MIAFTR was developed to help monitor vehicles written off for insurance purposes, trace and recover stolen vehicles and to detect fraud.
PNC markers show that a vehicle has been stolen, but not the details of any categories that have been assigned to a vehicle following an incident.
With PNC, stolen vehicle markers only remain for six years, regardless of whether a vehicle has been found. With MIAFTR, vehicle category markers remain forever. It's about a vehicle (not an individual) and therefore doesn't fall under GDPR.