Everyone insures their car, but the rules behind that simple act are wildly different depending on where you live. One of these six countries does not legally require car insurance at all. Another bundles it into your registration. And one has some of the highest premiums on earth. Here is how the systems really compare.
The New Zealand surprise: cover is optional
New Zealand is one of very few countries where car insurance is not legally required at all. The reason is a national scheme called ACC, which covers personal injury from accidents no matter who is at fault, funded through levies on registration and fuel. Because injury is already covered, there is no need for the compulsory injury insurance that most countries mandate. Most Kiwis still buy third party or comprehensive cover to protect against vehicle damage, but strictly speaking, they choose to.
Australia bundles injury cover into your rego
Australia takes a different route to the same idea. Compulsory third party insurance, which covers injury to people, is built into your vehicle registration, so you cannot register a car without it. Cover for damage to property and vehicles is separate and optional, bought on top. It means the injury side is universal and automatic, while the rest is up to you.
The United States: at fault, and expensive
Most American states run an at-fault system, where the driver responsible pays, and require liability insurance as a minimum. A handful of states use no-fault rules instead. Whatever the system, the headline is cost, American drivers pay some of the highest car insurance premiums in the world, enough to cancel out much of their famously cheap fuel. It is a reminder that a low pump price does not mean a cheap car to run.
The UK and Ireland: third party and the no-claims game
The United Kingdom and Ireland both require third party cover as a legal minimum, protecting other people and their property, with comprehensive cover optional on top. Both are known for the no-claims discount, a reward that builds up for every year you drive without claiming and can cut a premium substantially over time. Protecting that discount becomes a real financial asset for careful drivers.
Canada: it depends which province you are in
Canada has no single system. Some provinces run private insurance markets much like the United States, while others have public insurers and no-fault rules, where you deal with your own insurer regardless of blame. The result is that the cost and the rules of insuring the exact same car can change dramatically just by crossing a provincial border.
| Country | Legal minimum | Notable feature |
|---|---|---|
| New Zealand | None required by law | Injury covered by ACC, so insurance is optional |
| Australia | Compulsory third party (injury), via rego | Property cover is separate and optional |
| United States | Liability, in most states | Mostly at-fault; among the highest premiums anywhere |
| United Kingdom | Third party | Strong no-claims discount culture |
| Ireland | Third party | Similar to the UK, no-claims driven |
| Canada | Varies by province | Some provinces are public and no-fault |
What is the same everywhere
For all the differences, the things that push your premium up are remarkably consistent, the car, your age and experience, where you keep it, your mileage and your claims history. Wherever you are, the ways to pay less rhyme too. Our car insurance basics guide explains the cover types, and how to get cheaper insurance shows how to bring the price down.
Related
Figures are approximate and drawn from public price trackers and official sources, mostly 2025 to mid-2026 averages. Prices, taxes and incentives change often, always confirm the current position with a local source before making a decision.
