Comprehensive vs Third Party Car Insurance: What Each Cover Actually Includes
Beyond compulsory CTP, Australian drivers choose between three optional levels of car insurance. This guide sets out exactly what each covers and excludes, the agreed-vs-market-value decision, and which extras are worth having.
What's the difference between comprehensive and third party?
Third party cover protects other people's property from you. Comprehensive protects your car as well — from collision, fire, theft, vandalism and weather. Fire & theft is the halfway house: third party cover plus your own car against fire and theft only.
What does third party property damage cover?
Your legal liability for damage your car causes to other people's property — their car, fence, house or business. Many policies add limited uninsured-motorist cover (typically capped around $3,000–$5,000) if an uninsured at-fault driver hits you. It does not otherwise cover your own car, or anyone's injuries.
This is the pragmatic choice for older, lower-value cars where comprehensive premiums are hard to justify against the car's worth — but where hitting a luxury car or a shopfront could still cost tens or hundreds of thousands. Financial counsellors and consumer groups widely recommend it as the sensible minimum above CTP. Canstar compares third party policies, including the uninsured-motorist caps, which vary by insurer — check the PDS.
What does third party fire & theft cover?
Everything third party property damage covers, plus loss or damage to your own car from fire (accidental or malicious) and theft or attempted theft. It does not cover accident damage to your own car — hit a pole or another car and your repairs are on you.
It suits moderate-value cars where the big fear is total loss to theft or fire rather than crash repairs. Worth checking before you decide: theft is not a rare event here — ABS Recorded Crime – Victims counted 66,625 motor vehicle theft victims in 2025, up 2% and the highest since 2008. Also read the PDS definitions of "fire" and "theft" plus any security requirements (immobiliser, parking) your insurer imposes.
What does comprehensive car insurance cover?
Damage to your own car from collision, fire, theft, malicious damage, hail, storm and flood — plus liability for others' property. Typical extras: towing, hire car after theft, limited contents cover, emergency accommodation, lock re-keying, child-seat replacement, and new-for-old replacement for cars usually under 2–3 years old.
Comprehensive is the standard choice for new, financed or high-value cars, and for anyone who couldn't absorb the cost of replacing their car out of pocket. Common benefits worth comparing line by line:
- New car replacement — a brand-new same-model car if a near-new vehicle (typically under 2–3 years or a km cap) is written off.
- Hire car — after theft is often standard; after an at-fault accident is usually an optional extra.
- Windscreen cover — excess-free glass repair as an add-on; cost-effective if you cop stone chips regularly.
- Personal effects — belongings stolen from the car, usually sub-limited to around $500–$1,000, with high-value items excluded (they belong on home contents cover).
- Choice of repairer — some policies let you pick your own workshop; others mandate their network with a lifetime repair guarantee.
What comprehensive doesn't cover
Wear and tear and mechanical breakdown; drink or drug driving; racing; unlicensed drivers; pre-existing damage; undeclared modifications; unroadworthy vehicles; deliberate damage; and use outside what you declared (private policies don't cover ride-share or deliveries). Your excess applies to most claims. The PDS is the final word — Choice's policy checklist is a good companion while reading one.
Agreed value vs market value
Agreed value fixes the write-off payout when the policy starts — certainty, slightly higher premium, revised down each renewal as the car ages. Market value pays what the car would have fetched just before the loss — cheaper, but the payout shrinks with depreciation. Newer cars generally suit agreed value; older cars, market value.
Compare the Market's explainer and Moneysmart's choosing guide go deeper on this decision.
Which level of cover should I choose?
Rule of thumb: if you couldn't comfortably pay to replace your car tomorrow, get comprehensive. If the car's value is low but your liability risk isn't, third party property damage is the floor. Compare on inclusions, excesses and claims reputation — never on premium alone.
When comparing, look past the price at: the excess structure (including age and unlisted-driver excesses), no-claims bonus protection, choice of repairer, hire car terms, and the insurer's claims-handling reputation — ProductReview, Canstar's ratings and Finder's reviews aggregate real customer experiences. Always click through and read the PDS before buying — comparison sites don't show every insurer or every term. The Insurance Council of Australia's consumer hub covers your rights and obligations, including the duty of disclosure (see your obligations as a policyholder).
One EV-era note: electric vehicles usually cost more to insure comprehensively — higher purchase price, expensive battery packs and specialist repairs. Some insurers now offer EV-specific policies; damage from battery or mechanical faults themselves generally isn't covered, and battery cover is the most misunderstood part of an EV policy. We cover it in full in electric vehicle insurance.
How to read a Product Disclosure Statement
The PDS is the contract; the marketing page is not. Read four sections before anything else: what's covered, what's excluded, the excesses that apply, and your duty of disclosure. If you read nothing else, read the exclusions — that's where the surprises are.
Australian insurers must give you a PDS before you buy. It's long, but it's navigable if you go straight to the parts that decide claims:
- General exclusions. The list of circumstances where nothing is paid regardless of cover level. Read this first — it's short and it's decisive.
- Definitions. "Flood", "market value", "accident", "immediate family" and "business use" mean what the PDS says they mean, not what you assume.
- Excesses. Every excess that could apply, and whether they stack.
- Limits and sub-limits. Personal effects, trailer cover, emergency accommodation, hire car duration — each has a cap.
- Conditions. What you must do to keep cover valid: reasonable care, notifying changes, not admitting liability, securing the vehicle.
- Cooling-off period. Normally 14 days to cancel for a full refund if you haven't claimed.
What comprehensive typically includes as standard
Standard inclusions vary between insurers, but most comprehensive policies carry some version of these. Confirm each one rather than assuming:
- Accidental damage to your vehicle, whether you're at fault or not
- Damage you cause to other people's vehicles and property (third party liability, commonly to a limit of $20 million or more)
- Fire, theft and attempted theft
- Storm, hail, flood and other weather events
- Malicious damage and vandalism
- Towing and storage after an incident
- Emergency repairs, transport and accommodation away from home, to a limit
- Personal effects in the vehicle, to a modest sub-limit
- Replacement keys and locks after theft
- Child seat and pram replacement
- New-for-old replacement on a near-new vehicle, usually within the first two to three years
- Trailer or caravan cover while attached, to a limit
Exclusions that appear on nearly every policy
Almost every Australian motor policy excludes: wear and tear and mechanical failure, driving unlicensed or over the alcohol limit, deliberate damage, undeclared business or rideshare use, undeclared modifications, driving an unroadworthy vehicle, racing, and loss while the vehicle is being used illegally.
- Wear, tear, rust and mechanical or electrical failure. Insurance covers sudden events, not the car getting older. Tyre damage from normal use sits here too.
- Driving under the influence, unlicensed, or refusing a test. A refusal is generally treated the same as a positive result.
- Deliberate or reckless damage by you or someone acting with your consent.
- Undeclared use. Business use, deliveries and rideshare on a private-use policy.
- Undeclared drivers and modifications. Both are disclosure failures.
- Unroadworthy or unregistered vehicles. Bald tyres and an expired rego can both be enough.
- Racing, track days and competitive events, including "non-competitive" track sessions on most wordings.
- Consequential loss. Lost income because you couldn't work without the car isn't covered by a motor policy.
- Damage outside Australia, except in narrow specified circumstances.
Uninsured motorist cover
Many third party property damage policies include a limited benefit covering damage to your car caused by an identified, uninsured at-fault driver — typically capped somewhere in the low thousands. It's a genuine safety net on the cheapest cover level, but it requires you to identify the other driver, and the cap will not replace a modern vehicle. It isn't a substitute for comprehensive; it's a partial cushion.
The theft gap on third party property damage
The most common mismatch we see is someone buying third party property damage believing it covers theft. It doesn't. If theft is your principal concern — a high-theft postcode, street parking, a commonly-stolen model — third party fire & theft is the minimum sensible level, and comprehensive is the complete one. What actually reduces the odds of needing either is covered in our guide to car theft and vehicle security. For a Brisbane perspective on the property-security side of that, security installer Defensor deals with the residential end of the problem daily.
Frequently asked questions
What is the difference between comprehensive and third party car insurance?
Third party property damage covers damage your car causes to other people's property only. Comprehensive covers that too, plus damage to your own car from collision, fire, theft, vandalism, hail, storm and flood. Third party fire and theft sits in between, adding fire and theft cover for your own car.
Does third party insurance cover my own car?
Generally no. The one common exception: many third party property damage policies include limited cover — typically capped around $3,000 to $5,000 — for damage to your car caused by an at-fault uninsured driver. Otherwise, damage to your own car needs comprehensive cover.
What does comprehensive car insurance not cover?
Common exclusions include general wear and tear and mechanical breakdown, driving under the influence of alcohol or drugs, racing, unlicensed drivers, undeclared modifications, pre-existing damage, and operating an unroadworthy vehicle. The excess also applies to most claims.
Is third party fire and theft worth it?
It suits moderate-value cars where the owner's main worry is losing the car entirely to theft or fire, without paying comprehensive premiums for collision cover. Check theft rates in your area and compare the price gap to comprehensive before deciding.