Picture walking onto the lot to buy a $35,000 car. On numbers like these, three years later you might have handed over closer to $55,000 once you count everything — while the car is now worth maybe $22,000. Those figures are just an illustration; the exact gap depends on the car. But the shape is always the same: the sticker price is the start of the conversation, not the whole bill.
DriveTruth doesn't sell cars, loans or leases, so we've got no reason to make that number look prettier than it is. Here's what actually makes up the true cost of owning a car in Australia — and how to size it up before you sign anything.
The five costs hiding behind the price tag
Ownership cost is really five separate bills arriving at different times. Some hit once, some hit monthly, and the biggest one you never actually see leave your account.
- Depreciation — the value the car quietly loses while it sits in your driveway. For most new cars this is the single largest cost of ownership, and it's steepest in the first few years.
- Finance — if you borrow, the interest (and any balloon payment) is money on top of the purchase price. Longer terms mean smaller repayments but more total interest.
- Fuel or charging — the cost that scales with how far you drive, and the one that swings most with fuel prices or your electricity plan.
- Rego, insurance and CTP — recurring every year, and they vary a lot by state and by driver.
- Servicing, tyres and repairs — predictable while under warranty, less so afterwards.
Add them together across the years you'll actually keep the car and you get the real number. Our total cost of ownership calculator does exactly that — depreciation, finance and running costs in one figure — so you can compare two cars on what they'll really cost you, not on their ads.
Depreciation: the cost you can't see and can't skip
Every other cost you can feel — you swipe a card, you pay a bill. Depreciation is silent. The car is worth a little less each month whether you drive it or not, and you only ever feel it on the day you sell or trade.
It's also the cost with the widest spread between vehicles. Two cars with the same drive-away price can differ by thousands in what they're worth three years on, depending on the make, demand and how the model ages. This is why a slightly cheaper car can end up costing you more, and a pricier one can be the smarter buy. Resale value is a running cost — treat it like one.
New versus used changes the maths
Buy used and someone else has already absorbed the sharpest depreciation drop for you. You may pay more in repairs later, but you skip the steepest part of the curve. Neither is automatically 'better' — it depends on how long you'll keep the car and how many kilometres you'll do.
Fuel is where the daily reality lives
For a lot of drivers, fuel is the cost they underestimate most, because it drips out a tank at a time. A car that drinks a couple of extra litres per 100km doesn't feel expensive at the pump — but over years of commuting, it quietly adds up to a lot.
Plug your real weekly distance into the fuel cost calculator to see the annual figure instead of the per-tank one. And if you're weighing up an electric car, the EV vs petrol comparison shows how charging costs stack against the bowser over the years you'd own it — often the deciding factor once servicing is added in.
Running Costs (TCO) Calculator
True 5-year cost of ownership: depreciation, fuel/charging, insurance, rego, servicing, finance.
If you salary-package through work, a novated lease is another way to finance the same car, and it can genuinely lower the cost through pre-tax payments — particularly on eligible EVs. But the 'saving' a lease provider quotes is often flattering: it can lean on optimistic running-cost estimates and gloss over the residual you still owe at the end. Compare the real net cost against a plain car loan with the novated lease calculator, and confirm the current FBT and residual rules with the ATO before you count on any discount.
The one-off costs at purchase
Before the running costs even start, there's the on-road build-up: stamp duty, registration, plates and dealer delivery. These vary by state and can add a meaningful chunk to the advertised price.
- Stamp duty and rego differ across all eight states and territories — sometimes enough to matter. Check yours with the stamp duty and rego calculator.
- The drive-away price calculator builds up the full on-road figure so there are no surprises on the invoice.
- Above a certain price, Luxury Car Tax can apply — the threshold changes each year, so do a quick check with the LCT threshold tool if you're looking at the pricier end.
So what should you actually do?
Before you fall for a sticker price, do the boring thing that saves the most money: add up the whole ownership cost over the years you'll keep the car, and compare it against the alternatives. A car that looks dearer today can be cheaper to own, and the reverse is just as common.
EV vs Petrol Calculator
Real running cost of electric vs petrol/diesel: charging, fuel, servicing, km.
Frequently asked questions
What's the single biggest cost of owning a car?
For most new cars in Australia, it's depreciation — the value the car loses over time — not fuel or finance. It's easy to overlook because you never see it leave your account; you only feel it when you sell or trade. That's why comparing cars on resale value matters as much as comparing them on price. A total cost of ownership calculator folds depreciation in with everything else so you see the full picture.
How do I work out the true cost of a specific car?
Add together depreciation, finance interest, fuel or charging, rego and insurance, and servicing across the number of years you'll actually keep it. Rather than guessing, use the running costs calculator — it combines all of these into one figure so you can compare two cars fairly instead of on their advertised prices alone.
Is it cheaper to buy new or used?
It depends on how long you'll keep the car and how far you drive. Buying used means someone else has absorbed the steepest early depreciation, but you may face more repairs down the track. Neither is automatically cheaper — run both through a total cost of ownership calculator over your expected ownership period to see which actually wins for your situation.
Why is a low monthly repayment misleading?
A small monthly or weekly figure usually comes from stretching the loan over a longer term or adding a balloon payment at the end. Both lower the repayment but raise the total interest you pay — sometimes by thousands. Always ask for the total cost of the finance, not just the repayment, and check it yourself with a car loan calculator. The same caution applies to a novated lease: compare its true net cost against a plain loan, and confirm the current FBT rules with the ATO rather than trusting the headline saving.
General information only — not financial, tax or legal advice. Figures change; confirm with the ATO, your state revenue office and a licensed adviser, and use the calculators for your own numbers.