Z styling spominja na priljubljenih Kia Optima srednje velika limuzina in platformo in drivetrains v skupni rabi z Hyundai Equus, vzvratno vožnjo K900 polne velikosti sedan premakne korejsko blagovno znamko upmarket pomemben korak. With styling reminiscent of Kia's popular Optima midsize sedan and a platform and drivetrains shared with the Hyundai Equus, the rear-drive K900 full-size sedan moves the Korean brand a significant step upmarket.