Current vehicles subject to the recall are identified by VIN numbers. We were contacted by Honda about our car after they located our address through using our VIN number with Qld Transport (in cases of Safety Recalls the Privacy Laws allow for such disclosure). If a car is no longer registered then the Transport Departments only have the last know registered owner but when a car is sent to the Wreckers they report those VIN numbers to their State's Transport Dept, Insurance Companies also notify of vehicles that are deemed unrepairable. This data is then passed to the Fed Govt who maintain the "Personal Property Securities Register" (PPSR). This site is found at https://www.ppsr.gov.au/ and if you pay the required fees you can search for as many VIN numbers you like.
The codes for written off vehicles contained in the Federal Govt database are as follows:
D - Dismantled - Legitimate removal of components for use as parts.
F - Fire - Damage caused by combustion.
H - Hail - Damage caused by hail stones.
I - Impact - Collision of some type with an object, for example another vehicle, tree or pole.
M - Malicious/Vandalism/Stripped - Intentional damage, for example broken door locks, glass window or windows, paint, scratched or stripped of all or a combination of interior and exterior body parts.
W - Water - Damage caused by water (fresh or salt) such as a storm, river or flood.
The one the wreckers use is D