Based on owner complaints, 2011 to 2016 are the worst model years for the Kia Optima due to the problematic Theta II engine.

A new mid-size sedan named the K5 debuted for 2021, taking the Optima’s place in Kia’s lineup. The final-generation Optima offered several premium features, as well as two available ...

Redesigned during the 2016 model year, the longer, wider new generation Kia Optima continued to boldly define itself as an athletically styled sedan. One year after the mid-sized sedan's ...

ALG, which supplies residual value data to the auto industry, significantly raised its residuals for this generation Optima compared to the previous model--indicating confidence that this new Optima ...

Riding on an all-new chassis shared with the Hyundai Sonata, the redesigned 2016 Optima midsized sedan packs ... The latest version of Kia's UVO touch-screen infotainment system works with Apple ...