Hyundai also reports that the agreement was reached, in part, due to the reimbursement program instituted after the economy adjustment. This program allows owners to be reimbursed the extra fuel cost, with payments determined by miles driven. The payments are sent after an owner has an affected car's odometer checked by a dealer. In addition, Hyundai also offered lump-sum payments as an option after the results of a class-action lawsuit. So far, the company reports about 75 percent of eligible owners have participated in the program.
This isn't the only major payment Hyundai has made concerning the fuel economy issue. In 2014, Hyundai paid roughly $300 million in fines to the EPA. The company was also sued for inflated fuel economy claims in South Korea. In the US, models affected by the adjustment include the Hyundai Santa Fe, Accent, Veloster, Sonata Hybrid, Tucson, Genesis and Azera, along with the Kia Soul, Rio, Sorento, Sportage and Optima.