How can I lookup police impounded and pink/yellow/green "stickered" status for a vehicle?

Unfortunately there is no database available for CarJam or the public to search regarding vehicle impounds or status/presence of green, yellow or pink stickers attached to vehicles.

If you have a specific question regarding Police involvement with a vehicle you should refer that question to your local police

Some other useful links:

https://www.nzta.govt.nz/vehicles/choosing-the-right-vehicle/choosing-and-operating-a-heavy-vehicle/identifying-defects/

https://vehicleinspection.nzta.govt.nz/virms/in-service-wof-and-cof/introduction/inspection-and-certification-process/duties-and-responsibilities