Buying New vs Used Car: Financing Options Australia
Short answer
Buying new gets you warranty, the latest safety features, and lower interest rates — but you absorb the steepest depreciation in the first few years. Buying used avoids that initial depreciation hit, but financing costs may be higher and you carry more risk on mechanical reliability. The best financial decision depends on how long you plan to keep the car and how you finance it.
Depreciation reality
A $50,000 new car may be worth $35,000 after one year and $25,000 after three. If you sell or trade in early, you lose more than you saved on a lower rate. Used cars at the 2-3 year mark sit on a flatter depreciation curve — the previous owner absorbed the worst of it.
Interest rate gap
New car loans from dealers and banks often start around 5-7%, while used car loans may be 7-10% or higher for older vehicles. Manufacturer finance promotions can push new car rates even lower, sometimes below 2% — but check the fine print on comparison rates.
Total cost comparison
Total cost of ownership includes purchase price, interest, insurance, servicing, and depreciation. A cheaper used car with a higher rate can still cost less overall than a new car with a low rate — but only if you avoid expensive repairs and keep it long enough.
Common mistakes
- Comparing monthly repayments without factoring in depreciation — a lower repayment on a new car does not mean lower total cost if the car loses $15k in year one.
- Using an unsecured personal loan for a used car without checking whether a secured loan at a lower rate is available for the vehicle's age.
- Ignoring the comparison rate on manufacturer finance deals — low headline rates often come with high fees or inflated purchase prices.
- Buying a used car without a pre-purchase inspection and then facing unexpected repair costs that blow the budget.
Car loan repayment calculator
Model repayments for both new and used car loan scenarios side by side.
New vs used comparison tool
Enter both scenarios and see the total cost difference over your ownership period.
Balloon payment calculator
Understand how a balloon payment affects your monthly costs and end-of-term obligation.
Compare before you commit
The cheapest car is not always the cheapest to own.
Run both scenarios through our comparison tool to see total cost including depreciation, interest, and running costs.
Compare new vs usedRelated guides
Frequently Asked Questions
- How fast do new cars depreciate in Australia?
- New cars typically lose 20% to 30% of their value in the first year and around 50% over three years. Luxury and European brands can depreciate faster, while popular Japanese and Korean models tend to hold value better.
- Are interest rates lower for secured vs unsecured car loans on used vehicles?
- Yes. Secured loans — where the car is used as collateral — typically offer rates 2% to 5% lower than unsecured personal loans. However, many lenders restrict secured financing to vehicles under 5 to 7 years old.
- Can I finance warranty or extended coverage on a used car?
- Some lenders allow you to roll the cost of an extended warranty into the loan amount. However, this increases total interest paid. It is often cheaper to buy warranty cover separately if you can afford the upfront cost.