 The EPA also reported that these vehicles also consume at least 10% more fuel than the window sticker numbers suggested. But the company also will not be required to update that. In a statement, GM said that it complied with all regulations in pollution and mileage certification. It said it's not admitting that it failed to comply with the Clean Air Act. And don't worry, car owners, no action is required from you. Brian VanMiller, CBS News.