The cheapest car to own is rarely the cheapest car to buy. It’s the one that doesn’t keep visiting the workshop. Two cars with the same sticker price can cost wildly different amounts over five years, and the gap comes down almost entirely to reliability and the price of parts. Here’s what tends to last, what tends to drain your wallet, and how to tell when a car has crossed from one camp to the other.
Which used cars are the most reliable?
In owner-reliability surveys and in the day-to-day experience of Australian workshops, Toyota and Lexus consistently sit at the top, with Mazda, Honda, Subaru, Suzuki, Hyundai, Kia and Mitsubishi close behind. The familiar names earn their reputation: a Corolla, Camry, RAV4, Hilux or LandCruiser, or a Mazda3 or CX-5, will routinely run past 200,000 km with nothing more than regular servicing.
The reason is unglamorous. These brands favour simpler, proven engineering, and their parts are cheap and everywhere, so when something does need doing, it’s quick and affordable. There’s a resale dividend too — a well-kept Toyota or Lexus can hold around 70% of its value after five years, which is the other half of what “cheap to own” really means.
Which cars get expensive once they’re older?
European luxury and performance models tend to have the highest repair bills and more frequent faults as they age — Land Rover and Range Rover in particular, along with Porsche and out-of-warranty BMW, Audi and Mercedes-Benz. Land Rover routinely lands at or near the bottom of reliability rankings, and premium German and British marques generally cost more to fix because the parts are dearer and the labour is specialist.
This isn’t an argument that these are bad cars — a well-maintained example, serviced properly by an owner who budgets for it, can be a pleasure. The trap is the cheap one: a high-kilometre luxury car advertised at a tempting price is cheap for a reason, and the saving at purchase is often erased by the first major repair.
Why does this matter when the car gets old?
Every car eventually reaches a point where a year of repairs costs more than the car is worth. Reliable, cheap-to-fix models reach it late and gently; money-pit models reach it early and steeply. Knowing which kind you own tells you roughly how much road you have left before the economics turn — and it’s why the same advice doesn’t fit every car.
How to tell your car has become a money pit
The signal isn’t one big bill — it’s the rhythm of them. Repairs arriving every few months, each one a different system, a mechanic increasingly saying “while we’re in there,” parts on back-order, and a resale value already drifting toward scrap. When fixing the car costs more each year than the car would sell for, it has quietly stopped being an asset and become a liability you’re subsidising.
A Canberra footnote: cold starts and frosty mornings are unkind to tired batteries, cooling systems and worn engines, so winter is often the season an older car finally gives up. If yours is on the edge, that first hard frost tends to be the deciding vote.
When it’s time to move on
Once a car tips from asset to liability, the move is to get its remaining value out rather than keep feeding it. If it still runs and there’s genuine demand, sell it running — that almost always nets the most. If it’s past that point, a cash-for-cars service in Canberra will collect it for free and pay you for the metal and salvageable parts. The full decision, with the one calculation that settles most cases, is in our guide on whether to repair or scrap a car.
Frequently asked questions
What’s the most reliable used car in Australia? There’s no single answer, but Toyota and Lexus models top reliability surveys year after year, with Mazda, Honda and Subaru close behind. For lowest running costs, the mainstream Japanese brands are hard to beat.
Are European luxury cars worth buying used? They can be if they’ve been properly maintained and you’ve budgeted for higher repair and parts costs. The risk is buying a cheap, out-of-warranty example with deferred maintenance, which is where the big bills hide.
At what point does a car become a money pit? When annual repair costs consistently exceed what the car is worth, and the failures keep coming from different systems. That point arrives much sooner for high-km luxury cars than for reliable mainstream ones.
Do reliable cars sell for more? Yes. Reliability drives resale, which is why a well-kept Toyota or Lexus holds its value far better than most rivals — and why “cheap to buy” and “cheap to own” are often opposites.