New Car vs Used Car: The Numbers That Will Make Up Your Mind
Used cars win on upfront price. New cars win on rates and warranty. Here's the exact 2026 maths — petrol, EV, depreciation, vehicle age caps and total cost of ownership.
New Car vs Used Car: The Numbers That Will Actually Make Up Your Mind
Most "new vs used" car guides sit on the fence. This one doesn't. Used cars win on upfront price. New cars win on interest rates, warranty peace of mind, and — increasingly — EV incentives. Which one wins for you depends on how long you keep the car, your credit score, and whether you're buying petrol or electric. Here are the exact numbers that decide it.
The tl;dr Decision Matrix
You don't have to read the whole guide. Use this table first, then read deeper if you still need convincing.
| Buy new if… | Buy used if… | Buy EV new if… |
|---|---|---|
| You keep cars for 8+ years | You keep cars for 3–5 years | You have business use / can claim FBT exemption |
| Your credit score is below 650 (new rates are more forgiving) | You can pay a larger deposit to reduce the loan size | You want the cheapest green loan rate (from 5.29%) |
| You want manufacturer warranty + roadside cover | The used car is under 3 years old and has full service history | You're in a state with stamp duty concessions on EVs |
| You're buying a Ford Ranger or Toyota RAV4 (strongest resale, slowest depreciation curves) | You want to avoid the 10–15% drive-off depreciation hit | You want access to government rebates before they phase out |
Why Lenders Charge More for Used Car Loans — And by Exactly How Much
Lenders price risk into every rate they quote. A used car has three compounding risk factors that a new car doesn't:
1. Higher default correlation. Borrowers who can't qualify for new car finance often end up in used car finance. Lenders know this. The entire used loan book carries a slightly worse default rate, and that cost is spread across every borrower — including you.
2. Faster depreciation as collateral. If you default and the lender repossesses a 5-year-old car, they're selling into a softer market at a worse time in that vehicle's depreciation curve. Their loss exposure is greater.
3. Vehicle age caps that reduce loan terms. Most lenders require the car to be under 7 years old at the end of the loan term — not at the start. A 4-year-old car can typically get a maximum 3-year loan, not 5 years. Shorter terms mean higher monthly repayments on the same balance, which increases stress-to-income ratios, which increases default risk. The lender hedges with a higher rate.
The Rate Gap in Black and White
Here's exactly what the spread looks like in May 2026:
| Loan type | Average rate | Best available rate | Bad credit ceiling |
|---|---|---|---|
| New car loan | 8.99% p.a. | 5.67% p.a. | ~14% |
| Used car loan | 11.27% p.a. | 5.80% p.a. | 18.74% |
| Green / EV new car loan | ~7.50% p.a. | 5.29% p.a. | N/A (asset-dependent) |
The average gap is 2.28 percentage points. That sounds small. Run it through a loan calculator and it isn't.
Example: $33,891 at 8.99% over 5 years = $703/month. The same amount at 11.27% = $741/month. That's $38/month more — or $2,280 extra in interest over the life of the loan, purely because the car was used. And the average used car loan is $33,891, so this is a live scenario, not a hypothetical.
The best-rate gap (5.67% vs 5.80%) is tiny — only 13 basis points — so if you have excellent credit and are buying a late-model used car, the rate premium nearly disappears. The real damage is in the mid-credit and bad-credit tiers, where used car rates blow out to 18.74%.
The Depreciation Maths: When New Actually Wins
Here's the inconvenient truth about used cars: you're not avoiding depreciation. You're buying the depreciation someone else already absorbed.
A new car typically loses 10–15% the moment you drive off the lot — the "drive-off loss" — then another 10–15% in year one. So a $52,000 new car is worth roughly $38,000–$42,000 after 12 months. That loss is real and it's yours if you sell or trade in early.
But here's the flip:
- A 3-year-old equivalent model typically costs 20–30% less than new.
- The car has already absorbed years one through three of the steepest part of the depreciation curve.
- From year four onwards, depreciation slows significantly.
If you hold a car for 8 years or more, the arithmetic largely equalises. You paid more upfront for new, but you benefited from the flattest part of the depreciation curve for longer. If you hold for 3–5 years, used almost always wins on total cost — you get out near the bottom of the steep curve, which is exactly where you want to be selling.
The exception: high-demand vehicles with strong resale. The Ford Ranger (Australia's most popular financed car) and Toyota RAV4 (second) depreciate more slowly than average. Buying new on these models is less painful because the market keeps their values high.
Vehicle Age Limits Lenders Use — And Why They Matter
This is the trap most buyers don't see until they've already fallen in love with a car.
Standard lender rule: The car must be under 7 years old at the end of the loan term, not at purchase.
So if you want to buy a 2019 model (6 years old) with a 5-year loan, you're out: the car will be 11 years old at loan maturity. Most lenders won't touch it as a secured car loan.
Your options when the car is too old:
- Shorten the loan term to keep the end-age under 7 years. Shorter term = higher monthly payment.
- Switch to a personal loan. Unsecured personal loans don't have vehicle age restrictions, but rates run 9–15% p.a. — and often higher — compared to secured car loan rates.
- Find a specialist lender. Some lenders cap at 12–15 years total vehicle age rather than 7 years at end of term. They exist, but they're not on every comparison panel.
The average car on Australian roads in January 2025 was 11.54 years old. That means the typical car you see driving around you is unfinanceable through a standard secured loan. If you're buying anything older than about a 2019 model, factor this in before you fall in love with the asking price.
Total Cost of Ownership Comparison: Worked Example
The "used car is cheaper" argument is only true if you compare total cost of ownership, not just the sticker price. Here's a real worked example over 5 years.
Vehicle: Mid-sized SUV, equivalent spec
| Cost component | $40,000 new (2026 model) | $30,000 used (2023 model, 3 years old) |
|---|---|---|
| Purchase price | $40,000 | $30,000 |
| Loan amount (10% deposit) | $36,000 | $27,000 |
| Rate | 8.99% p.a. | 11.27% p.a. |
| Term | 5 years | 5 years |
| Total interest paid | $8,782 | $8,393 |
| Estimated residual value (year 5) | ~$18,000 | ~$12,000 |
| Net depreciation cost | $22,000 | $18,000 |
| Insurance (5 yr estimate — new costs more) | $8,500 | $7,000 |
| Servicing (new has free scheduled servicing yr 1–3) | $4,000 | $5,500 |
| Estimated 5-year TCO | ~$43,282 | ~$38,893 |
Used car saves approximately $4,400 over 5 years in this scenario — not the $10–16K often quoted for equivalent petrol models with a larger price gap. The bigger the purchase-price difference, the bigger the used car advantage. Where used really pulls ahead is when you're comparing a $40K new car to a $28K equivalent used car — the gap widens to $10,000+ because you're carrying less debt from day one.
The new car's lower rate (8.99% vs 11.27%) partially offsets its higher price, which is why the total interest paid is nearly identical despite the $9,000 price gap.
The New Car Advantage You're Probably Ignoring: EV Incentives
If you're considering an electric vehicle, the new vs used calculus shifts significantly in favour of new.
Green car loan rates from specialist lenders currently start at 5.29% p.a. — roughly 3.7 percentage points below the average used car loan rate. On a $60,000 EV loan, that rate difference saves you over $6,500 in interest over 5 years.
FBT exemption: New EVs (and PHEVs ordered before 1 April 2025) priced under the luxury car tax threshold ($91,387 for fuel-efficient vehicles in FY2025–26) are exempt from Fringe Benefits Tax when provided through a novated lease. For someone on a $120,000 salary, this exemption can be worth $15,000–$20,000 over a 3-year lease. This benefit does not apply to used EVs under most arrangements.
State stamp duty concessions: Queensland, ACT, and Tasmania currently offer stamp duty reductions or exemptions on new EVs. Victoria phased out its EV subsidy but retains registration benefits. These concessions are typically unavailable on used EV purchases.
Used EVs aren't completely left out: Used EV sales jumped 92.2% in H1 2025 vs H1 2024 — demand is surging, which means used EV prices remain elevated. Some green lenders now offer reduced rates for used EVs under 5 years old, but the headline incentives still favour buying new.
Used Car Financing for Older Vehicles: What Changes?
Once a car is too old for a standard secured loan, your financing options narrow — and the cost goes up.
Secured car loan (standard): Available for cars under 7 years old at loan maturity. Rates from 5.80% p.a. The car is used as collateral.
Secured car loan (specialist): Some lenders accept vehicles up to 12–15 years old. Rates typically 1–3% higher than standard. The lender compensates for weaker collateral with a higher rate.
Unsecured personal loan: No vehicle age restriction. No PPSR or asset check required. Rates: 9–15% p.a. for good credit, higher for impaired credit. The lender has no collateral, so the rate fully reflects the borrower risk, not the asset risk.
The PPSR check is non-negotiable for any used car. A PPSR (Personal Property Securities Register) check costs $2 per search at PPSR.gov.au and tells you whether the car has finance owing on it, has been reported stolen, or is a write-off. If there's money owing and you buy the car, that debt can follow the vehicle — not the seller. $2 is the cheapest insurance in this entire transaction.
Private Sale vs Dealer Purchase: Financing Differences
Buying from a dealer is simpler from a finance perspective. The dealer handles settlement — your lender pays them directly, you drive away.
Private sale is different. You are responsible for settlement, and so is your lender. Here's how it works:
- Get pre-approved before you start looking. Pre-approval gives you a loan ceiling, locks in a rate, and lets you move fast when you find the right car. Without it, the seller can accept another offer while you're still waiting for finance approval.
- Once you agree on a price, submit the vehicle details (make, model, year, VIN) to your lender for final approval.
- Lender will require a PPSR search result, a roadworthy certificate (in some states), and the signed contract of sale.
- Settlement: Your lender transfers funds directly to the seller's bank account — not to you. The car must be unencumbered (no finance owing) for this to proceed.
- Transfer of registration is your responsibility post-settlement.
The risk in private sale is buying a car with undisclosed finance or a hidden write-off history. The PPSR check, a vehicle history report, and an independent mechanical inspection ($150–$250 from a licensed mechanic) are worth every cent.
Our Verdict: The 5 Questions That Decide It For You
Skip the spreadsheet. Answer these five questions:
1. How long will you keep this car? Under 5 years → used wins. Over 8 years → new is competitive. In between → compare actual TCO for the specific models you're choosing between.
2. What's your credit score? Under 600 → new car loans are more accessible and less punishing. Above 700 → you can access the best used car rates and the gap is minimal.
3. Is it an EV? Yes → buy new and access the green loan rate, FBT exemption, and state concessions. The maths strongly favour new for electric.
4. How old is the car you're considering? Over 7 years old (at end of loan term) → check vehicle age against lender rules before you commit to anything.
5. Is it a private sale or dealer? Private sale → get pre-approved first, run the PPSR, get a mechanical inspection. Don't skip steps.
Frequently Asked Questions
Why is the interest rate higher for a used car loan than a new car loan?
Lenders charge more for used car loans because used cars are riskier collateral — they depreciate faster, are harder to value accurately, and are more likely to be bought by borrowers with lower credit scores. In May 2026, the average rate gap is 2.28 percentage points (8.99% new vs 11.27% used). For bad-credit borrowers, used car rates can reach 18.74% p.a.
What is the maximum age of car I can finance with a standard car loan in Australia?
Most lenders require the car to be under 7 years old at the end of the loan term — not at the start. A few specialist lenders accept vehicles up to 12–15 years old, but at higher rates. If the car is too old for a secured loan, an unsecured personal loan is the fallback, with rates typically running 9–15% p.a.
Should I buy new or used to get the cheapest total cost of ownership?
For a 5-year ownership period, used typically wins by $4,000–$16,000 depending on the price gap between models. For 8+ years of ownership, the advantage narrows considerably. The used car advantage is largest when you buy a well-maintained 3-year-old vehicle and hold it to 8–10 years, absorbing only the flat part of the depreciation curve.
Can I get a green car loan for a used electric vehicle?
Yes, some lenders now offer green loan rates for used EVs under 5 years old. However, the best headline rates (from 5.29% p.a.) and the FBT exemption are typically only available for new EVs. Used EV green loans generally sit 0.5–1.5% higher than the equivalent new EV rate.
How do I finance a car bought from a private seller?
Get pre-approved for the loan amount before you start looking. Once you agree on a price, provide the vehicle details to your lender. They'll confirm approval, require a PPSR check and signed sale contract, then transfer funds directly to the seller. Do not hand over cash before your lender settles — the settlement protects you from encumbered vehicles.
What is a PPSR check and why do I need it for a used car?
The Personal Property Securities Register (PPSR) is Australia's national register of security interests. A PPSR check — currently $2 per search at PPSR.gov.au — tells you if a car has outstanding finance, has been reported stolen, or is a statutory write-off. If you buy a car with finance still on it, the lender may have the right to repossess it even if you paid fair value. This is one of the most important $2 you'll spend.
Does depreciation make a new car a bad financial decision?
Not automatically. New cars lose 10–15% at drive-off and another 10–15% in year one — but from year three onwards, depreciation slows. If you hold for 8+ years, you benefit from the flat part of the depreciation curve for most of your ownership. The depreciation argument against new is strongest for short holding periods (2–4 years), where you sell right at the steepest part of the curve.
What is the difference between a new car loan and a used car loan?
The products are structurally identical — both are secured loans using the vehicle as collateral. The differences are: (1) rate — new car loans average 8.99% vs used at 11.27%; (2) loan-to-value ratio — some lenders will finance 100% of a new car's drive-away price but only 80–90% of a used car's value; (3) vehicle age restrictions — used car loans have maximum age rules that new car loans obviously don't.
Are there loan restrictions based on how old the car is?
Yes. The standard restriction is that the car must be under 7 years old at the end of the loan term. A few lenders extend this to 12–15 years. For cars outside these limits, an unsecured personal loan is the only option — with no vehicle-specific security, but also no age restriction. Always check the lender's age policy before you make an offer on an older used vehicle.
Can I get pre-approved for a car loan before I find the car?
Yes, and for private sales it's almost essential. Pre-approval locks in your rate and loan ceiling, typically for 60–90 days, and lets you move on the right car the moment you find it. For dealer purchases, you can arrange finance through the dealer — but their in-house finance is often more expensive than a pre-approved offer from an independent lender. Compare first.
Compare Car Loans on LoanGorilla
LoanGorilla compares 40+ car loan lenders side by side — new, used, and green EV loans — including rates, fees, vehicle age rules, and loan-to-value limits. No obligation, no impact on your credit score to compare.
loangorilla.com.au is an Australian Credit Representative (ACR) of Access Lending Group, Australian Credit Licence 531308. Rates and information are current as of May 2026 and subject to change. This guide is general information only and does not constitute financial advice.
Run the numbers yourself
Plug your own figures into the relevant Australian car loan calculators before you sign anything:
- Car Loan Calculator
- Used Car Loan Calculator
- EV Loan Calculator
- Repayment Calculator
- Balloon Payment Calculator
- Trade-In Equity Calculator
Related car loan options
Compare current rates and lender lists for the car loan types most relevant to this guide:
- New Car Loans
- Used Car Loans
- Green Car Loans
- Private Sale Car Loans
- Secured Car Loans
- Trade-In Car Loans