Key Takeaways
- Altering a VIN is a federal felony that can result in up to 10 years in prison and fines up to $250,000.
- Altered or cloned VINs are usually found on stolen vehicles or cars with serious damage that sellers want to hide.
- You can check a vehicle's VIN history through services like Carfax or AutoCheck before buying, and inspect the VIN plates yourself for signs of tampering.
- Buying a car with an altered VIN can leave you with an uninsurable vehicle and potential criminal liability even if you did not know about the alteration.
- If you discover a VIN has been altered on a car you own, report it to local police and the National Insurance Crime Bureau when ready.
Why VINs Get Altered
A VIN is altered to conceal a vehicle's true identity and history. The most common reason is to sell a stolen car under a false identity so the original owner cannot recover it and the thief can pocket the sale price. Another reason is to hide a salvage title — a designation that means the car was declared a total loss by an insurance company due to theft, flood, fire, or major collision damage. A car with a salvage title is worth far less than an identical car with a clean title, so some sellers alter the VIN to obtain a clean title fraudulently.
VIN cloning is a related crime in which a criminal uses the VIN from a legitimate vehicle (often a common model in good condition) and applies it to a different car with a hidden past. The cloned car then appears to have the clean history of the legitimate vehicle. Both practices are federal crimes under the Vehicle Identification Number Theft Prevention Act.
How to Spot an Altered or Cloned VIN
The VIN appears in multiple places on a vehicle: on a metal plate on the driver's side dashboard (visible through the windshield), on the engine block, on the frame under the car, and on the door jamb. If the numbers do not match across all locations, or if any of them show signs of tampering — filing, welding, grinding, or replacement — the VIN has been altered.
Look for inconsistencies in the stamping itself. A legitimate VIN is stamped deeply and evenly into metal during manufacturing. An altered VIN may show shallow stamping, uneven depth, or signs of welding or grinding around the numbers. The metal around a tampered VIN often shows discoloration, rust, or fresh paint that does not match the surrounding area. If you are inspecting a used car, take photos of each VIN location and compare them carefully.
A vehicle history report from Carfax or AutoCheck will flag mismatches between the VIN you provide and the vehicle's recorded history. If the report shows a different VIN was previously associated with the car, or if the history does not match the car's apparent condition and mileage, that is a red flag. Some reports will explicitly note if a VIN has been reported as altered or cloned.
Legal Consequences of Altering a VIN
Altering a VIN is a federal felony under 18 U.S.C. § 511. A conviction carries a prison sentence of up to 10 years and fines up to $250,000. State laws often add additional penalties. Possessing a vehicle with an altered VIN — even if you did not alter it yourself — can also be prosecuted as a crime in many states, depending on whether you knew about the alteration.
Beyond criminal liability, buying a car with an altered VIN creates serious practical problems. Insurance companies will refuse to cover the vehicle because they cannot verify its history or confirm it is not stolen. Banks will not finance it. You cannot register it with your state's Department of Motor Vehicles. If you are pulled over, law enforcement can seize the vehicle on the spot. If the car was stolen, the original owner can reclaim it at any time, and you lose your money with no legal recourse.
What to Do Before Buying a Used Car
Always obtain a vehicle history report before purchasing a used car. Services like Carfax, AutoCheck, and the National Insurance Crime Bureau's VINCheck tool are inexpensive and take minutes to run. The report will show whether the car has a salvage title, has been reported stolen, or has a history of major damage. Compare the VIN on the report to the VIN on the car itself — on the dashboard, door jamb, and engine block.
Have a trusted mechanic inspect the car in person, including a close look at all VIN locations. Ask the seller directly about the car's history and get their answers in writing. If anything feels off — the seller is evasive, the price is unusually low, the history report does not match the car's condition — walk away. A good deal is not worth the legal and financial risk of an altered VIN.
If You Discover an Altered VIN on Your Vehicle
If you own a car and discover the VIN has been altered, stop driving it when ready and report it to your local police department. Provide them with the vehicle history report, photos of the VIN locations, and any documentation of the purchase. Also report the vehicle to the National Insurance Crime Bureau (NICB) at their VINCheck tool or by phone.
Contact your state's Department of Motor Vehicles to report the altered VIN and ask what steps are needed to resolve the registration. If you purchased the car recently and the alteration was not disclosed, you may have grounds to pursue the seller in small claims court or through your state's consumer protection agency. Document everything: the purchase receipt, the history report, photos, and all communication with authorities and the seller.
The Difference Between an Altered VIN and a Legitimate Replacement
In rare cases, a VIN plate may be legitimately replaced if it is damaged by accident or rust, but only through an official process. The vehicle owner must obtain a replacement VIN from their state's Department of Motor Vehicles, which issues a new plate and updates the registration. This process is documented and legal. A legitimate replacement VIN will be accompanied by paperwork from the DMV, and the vehicle's history will remain intact in the system.
If a seller claims a VIN was "legitimately replaced," ask to see the DMV documentation. If they cannot produce it, that is a sign the replacement was not done through official channels. A vehicle history report will also show whether a VIN change was recorded with the DMV or if it appears to be undocumented.
Frequently Asked Questions
Can I get insurance on a car with an altered VIN?
No. Insurance companies will not issue a policy on a vehicle with an altered VIN because they cannot verify the car's history or confirm it is not stolen. If you discover the alteration after purchase, your existing policy will be cancelled once the insurer learns about it.
What if I bought a car and later found out the VIN was altered?
Report it to police when ready and contact the National Insurance Crime Bureau. If you purchased the car recently and the seller did not disclose the alteration, you may be able to pursue a refund through small claims court or your state's consumer protection agency. Keep all documentation of the purchase and the discovery of the alteration.
How do I know if a car is stolen versus just having a cloned VIN?
A vehicle history report will show if the car was reported stolen. You can also run the VIN through the National Insurance Crime Bureau's VINCheck tool, which searches a database of stolen vehicles. If the car appears in that database, it is stolen. A cloned VIN means the number belongs to a different car, which the report may flag as a mismatch.
Is it illegal to own a car with an altered VIN if I did not know about it?
It depends on your state's laws. Some states prosecute possession of an altered-VIN vehicle as a crime only if the owner knew about the alteration. Others hold the owner liable regardless of knowledge. Once you discover an alteration, you should report it to police to protect yourself legally.
Can a mechanic tell if a VIN has been altered?
A good mechanic can spot obvious signs of tampering — filing, welding, grinding, or mismatched stamping — but not all alterations are visible. A vehicle history report is more reliable because it compares the VIN to the car's recorded history across multiple databases. Always use both: a professional inspection and a history report.