Hyundai is recalling nearly half a million midsize cars in the United States to replace the engines because a manufacturing problem could cause them to fail. According to cars.com, the recall covers 470,000 Sonata sedans from the 2011 and 2012 model years equipped with 2-liter or 2.4-liter gasoline engines. The company also is recalling nearly 100,000 Accent small cars because the brake lights can fail.