2015 Kia Optima LX. Clean CARFAX. 2015 Kia Optima LX Platinum Graphite FWD 6-Speed Automatic with Sportmatic 2.4L I4 DGI DOHC Black Cloth. Recent Arrival! Odometer is 37575 miles below market average! 23/34 City/Highway MPG Awards: * 2015 IIHS Top Safety Pick * 2015... via AutoRevolution