Odometer rollbacks are on the rise nationwide. The number of vehicles with suspect odometers tops 2 million, according to the latest CARFAX data.

Roughly 2.1 million vehicles on the road have had their odometer rolled back — up 14 percent since 2021, or an additional 300,000 vehicles.

It’s estimated that consumers lose an average of $4,000 in value from unknowingly buying a rolled-back car, and that doesn’t include unexpected maintenance costs, the company said.

Odometer rollbacks occur when an unscrupulous owner or seller of a car alters the miles that display on a car’s gauge cluster. This might be done as a way to avoid mileage charges in a vehicle lease or to dramatically increase the value of a car, CARFAX stated.

Technology today makes it surprisingly easy to roll back an odometer.

“Odometer fraud didn’t go away with the introduction of digital odometers,” said Patrick Olsen, editor-in-chief for CARFAX. “We’re still seeing the number of vehicles on the road with a rolled-back odometer rise year-over-year. It takes con artists only a matter of minutes to wipe thousands and thousands of miles off a vehicle’s odometer.”

Because the market for used cars is hit, it’s an enticing opportunity for scam artists, the company added.

Below are the top 10 states reporting the most vehicles with rolled-back odometers. Nine of the 10 saw increases this year:

1. California: 469,000, up 7.2 percent.
2. Texas: 277,000, up 12.8 percent.
3. New York: 100,000, up 9 percent.
4. Florida: 85,400, up 1.4 percent.
5. Illinois: 79,000, up 7.6 percent.
6. Pennsylvania: 69,600, up 2.1 percent.
7. Georgia: 67,600, up 4 percent.
8. Arizona: 57,000, up 4.8 percent.
9. Virginia: 56,000, unchanged.
10. North Carolina: 49,000, up 8.2 percent.