"This settlement upholds the integrity of the nation's fuel economy and greenhouse gas programs." The companies, which are both owned by Hyundai and generally sell different versions of the same models, denied allegations that they violated the law. Hyundai blamed the inflated mileage on honest misinterpretation of the EPA's complex rules governing testing. Both companies said they are paying the penalties — $56.8 million for Hyundai and $43.2 million for Kia — to end the probe and potential litigation.