When comprehensive car insurance is worth paying for — and when it may not be
A renewal notice is a reminder to reassess, not just to pay
For many drivers, the email that says it’s time to renew car insurance is more chore than excitement. But it is also a prompt to make a decision that can have real financial consequences. Insurance is one of those products where it can be easy to set and forget — until premiums rise or circumstances change.
That reassessment matters even more in a period of higher prices. According to the Insurance Council of Australia, comprehensive car insurance costs increased by an average of 42 per cent between 2019 and 2024. An insurance expert at consumer group Choice, Jodi Bird, says costs grew by about another five per cent last year. With increases like that, paying for the same level of cover year after year can start to feel less automatic.
The key question is not whether comprehensive cover is “good” or “bad”. It is whether it is good value for your situation right now — taking into account what your car is worth today, what you could afford if something went wrong, and what the policy actually covers.
The three main types of optional car insurance
In Australia, drivers generally choose between three types of optional car insurance:
Third party property damage
Third party property damage, fire and theft
Comprehensive
Mr Bird describes comprehensive as the highest level of cover. By contrast, he says third party property damage “just covers damage to another person’s car”. The difference matters most when you consider the mismatch between what you drive and what you might hit. Mr Bird gives a simple illustration: if you are driving an older, low-value car and you crash into a high-value one, third party property damage should pay for the other person’s vehicle but not for yours.
That example captures the basic trade-off. Comprehensive cover is designed to protect your own vehicle as well as cover damage you cause to others. Third party options are cheaper but leave you exposed to the cost of repairing or replacing your own car after an incident.
Don’t confuse optional cover with compulsory third party insurance
It is also important to separate optional car insurance from compulsory third party (CTP) insurance. CTP covers injuries you have caused to people, but it does not cover damage to your car, anyone else’s car, or property. While CTP is compulsory, how it works varies between jurisdictions. In New South Wales it is known as a green slip, and in some states it is included as part of vehicle registration.
This distinction is crucial because some drivers assume “compulsory” insurance means they are broadly covered. In reality, CTP is about personal injury liability. The decision about protecting vehicles and property is made through the optional policies.
Why comprehensive is often treated as the default
Fei Huang, an associate professor in the School of Risk and Actuarial Studies at the University of Sydney Business School, says anecdotally she hears that people often opt for comprehensive insurance as the default. That can make sense for some drivers, especially those who want the reassurance of stronger protection. But Dr Huang also says it might not be worth it for everyone.
One reason comprehensive becomes the default is that it feels like the “safe” choice. Many people prefer the peace of mind of knowing that if something happens — even if it is their fault — their insurer may cover repairs or replacement. Yet peace of mind has a price, and that price can rise quickly over time.
As premiums increase, the question becomes more pointed: are you paying a premium that is proportionate to the value you are protecting?
Start with the value of your car today
Both Mr Bird and Dr Huang point to the same starting point: compare what your car is worth now with the cost of insuring it. Mr Bird says it can be fairly easy to over-insure your car, particularly because the cost of used cars comes down every year. If your vehicle’s value has fallen but your premium has risen, you may be paying more and more to protect less and less.
Dr Huang puts it plainly: if you have a very old, low-value vehicle, she would not recommend going to comprehensive immediately. The reason is not that comprehensive is inherently wrong, but that the economics can become hard to justify when the car’s value is low.
This is where a practical comparison helps. If the annual premium for comprehensive cover is a sizeable share of what the car is worth, you may decide that a less expensive policy — or a different configuration of cover — is more sensible.
When comprehensive cover may be worth it
Comprehensive insurance can be easier to justify when the potential financial shock of an accident would be difficult to absorb. Dr Huang says that if you have a high-value vehicle, you might want to opt for comprehensive to give you peace of mind, particularly if you cannot afford unexpected repairs or a replacement.
Comprehensive cover may also be more attractive if your car is central to your daily life. The more you rely on your vehicle, the more disruptive it can be if it is damaged and you are left to manage repairs out of pocket. While the details vary by policy, some comprehensive policies may include benefits such as car hire, towing, or roadside assistance. Those inclusions can matter to people who need to stay mobile.
However, it is not enough to assume those features exist. The decision should be based on what the specific policy includes and excludes, not on the label “comprehensive” alone.
When comprehensive cover may not stack up
Comprehensive insurance may be harder to justify when the car is older and worth less, particularly if the premium remains high. In that scenario, one approach is to look for a cheaper comprehensive policy or consider downgrading from comprehensive to a third-party option. Mr Bird says comparing the current value of your car with insurance costs can help you decide which path makes sense.
He also frames the decision in terms of opportunity cost. If you have a cheaper, older car, he suggests looking at where you can save money on insurance so you can put that money aside for the next car. In other words, instead of paying a high premium to protect a low-value asset, you may prefer to accept more risk and build savings.
This is not a universal rule. Some drivers may still prefer comprehensive cover for an older car, especially if they would struggle to cover even modest repair bills. But the point is that comprehensive should be a choice made deliberately, not automatically.
How much you drive can change the equation
When weighing up the cost of a policy, Dr Huang says to also consider how much you use your car. Insurance is not only about the value of the vehicle; it is also about how often you are exposed to situations where something could go wrong.
Drivers who use their cars frequently may feel the risk of accidents, minor damage, or other incidents more acutely. Those who drive less may view the risk differently. The right level of cover can depend on your personal comfort with risk as well as your financial ability to deal with an unexpected event.
Premiums, excess, and the levers you can pull
Comprehensive insurance is not a single fixed product. Even within comprehensive cover, the price can shift depending on settings and add-ons. Dr Huang says dropping “unnecessary add-ons” — such as expensive roadside assistance or cover for personal belongings — can decrease your premium and alter the equation. Another lever is the excess.
The excess is the amount you pay out of pocket when you make a claim. The premium is the amount you pay for insurance, whether yearly, monthly, or quarterly. Choosing a higher excess can reduce the premium, but it also means you carry more cost if you need to claim.
For some drivers, adjusting these settings is a way to keep comprehensive cover while making it more affordable. For others, the same exercise may reveal that even stripped-back comprehensive cover still does not represent good value compared with third-party options.
“Comprehensive” does not mean “everything”
A common misunderstanding is that comprehensive cover automatically pays for any problem involving your car. Dr Huang cautions that comprehensive cover “doesn’t necessarily cover everything”. Policies often exclude wear and tear and mechanical breakdowns. That means a comprehensive policy is not a substitute for maintenance, and it may not help with issues that arise from ageing parts or routine deterioration.
Because exclusions and limitations can materially affect what you are buying, Dr Huang says it is important to check the policy details carefully. MoneySmart also recommends comparing the exclusions and inclusions of different policies.
Examples mentioned include that some policies might not cover mechanical failure, storm damage, or vandalism (intentional damage). At the same time, some policies may offer inclusions such as free roadside assistance, free towing, and car hire. The practical takeaway is that two policies with similar prices — or even the same “type” of insurance — can deliver very different outcomes when you need to claim.
Service quality matters, even if it’s hard to measure upfront
Price is only one factor. Drivers may also want to consider the standard of service an insurer provides when something goes wrong. The challenge is that it can be difficult to gauge service quality unless you have already had an accident or made a claim.
Dr Huang recommends checking the policy for details, reading reviews, and asking about other people’s experiences. While no method is perfect, these steps can help you avoid focusing solely on the premium and overlooking how the insurer handles claims, communication, and support.
Be cautious about “loyalty” and no-claims bonuses
Another factor that can keep people in the same policy year after year is the belief that loyalty will be rewarded. Mr Bird says people can get unduly attached to their “loyalty bonus” or “no claims bonus”. While these may once have meant cheaper insurance, he says these days it can become a “loyalty penalty” because new customers often get a better deal.
The practical implication is straightforward: even if you have been with the same insurer for a long time, it may still be worth comparing alternatives at renewal time. Loyalty alone is not a guarantee of value.
Shopping around can be one of the biggest savings
On the question of what to do next, both Mr Bird and Dr Huang advocate shopping around. Dr Huang’s advice is direct: actively compare different providers’ premiums and then change providers. She says doing so can potentially save you several hundred dollars.
Comparing policies is also a way to test whether comprehensive cover remains worthwhile. If you discover you can get a cheaper comprehensive policy with suitable inclusions, you may be able to keep the cover you want at a more manageable cost. If comprehensive remains expensive across the market, a third-party policy could become more appealing — especially for older vehicles.
A simple decision framework to use at renewal time
To make the choice less daunting, it can help to approach renewal as a structured comparison rather than a single yes-or-no decision. Based on the guidance raised by MoneySmart and the experts quoted, consider working through the following:
Estimate what your car is worth today, not what you paid for it.
Compare that value with the annual premium you are being asked to pay.
Ask whether you could afford repairs or replacement if your car were damaged and you were not covered for your own vehicle.
Consider how much you drive and how reliant you are on your car day to day.
Review add-ons and decide whether any are unnecessary for your situation.
Check the excess and decide whether a higher excess is a manageable trade-off for a lower premium.
Read the exclusions and limitations carefully, including what is not covered.
Compare multiple policies and consider switching if the value is better elsewhere.
This approach does not guarantee a single “correct” answer. But it does help ensure the policy you choose reflects your current needs, rather than habits formed years earlier.
The bottom line: match the cover to the risk you can afford
Comprehensive car insurance can be worth paying for when you have a higher-value vehicle or when an unexpected repair or replacement would be financially difficult. It can also be a deliberate choice for drivers who want maximum peace of mind, provided they understand the exclusions and the true scope of cover.
On the other hand, comprehensive cover may be less compelling for very old, low-value cars, particularly when premiums have risen sharply. In those cases, a cheaper comprehensive policy, a higher excess, fewer add-ons, or a shift to third-party cover may better align with the value of the vehicle and your budget.
Whatever you choose, the consistent message from the experts is to compare policies regularly and focus on what you are actually getting for the money — not just what you have always bought.
This is general information only. You should consider obtaining independent professional advice in relation to your particular circumstances.