You cannot legally change a car's mileage, and doing so is a federal crime

Changing a car's odometer reading is odometer fraud, a federal crime under the Truth in Mileage Act. It is illegal to alter, disconnect, or reset an odometer with the intent to change the mileage reading. The penalty includes fines up to $10,000 and up to three years in prison. Even if you own the car outright, changing its mileage is still illegal.

The law exists because mileage is the primary way buyers and insurers assess a vehicle's condition and value. A car with 50,000 miles is worth far more and is safer to buy than one with 150,000 miles. When someone rolls back an odometer, they are deceiving the next owner about the car's true wear and condition.

If you are considering this because you want to sell a car for more money, or because you are embarrassed by high mileage, the legal risk is not worth it. A buyer can discover the fraud through a vehicle history report, a mechanic's inspection, or a title check. Many states flag title documents when mileage discrepancies appear.

Key Takeaways

  • Odometer fraud is a federal crime that can result in fines up to $10,000 and up to three years in prison, regardless of whether you own the car.
  • Mileage fraud is straightforward to detect through vehicle history reports, mechanic inspections, and state title records that flag discrepancies.
  • If you are selling a car, disclosing the true mileage protects you legally and prevents the buyer from suing you later for fraud.
  • If you suspect a car you are considering buying has had its odometer rolled back, a pre-purchase inspection and vehicle history report will reveal the truth.

How odometer fraud is discovered

Vehicle history reports from services like Carfax and AutoCheck pull mileage records from every inspection, service visit, and title transfer. If a car shows 80,000 miles at one service appointment and then 60,000 miles at the next, the report flags the inconsistency. Buyers routinely check these reports before purchasing.

State motor vehicle departments also track mileage on title documents. When you transfer a title, the new owner's mileage reading is recorded. If the mileage goes backward or jumps inconsistently, the state may flag the title as suspicious. Some states will not issue a clean title if the mileage history does not match.

A mechanic can often spot signs of odometer tampering during a pre-purchase inspection. Wear on the steering wheel, pedals, seat, and door handles usually matches the mileage shown. If a car claims 60,000 miles but the interior looks like it has 150,000 miles of use, a trained inspector will notice. Engine and transmission condition also tell the story.

Why people attempt odometer fraud and what happens next

Most odometer fraud happens when someone is selling a car. Rolling back the mileage makes the car appear newer and more valuable, allowing the seller to ask a higher price. Some people do it to hide the true condition of a vehicle they know has problems.

When fraud is discovered, the consequences extend beyond the criminal penalty. The buyer can sue the seller for damages under state consumer protection laws and the federal Odometer Act. The seller may be ordered to refund the purchase price plus legal fees. If the car was financed, the lender may also pursue the seller.

If you are the buyer and discover fraud after purchase, you have legal recourse. Document the discrepancy with a vehicle history report and a mechanic's inspection. Report the fraud to your state's attorney general and to the National Highway Traffic Safety Administration (NHTSA). Many states allow buyers to rescind the sale or recover damages.

What to do if you are selling a car with high mileage

Disclose the true mileage on all paperwork, including the bill of sale and title transfer. The odometer reading must match the title document. This protects you legally and prevents the buyer from coming back with a fraud claim later.

High mileage does lower a car's resale value, but that is the market reality. A car with 150,000 miles will sell for less than one with 50,000 miles, but it will still sell. Price it fairly based on condition, maintenance history, and comparable listings in your area. Buyers who want a low-mileage car will look elsewhere; buyers who need an affordable used car will come to you.

Provide maintenance records to show the car has been well cared for. A high-mileage car with full service history is more attractive than a low-mileage car with no records. Be honest about any repairs, accidents, or mechanical issues. Transparency builds trust and protects you from liability.

What to do if you are buying a car and suspect fraud

Before you hand over money, order a vehicle history report from Carfax or AutoCheck. These reports cost $20 to $30 and show every recorded mileage reading. Look for gaps, jumps backward, or inconsistencies. If the report shows the car at 100,000 miles two years ago and now claims 80,000 miles, that is fraud.

Have a pre-purchase inspection done by a mechanic you trust, not one recommended by the seller. A good inspection costs $100 to $200 and includes a test drive, fluid checks, and a look at wear patterns inside and out. The mechanic will compare the interior wear to the claimed mileage and flag anything that does not match.

Ask the seller for service records and receipts. These documents show when the car was serviced and what the odometer read at each visit. If the records show higher mileage than the current odometer reading, you have proof of fraud. Walk away from the deal.

State laws and additional protections

The federal Truth in Mileage Act sets the minimum standard, but many states have stricter laws. Some states impose higher fines or longer prison sentences. A few states require sellers to sign an affidavit stating the mileage is accurate, and lying on that affidavit adds perjury charges.

Some states also require a vehicle history report to be provided to the buyer at the time of sale. This shifts the burden to the seller to prove the mileage is correct. Check your state's motor vehicle department website for specific rules about odometer disclosure and fraud penalties.

If you are buying a car from a dealer rather than a private seller, the dealer is legally responsible for the accuracy of the odometer reading. Dealers are required to disclose the mileage on the Monroney label and on the title. If a dealer sells you a car with rolled-back mileage, you have strong legal grounds to pursue damages.

Frequently Asked Questions

Can a mechanic tell if an odometer has been tampered with?

A good mechanic can spot signs of tampering by comparing interior wear to the claimed mileage, checking for loose dashboard panels, or looking for evidence of odometer cluster replacement. However, modern digital odometers are harder to detect. A vehicle history report is more reliable than a visual inspection alone.

What if I bought a car and later found out the mileage was wrong?

You can sue the seller for fraud under state consumer protection laws and the federal Odometer Act. Document the discrepancy with a vehicle history report and a mechanic's inspection. Report the fraud to your state's attorney general and the NHTSA. Many states allow you to rescind the sale or recover damages.

Is it illegal to disconnect an odometer even if I do not change the reading?

Yes. The Truth in Mileage Act makes it illegal to disconnect, reset, or alter an odometer with the intent to change the mileage reading. Even disconnecting it without changing the reading is illegal if the intent is to hide mileage. The penalty is the same: fines up to $10,000 and up to three years in prison.

Can I change the odometer reading if I am fixing it because it is broken?

No. If your odometer is broken, you must have it repaired by a may have access to technician and the true mileage must be recorded on the repair receipt. If the odometer cannot be repaired, some states allow you to note the discrepancy on the title. You cannot straightforward set it to a lower number.

What is the difference between odometer fraud and straightforward mileage misrepresentation?

Odometer fraud requires intent to deceive. If you honestly misstate the mileage on a bill of sale but the odometer reading is correct, that is still fraud. The law focuses on the odometer reading itself, not your state of mind. If the odometer does not match the actual miles driven, it is fraud.