South Korea's second-largest carmaker Kia Motors has posted a 35% drop in its first quarter net profit from a year earlier due to a strong won and work stoppages, AFP has reported. Consolidated net profit fell to 784bn won ($706m) in the quarter, from 1.2trn won a year earlier. Sales were down 6% to 11.08trn won. Kia is an affiliate of South Korea's largest automaker Hyundai Motor. The two together form the world's fifth-largest carmaking group by sales.