There are some steps you can take to protect yourself when buying privately:
Check that the vehicle has a current warrant of fitness (WOF). Private sellers have the option of selling a vehicle without a warrant, provided the car is clearly identified for sale “as is, where is”.
Check with the police to make sure the car isn’t registered as stolen. Ask the seller for proof of identity.
Check whether there is any money owing on the vehicle. Check the Personal Properties Securities Register (PPSR) to see if there is any security interest registered against the vehicle. This can be done for a small fee by registering to check online at www.ppsr.companiesoffice.govt.nz/ or texting the VIN and/or chassis number to 3463 (FIND).
Get a mechanical check done on the vehicle. See “Where to go for more support” at the end of this page.