SEOUL, Oct. 1 (Yonhap) -- Kia Motors Corp., South Korea's second-biggest automaker, said Tuesday that its sales fell 9.7 percent in September from a year earlier in its worst performance in more than a year.
Kia sold 193,671 vehicles last month, compared with 214,379 units in September of 2012, the company said in a statement.
The sales figure is the worst since August 2012 when Kia sold 190,870 units.
The carmaker blamed the poor sales on partial strikes by its unionized workers that cost the carmaker 413.5 billion won (US$384 million) in lost production.
Last month, Kia's union voted in favor of a tentative wage deal with the management.
For the first nine months of the year, Kia said it sold 2.07 million units, up 3.3 percent from a year ago.
Kia is a smaller sister company of Hyundai Motor Co. Together, the two form the world's fifth-largest automaker.
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