The 2015 Optima midsize sedan arrives with the next-generation of UVO eServices and a number of subtle interior refinements meant to improve ergonomics and offer a more premium experience.

Available optionally on the EX, SX, SX Turbo and standard on the SX-Limited, the next-generation UVO eServices offers additional features designed to keep the owner better informed, from behind the wheel or remotely, via a smartphone.

To improve functionality for the driver, the steering wheel-mounted buttons for the cruise control have been repositioned on the right-side spoke. The sporty D-shaped steering wheel found in the SX-Limited gets new brushed bezels, and the stitching is now offered in a contrasting white. Also new is a black cloth option for the LX.

Outside, the 2015 Optima is now available with a Smokey Blue metallic paint, and Sparkling Silver and Platinum Graphite replace Bright Silver and Metal Bronze, respectively. The acoustic laminated windshield, found last year only on SX-Limited, is offered across the Optima lineup for 2015.

The 2015 Kia Optima continues to offer 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.

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 in the SX and SX Limited. This turbocharged unit delivers V6-type power with a four-cylinder's efficiency.

Each engine choice is mated to a six-speed automatic transmission featuring Sportmatic shifting. Drive Mode Select (DMS), which offers owners a customizable driving experience by adjusting transmission shift points and steering weight, remains exclusive to the SX Turbo and SX Limited.