The latest version of the mid-sized sedan was launched in September 2009 in South Korea and early 2010 in the United States.
Sonata, which competes with Toyota Motor Corp's Camry, is Hyundai's top-selling model in the United States and helped the South Korean automaker achieve record sales and market share there last year. It was Hyundai's third-best selling model in South Korea last year.
Kim also told Reuters on the sidelines of an industry meeting that the revamped version of the large-sized Genesis would be introduced in late 2013.
