Hyundai Motor and affiliate Kia Motors aim to lift global vehicle sales by 2.5 percent in 2015, as capacity constraints and a weak market recovery set up the South Korean pair for their slowest expansion in 12 years.

Hyundai-Kia, together the global No.5 automaker, have seen their sales growth slow since their record expansion in 2010 as factories reach full strength and competition rose at home and in key markets like the United States.