The Driver Privacy Protection Act, at 18 U.S.C. § 2721, limits the disclosure of personal information held in state motor vehicle records. It was passed after that information was used to locate and harm individuals.
The law defines a closed list of permissible uses, covering matters such as vehicle safety recalls, insurance, legal proceedings and licensed investigators acting for those purposes. General curiosity about who owns a car is not among them.
This is why a legitimate plate or VIN lookup returns information about the vehicle and not about the person who owns it. Any service promising to name a current owner is either operating outside the law or not delivering what it advertises.
Why it matters
It sets the boundary of what any lookup service can legally provide, and explains why the honest answer to "who owns this car" is that we cannot tell you.
How to check it
Judge a provider by whether it is straightforward about this limit rather than by how much it promises.
Does this apply to the car you are looking at?
Run the VIN or plate and see what is actually on record.
Related terms
Definitions are general guidance, not legal advice. Title rules, total loss thresholds and inspection requirements are set by each state and change over time, so confirm the position with the motor vehicle agency for the state the vehicle is titled in before relying on it.