To compare car insurance properly, you have to look past the headline premium and weigh up the actual cover: how your car is valued, what excess you would pay at claim time, and what is included or left out. The cheapest quote on screen is often the one that quietly trims the protections you would miss most when something goes wrong.
That is the whole game, really. Two policies can carry near identical price tags and behave completely differently the day you reverse into a pole. Here is how to read past the marketing and compare on the things that decide whether a claim leaves you whole or out of pocket.
Start with how your car is valued
The single biggest difference between two comprehensive policies is often the valuation method, and it changes what you get paid if the car is written off or stolen.
Agreed value sets a fixed sum upfront, locked in for the policy year. You know exactly what you would receive, which suits people who want certainty or who have a car they would struggle to replace cheaply.
Market value pays what the car was worth at the time of the claim, as the insurer assesses it. Premiums are often a little lower, but the payout can come in under what you expected, especially in a year where used car prices have moved. Neither is automatically better. Just make sure you know which one a quote is giving you before you compare the prices, because comparing an agreed value policy against a market value one on premium alone is not a fair fight.
Read the excess, not just the premium
Excess is the amount you pay toward a claim before the insurer pays the rest, and it is the lever insurers love to use to make a premium look sharp.
A higher excess lowers your premium. It also raises your out of pocket cost on the day you actually claim, which is the day you can least afford a surprise. There can also be more than one excess stacked on a single claim:
| Excess type | When it applies |
|---|---|
| Standard (basic) excess | On most claims, as the default |
| Age or inexperienced driver excess | When a young or newly licensed driver was at the wheel |
| Voluntary excess | An amount you chose to add to lower your premium |
| Unnamed driver excess | When someone not listed on the policy was driving |
These can combine. A claim involving a 19 year old on a policy with a chunky voluntary excess might attract two or three at once. When you compare quotes, add up the realistic worst case excess for your household, not just the standard figure in the summary.
Compare the inclusions and the exclusions
Once valuation and excess are squared away, the inclusions are where policies genuinely differ. Some come standard, some are optional extras, and some are simply absent. Worth checking:
- Choice of repairer. Can you pick your own mechanic, or must you use the insurer’s network? This matters more than people expect.
- Hire car after a claim. Is one included, for how long, and is it only after theft or also after an accident?
- Windscreen and glass. Some policies include one no excess windscreen claim a year, others charge an excess every time.
- New car replacement. If your near new car is written off, do you get a brand new one or just its depreciated value?
- Exclusions. Read these closely: flood, modifications you have not declared, driving for rideshare, or letting an excluded driver use the car can all void a claim.
A policy that costs a fraction more but lets you choose your own repairer and throws in a hire car can be far better value than the cheapest line on the page. If you want a fuller breakdown of how the cover levels themselves stack up, our guide to car insurance in Australia walks through each one.
Compare the cover first and the price second, because the price means nothing until you know exactly what it is buying.
Use comparison sites, but do not stop there
Comparison websites are a fine starting point and a genuine time saver. They are not the whole picture.
No comparison site lists every insurer. Several large brands sit out the panels entirely, and the ones that do appear can be ranked partly by commercial arrangements rather than pure value to you. That does not make the sites useless, it just means the order on screen is not gospel. The fix is simple: use a comparison tool to build a shortlist, then get a couple of direct quotes from insurers you have heard good things about, including any that the aggregators skip. Running a quick compare car insurance quotes search alongside two direct quotes usually surfaces the real spread of prices in ten minutes.
If you are hunting purely on price, our plain-English insurance guide is a useful companion, though cheapest and best are not always the same address.
Re-quote every renewal
Here is the habit that saves the most money over time, and almost nobody does it: re-quote at every renewal.
Loyalty tends to cost you. Renewal notices often creep up year on year, and the price offered to a brand new customer for the same cover can be lower than the one quietly mailed to a long standing one. So when the renewal lands, treat it as a fresh quote rather than a bill to pay on autopilot. Re-run your comparison, get a direct quote or two, and at the very least ring your current insurer with the better numbers in hand. Many will sharpen the price to keep you.
This is general information only and not personal financial advice. Premiums, excesses, inclusions and the insurers on any comparison panel change often, so confirm the details and the current price with the insurer or the official product disclosure statement before you decide. Figures and rules in this article were last checked June 2026.
The bottom line
Comparing car insurance well is less about chasing the lowest number and more about lining policies up on the things that matter: how the car is valued, what excess you would really pay, and what the cover includes and excludes. Use comparison sites to build a shortlist, add a couple of direct quotes, and re-quote every single renewal so loyalty does not quietly cost you. Do that, and the policy you land on will be cheaper and better, not just cheaper.