it's been looked after." Crucially, run a Personal Property Securities Register check. On the mechanical side, check tyre wear is even across all four, look underneath for rust or fluid leaks, and test everything electrical, from the aircon to the windows to the infotainment. If you are not confident doing this yourself, a pre-purchase mechanical inspection typically costs a couple of hundred dollars and can save you thousands.
Because a used car can carry someone else's debt, and you can inherit it. The Personal Property Securities Register is the official government register of security interests, operated by the Australian Financial Security Authority. A PPSR check tells you whether there is money still owing on the car, and it can also flag whether the car has been reported stolen or written off. If you buy a car that has finance owing on it and that is not cleared, the lender can potentially repossess it even though you paid for it. A few dollars on a PPSR check before you buy is one of the cheapest pieces of protection you can get.
Usually more than the dealer's first offer, so it pays to know the gap before you accept anything. Dealer trade-in offers typically come in around 10 to 20% below what the same car would fetch in a private sale, sometimes more, because the dealer is pricing in reconditioning, holding costs and their margin. That is not a scam, it is how trade-ins work, but the gap is real. A simple way to use this: get a trade-in quote, then check what similar cars are listed for in your area on a site like carsales.com.au. If the gap looks larger than about 20%, it is worth either trying a private sale or negotiating the trade-in figure up.
Each route trades convenience against how much you walk away with. A trade-in is the fastest and easiest, but usually the lowest return. A private sale gets you the most money, but it takes a few weeks and you manage it yourself. Listing on a major site gives you a real market benchmark for your car's value, which is useful even if you end up trading in, because it tells you whether the dealer's offer is fair. There is no single right answer, it depends on how much time you have and how much the extra money is worth to you.
Each option trades price against certainty. A new car has the full warranty and the latest safety tech, at the highest price and the fastest depreciation. A demo is near-new with the remaining warranty, typically around 10 to 15% cheaper than new. A used car is the lowest entry price with the most choice, but the inspection step really matters, because you are relying on the car's condition rather than a factory warranty. Buying used is often the smartest financial move, provided you do the inspection and the PPSR check properly rather than buying on trust.
Broadly the same, with one difference worth knowing: rates and terms can vary with the age of the vehicle. Lenders sometimes apply higher rates or shorter maximum terms on older cars, because condition and remaining working life affect their risk. That makes the total-cost comparison even more important on a used car. Always compare the total repayments over the full term, using the comparison rate, rather than the weekly figure alone. A slightly higher rate over a shorter term can cost less overall than a lower rate stretched out, so it is the total that tells you the real story.
What should I check before buying a used car? Confirm the VIN matches the paperwork, check it is registered, run a PPSR check for money owing or a write-off, get the full service history, and inspect the mechanicals or pay for a pre-purchase inspection. Those steps catch the most costly problems.
What is a PPSR check and do I need one? A PPSR check searches the government's Personal Property Securities Register to see if there is money owing on the car or if it has been written off or reported stolen. It is well worth doing, because buying a car with finance owing on it can put your ownership at risk.
How much less will a dealer give me for my trade-in? Dealer trade-in offers are typically around 10 to 20% below private-sale value, sometimes more, because the dealer prices in reconditioning and margin. Check what similar cars list for before you accept, so you know the gap.
Are used car loan rates higher than new car loans? They can be. Lenders sometimes apply higher rates or shorter terms on older vehicles because of condition and remaining life. Compare the total cost over the full term using the comparison rate rather than the weekly repayment.
Written by Ashley, founder of Noma Finance. Before becoming a finance and asset broker, Ashley worked at car dealerships and has personally held every loan type Noma helps with. Noma compares options across a panel of lenders, including options that suit used and older vehicles, so you see the total cost before you sign.
Our free Used Car Buying Guide includes the full inspection checklist and the trade-in and finance detail, so you buy smart, not just cheap. Download it here.
This article is general information only. It does not take into account your objectives, financial situation or needs, and it is not financial or credit advice. Consider whether it is appropriate for you and seek advice from a licensed professional before making a decision. Information is current as at the date below and rules and fees can change, so check the linked sources for the latest.
Last updated: July 2026.
- Personal Property Securities Register (AFSA): https://www.ppsr.gov.au
- ASIC Moneysmart, Car loans: https://moneysmart.gov.au/loans/car-loans
- ASIC Moneysmart, Comparison rate (glossary): https://moneysmart.gov.au/glossary/comparison-rate
Sources last checked July 2026.
Written by Ashley, founder of Noma Finance. Before becoming a finance and asset broker, Ashley worked at car dealerships, and has personally held every loan type Noma helps with. Noma compares options across a panel of lenders to help people find finance that fits their situation, explained in plain English.
This article is general information only. It does not take into account your objectives, financial situation or needs, and it is not financial, credit or tax advice. Consider whether it is appropriate for you and seek advice from a licensed professional before making a decision. Tax outcomes for novated leases and chattel mortgages depend on your circumstances, so speak with a licensed tax adviser or accountant. Any figures used are illustrative only.
