How odometer fraud became a $1 billion problem

About 10.5 million cars on American roads have had their odometers tampered with in some way, and about 1.9 million individuals have had their odometers rolled back, according to data firm Carfax. The average cost to those affected is about $4,000. The office of Odometer Fraud Investigation at the U.S. Department of Transportation's National Highway Traffic Safety Administration (NHTSA) estimates that about 400,000 vehicles are sold each year with false odometer readings.