What you can find using a vehicle registration number
A vehicle registration number — also called a license plate, registration plate, or VIN (Vehicle Identification Number) — is a unique identifier that connects a car to its owner and history. Using this number, you can find information about the vehicle's registered owner, title status, accident history, service records, and whether it has outstanding liens or recalls.
The type of information available depends on which database or service you use and what state the vehicle is registered in. Some searches are free and public; others require a fee or are restricted to specific purposes like insurance claims or law enforcement.
Understanding what each search method reveals — and what it costs — helps you choose the right tool for your situation, whether you are buying a used car, checking on a vehicle involved in an accident, or verifying ownership.
Key Takeaways
- State Department of Motor Vehicles (DMV) records show the registered owner, title status, and whether the vehicle has liens, but access is restricted and varies by state.
- Free public databases like the National Highway Traffic Safety Administration (NHTSA) database show recall information and some safety data, but not ownership details.
- Third-party vehicle history services (Carfax, AutoCheck, NICB) charge a fee and compile accident, title, and service records from insurance companies and repair shops.
- VIN decoders reveal the vehicle's make, model, year, and manufacturing details, but do not show ownership or history.
- Some searches require a legitimate purpose — insurance, legal proceedings, or law enforcement — and unauthorized access to DMV records can result in fines or criminal charges.
State DMV records: ownership and title information
The most authoritative source for vehicle ownership is your state's Department of Motor Vehicles. DMV records include the registered owner's name and address, whether the title is clear or has liens against it, and whether the vehicle is marked as salvage, flood-damaged, or stolen.
Access to DMV records is restricted. You cannot straightforward call or visit your local DMV and request information about someone else's vehicle. Most states allow DMV searches only for specific reasons: you are the registered owner, you are an insurance company investigating a claim, you are an attorney in a legal case, or you are law enforcement. Some states have a "permissible use" rule that defines who can search and why.
If you have a legitimate reason to search DMV records, contact your state's DMV directly. Many states now offer online searches through their websites, though you may need to verify your identity or provide documentation of your reason for the search. Fees vary by state, typically ranging from no charge to a few dollars per search.
NHTSA database: recalls and safety data
The National Highway Traffic Safety Administration (NHTSA) maintains a free, public database of vehicle recalls and safety complaints. You can search by VIN or by make, model, and year at safercar.gov. This database shows all open recalls for a vehicle, whether the recalls have been completed, and links to safety bulletins and consumer complaints.
The NHTSA database does not show ownership, accident history, or title status. It is useful for checking whether a vehicle you own or are considering buying has unresolved safety issues, but it is not a complete vehicle history report.
Searching the NHTSA database is free and does not require any special permission or account. The information is updated regularly as manufacturers report new recalls.
Third-party vehicle history services
Companies like Carfax, AutoCheck, and the National Insurance Crime Bureau (NICB) compile vehicle history reports by gathering data from insurance companies, repair shops, DMV records, and auction houses. These reports typically show accident history, title problems, service records, and whether the vehicle has been reported stolen or salvaged.
A single report from Carfax or AutoCheck usually costs between $20 and $40, though some dealerships and websites offer free reports as part of their listings. The reports are not official government documents, but they are widely used by buyers, sellers, and lenders to assess a vehicle's condition and value.
The accuracy of these reports depends on whether the relevant events were reported to the companies' data sources. A minor accident that was paid for in cash and never reported to insurance may not appear in a history report. Conversely, a vehicle may be flagged as having a "branded title" (salvage, flood, lemon law buyback) based on state DMV records that the service has access to.
VIN decoders and what they reveal
A VIN decoder breaks down the 17-character Vehicle Identification Number into its components, revealing the vehicle's manufacturer, plant of origin, model year, engine type, and other manufacturing details. Many VIN decoders are free and available online through automotive websites and forums.
A VIN decoder does not show ownership, accident history, or title status. It is useful for verifying that a vehicle's year and model match what the seller claims, or for finding technical specifications like engine size or transmission type. If you are buying a used car and the seller provides a VIN, running it through a decoder is a quick way to confirm basic facts before you invest time in a full history report.
How to search by registration number in practice
The steps depend on what information you need and which database you are using. If you need to know who owns a vehicle, start with your state's DMV website and look for an online search tool, or call the DMV to ask about the process for your situation. Be prepared to explain your reason for the search.
If you are buying a used car and want a history report, ask the seller for the VIN, then purchase a report from Carfax or AutoCheck. Many dealerships and online marketplaces (Autotrader, Cars.com) include free Carfax reports in their listings, so check there first.
If you want to check for recalls or safety issues, go to safercar.gov and enter the VIN. This search is free and takes less than a minute.
If you are involved in an accident or insurance claim, your insurance company will conduct its own searches and may order a detailed history report. You do not need to do this yourself; the insurer will handle it as part of the claims process.
Legal limits on vehicle searches
Searching for vehicle information using a registration number or VIN is legal when you have a legitimate reason. Buying a car, checking for recalls, or verifying ownership in a transaction are all legitimate reasons. Searching for information about someone else's vehicle out of curiosity, or to track or harass them, is not.
Unauthorized access to DMV records — attempting to search state ownership records without a permissible reason — can result in civil fines, criminal charges, or both, depending on your state. Some states have specific laws against "pretexting," which is obtaining personal information under false pretenses.
Third-party services like Carfax and AutoCheck have their own terms of use. Purchasing a report and using it for your own decision-making is permitted; reselling reports or using them for purposes like debt collection or harassment is not.
Frequently Asked Questions
Can I find out who owns a car just by looking at the license plate?
Not through public records. License plate numbers are not searchable in most public databases. You would need to contact your state's DMV, and they will only provide owner information if you have a legitimate reason for the search. Law enforcement and insurance companies have access; private citizens generally do not.
What is the difference between a VIN and a registration number?
A VIN is a unique 17-character code assigned by the manufacturer and never changes. A registration number (license plate) is assigned by your state's DMV and changes if you move to a different state or renew your registration. Both can be used to search for vehicle information, but they access different databases.
If I buy a used car, do I need to run my own vehicle history report?
It is not required, but it is strongly recommended. Many dealerships and online marketplaces include free Carfax or AutoCheck reports in their listings. If the seller does not provide one, you can purchase a report yourself for $20 to $40. This report can reveal accident history, title problems, and service records that affect the car's value and safety.
Will a vehicle history report show me every accident a car has been in?
No. A history report shows only accidents that were reported to insurance companies or repair shops that share data with the service. A minor accident paid for in cash and repaired at an independent shop may not appear. For this reason, a clean history report does not may provide the car has never been damaged.
Is it legal to search for someone else's vehicle information?
It depends on your reason and which database you use. Searching the free NHTSA recall database or a VIN decoder is legal for anyone. Searching state DMV records requires a legitimate reason and permission. Attempting to access DMV records without authorization can result in fines or criminal charges. When in doubt, contact your state's DMV to ask what is permitted.