The number of vehicles sold in South Korea increased in April,... but the slump continues for production and export rates.<br /> According to the trade ministry, last month, car sales jumped four-point-seven percent on-year..<br />But domestic vehicle production dipped six-point-four percent.<br /> Auto exports were also eight percent lower than the same period in 2017, due to lower demand overseas, and increased competition from rival brands.<br />GM Korea's sales plummeted by more than 54 percent due to consumers' concerns over its revival plan. <br />