Car insurance in Australia

A plain-English guide to how car insurance works in Australia, the main types of cover, what drives the price, and how to compare policies in a way that actually makes sense. Useful whether you're buying cover for the first time, renewing an existing policy, or just trying to work out if you're paying too much.

Car insurance can feel like a maze of acronyms, fine print, and very similar-looking quotes. This page is designed to cut through that. By the end you'll understand what each type of cover does (and doesn't) include, what makes premiums move, and a simple framework for comparing policies side by side.

Throughout this guide we link to deeper explainers and to our comparison page if you want to start lining up options for your situation.

What is car insurance?

Car insurance is a contract between you and an insurer. You pay a premium — usually monthly or annually — and in return, the insurer agrees to cover certain costs if something goes wrong. Exactly what those costs are depends on the type of policy and what's in the Product Disclosure Statement (PDS).

In Australia there are four main types of car insurance:

• Compulsory Third Party (CTP) — also called a green slip in NSW. Required to register a vehicle. Covers injury claims to other people. Doesn't cover any vehicle damage.
• Third party property — covers damage your car causes to other people's property, including their vehicle.
• Third party fire and theft — third party property cover plus limited cover for your own car if it's stolen or damaged by fire.
• Comprehensive — the broadest common cover. Typically includes damage to your car (including from accidents, theft, fire, and certain weather events) plus damage your car causes to others.

Only CTP is mandatory. The other three are optional, and which one may suit you depends on things like the value of your car, how much you can comfortably pay out of pocket, and your appetite for risk.

Key things to understand

A few concepts come up over and over again when comparing car insurance. Getting your head around them once makes every quote easier to read.

• Premium — the price you pay for the policy. Quoted as monthly or annual, but paying annually can sometimes work out cheaper.
• Excess — the amount you contribute toward a claim before the insurer pays the rest. We unpack this in our guide on how car insurance excess works.
• Sum insured — the maximum the insurer will pay if your car is written off. This can be set as either an agreed value (a figure you and the insurer agree at the start) or a market value (calculated at the time of the claim). See our explainer on market value vs agreed value.
• Inclusions and exclusions — what's covered and what isn't. Two policies that look identical at first glance can have very different exclusions buried in the fine print.
• PDS and TMD — the Product Disclosure Statement spells out the full terms, and the Target Market Determination describes who the product is designed for. Both are worth reading. Our guide on how to read a PDS walks through the sections that matter most.
• Cooling-off period — most policies include a window (commonly 14–21 days) where you can cancel for a full refund if you change your mind, provided you haven't claimed.

How to compare car insurance options

Comparing policies properly takes a bit more than scanning a list of prices. A simple step-by- step approach can help you weigh apples against apples rather than apples against pears.

1. Decide which type of cover may suit your situation. If your car is older and worth less than a few thousand dollars, a third party policy might be enough; if it's newer or financed, comprehensive is often considered.
2. Get quotes that use the same inputs. Same vehicle, same drivers, same address, same excess. Without that, you're not really comparing.
3. Compare features, not just headline price. Hire car after an accident, choice of repairer, windscreen cover, and new-for-old replacement can all make a meaningful difference depending on what you value.
4. Check exclusions and excesses. Look for age-based excesses, claim-type excesses, and any conditions about who can drive the car.
5. Read the PDS and TMD. Especially the sections on what's not covered.

Our compare car insurance page walks through what to put side by side, and car insurance quotes covers what information you'll typically need to get a quote in the first place.

Common mistakes to avoid

A handful of patterns trip up a lot of people. None of them are catastrophic on their own, but collectively they can lead to nasty surprises at claim time.

• Choosing the cheapest policy without checking the exclusions. The savings may evaporate the first time you need to claim something the policy doesn't cover. Our guide to cheap car insurance covers what to watch for.
• Not declaring modifications, drivers, or business use. Anything not disclosed can give the insurer grounds to reduce or decline a claim.
• Picking the lowest excess by default. A low excess raises your premium — sometimes by more than you'd ever save in a typical claim cycle.
• Forgetting to update your insurer when things change. A new address, a new regular driver, or significantly different annual kilometres can all change what's considered fair pricing.
• Skipping the PDS. Even a quick skim of the exclusions section can save a lot of grief.

What affects your premium

Every insurer uses its own rating model, but most weigh broadly similar factors. Understanding them makes it easier to see why two quotes can differ so much for the same car.

• Driver age and history. Younger and less experienced drivers typically pay more, as do drivers with recent at-fault claims or licence demerits. We dig into this on the car insurance for young drivers page.
• Vehicle make, model and age. Cars that are expensive to repair, frequently stolen, or carry higher safety risk often attract higher premiums.
• Where you live and where the car is parked overnight. Postcode-level claim history feeds into pricing.
• How you use the vehicle. Annual kilometres, commuting distance, and whether it's used for business can all matter.
• Excess. Choosing a higher excess generally lowers the premium.
• Optional extras. Hire car cover, choice of repairer, no-claim discount protection, and similar add-ons each have a price.

For more on what shapes the headline number, see our pages on cheap car insurance and lowering your premium.

Browse all car insurance topics

The full set of plain-English car insurance pages, grouped by what you're trying to work out.

Australian car insurance providers

Plain-English overviews of 15 Australian car insurance brands — what each offers, who it may suit, and how it compares.

See the full reviews hub for more detail on each.

Head-to-head comparisons

Side-by-side comparisons of the most-asked-about pairings. None declare a winner — the right fit depends on your vehicle, location and what you value in an insurer.