Seoul Motor Show
In 2009, Kia unveiled the mild hybrid Forte at the Seoul Motor Show for the South Korean market. Taking its underpinnings from the Hyundai Elantra LPI Hybrid, the car is powered by liquefied petroleum gas (LPG). It is powered with an 1.6-liter LPG engine coupled with a electric motor and a lithium-polymer battery pack, making it the first production car to use lithium-polymer batteries.