Rego to VIN: how to find a VIN number from a number plate
Most used-car ads show a number plate and nothing else, but every serious check runs on the VIN. This guide explains which states will give you the VIN for free, which will not, and what to do when they will not. Our rego check converts the plate for you and runs the PPSR search.
Updated 20 October 2026
Why you need the VIN and not just the plate
The PPSR motor vehicle search accepts a VIN, a chassis number or a manufacturer's number. It does not accept a number plate, and it cannot be searched by engine number either. The PPSR's own "registration number" field refers to a PPSR registration, not a rego plate.
Plates change. A car can be re-plated when it moves state, when personalised plates are fitted or when the plates are stolen. The VIN stays with the body for life, which is why the national registers key on it.
So the task for a buyer with a plate is always the same. Turn the plate into a VIN, then run the $2 search at ppsr.gov.au, or use a plate-based check that does both steps.
What each state's free rego check shows
Every state and territory offers a free registration check by plate. They differ sharply on whether they show the VIN.
| State | VIN on the free check | Other fields shown |
|---|---|---|
| Victoria | Full 17 characters | Engine number, make, colour, body type, year, status and expiry; searchable by plate, VIN or chassis number |
| Queensland | Usually shown in full | Status, expiry, make, model, body, purpose of use, CTP insurer; searchable by plate or VIN |
| New South Wales | Last four characters only | Status, expiry, make, model, variant, colour, CTP insurer, up to three yearly odometer readings |
| South Australia | Last four digits only | Make, body, colour, expiry, CTP insurer, general stolen or written-off warning |
| Western Australia | Partially masked | Licence status and expiry, make, model, body |
| Tasmania | None | Registered in Tasmania, expiry, CTP insurer, model and body |
| ACT | None | Status, expiry, next inspection date, basic description |
| Northern Territory | None | Status, expiry, inspection date, make, model, body |
Why only Victoria prints the full VIN
Service Victoria lists the full VIN among the fields its check returns, and it is the only state whose published field list does. Queensland's published list does not mention the VIN. Plate searches on the Transport and Main Roads check generally display one, though, so in practice Queensland buyers usually get it too.
The other states have moved the other way. New South Wales masks the VIN to its last four characters and South Australia does the same. Western Australia changed its check during 2026 so that part of the VIN is replaced with hash marks. Tasmania, the ACT and the Northern Territory never showed it.
The reason given is privacy and theft prevention: a full VIN with a plate makes identity cloning easier. The effect for buyers is that a plate from an ad in most states cannot be turned into a VIN for free.
How to get the VIN from the seller
The simplest route is to ask. The VIN is on the registration certificate, the renewal notice and the compliance plate. A seller who will not send a photo of the rego papers before you visit is telling you something.
When you inspect the car, read the VIN from the windscreen and the compliance plate yourself and compare it with the papers. Then run the PPSR search on the spot. The $2 search at ppsr.gov.au works from a phone.
How a plate-based check converts rego to VIN
Services that accept a plate and state do the conversion before they touch the PPSR. They send the plate to a vehicle-data lookup, receive the VIN and a description of the vehicle, and run the PPSR search on that VIN. The certificate you receive is the standard PPSR certificate for the VIN found.
The weak point is the match. If the lookup returns the wrong vehicle, the certificate describes the wrong car. A sound service shows the make, model and year it found before taking payment, so you can confirm it is the car in the ad. It should also re-run the search free if the plate was mistyped.
The conversion is also why plate-based checks cost more than $2. You are paying for the lookup and the reading of the result, with the government fee inside the price.
Checking the VIN matches the car
Whichever way you obtained the VIN, confirm it against the physical car before you rely on the certificate. The NEVDIS block on the certificate shows the make, model, colour and plate held for that VIN. If those do not match the car, stop.
Also compare the VIN in two places on the car. A windscreen tag that disagrees with the compliance plate is a sign of a replaced identity, which no plate lookup will reveal.
Our rego check accepts the plate and state, shows you the car it found before you pay, and returns the PPSR certificate from $12.95 including the $2 government fee.
Rego check by state
Questions people ask
Can I search the PPSR by rego number?
No. The PPSR accepts a VIN, chassis number or manufacturer's number only. Any service that searches by plate converts it to a VIN first.
Is there a free rego-to-VIN lookup?
For Victorian cars, yes: Service Victoria's free rego check prints the full VIN. Queensland's check usually shows it. For other states the free checks show part of the VIN or none, so you need the seller or a paid plate-based check.
Why does the NSW rego check only show the last four characters?
Service NSW masks the VIN on its free check and shows the tail only. Even its paid vehicle history report does not print the full VIN. The stated purpose is to make vehicle identity cloning harder.
Does the Queensland rego check show the full VIN?
Usually. Queensland's published field list does not mention the VIN, but plate searches on the Transport and Main Roads check generally display it. It is the second most reliable free source after Victoria.
Can I use the last four characters of the VIN for anything?
They are useful for confirming a VIN the seller gives you matches the registered vehicle. They cannot be used to search the PPSR, which needs all 17 characters.
What if the car is unregistered?
The free state checks only return currently or recently registered vehicles, so a plate lookup fails. Read the VIN from the compliance plate or windscreen and search the PPSR on that.
Related
- Rego check for every state (free) and what it doesn't tell you
- VIN check Australia: decode the VIN free, then check finance and write-offs
- PPSR check by rego or VIN, $12.95 including the $2 government certificate
- Where is the VIN number on a car, and how do you check it?
- Free VIN check: validate and decode any VIN
Ready to check a car?
Rego or VIN. You see the make and model before you pay. From $12.95 including the $2.00 government fee. Or search the PPSR yourself for $2 at ppsr.gov.au.