The 2014 Optima is available with two powerful Theta II powerplants featuring gasoline direct injection (GDI) technology: a 2.4-liter GDI four-cylinder or a 2.0-liter GDI turbo engine. A 2.4-liter hybrid powertrain is also available. The 2.4-liter GDI engine is available on LX, EX and SX models while the more robust 2.0-liter turbo GDI engine is offered exclusively to the SX. This turbo-charged unit delivers V6-type power with a four-cylinder's efficiency. Each engine choice is mated to a six-speed automatic transmission featuring Sportmatic® clutchless shifting. New for the 2014 Kia Optima, and exclusive to the sporty SX variant, is Drive Mode Select (DMS), which adjusts transmission shift points and steering weight, offering owners a customizable driving experience.
Source: Kia Press Release