The first-generation Kia Optima (MS) was manufactured between 2000 and 2005. Developed following Kia's integration into Hyundai Motor Group, it shared Hyundai's front-wheel-drive EF platform with the Sonata. Marketed in Europe and Canada as the Kia Magentis and in Korea as the Optima Regal, the mid-size sedan featured a traditional 3-box profile spanning 4,725 mm in length with a 2,700 mm wheelbase. This generation of the Optima (MS) was produced from 2000 to 2005 and offered in седан body styles. Built on an engineered platform, it features strong structural rigidity, refined aerodynamics, and advanced occupant safety engineering.

Engine options featured a 2.0-liter Sirius II four-cylinder (136 hp) and a 2.5-liter Delta V6 delivering 170 hp, paired with a 5-speed manual or 4-speed automatic transmission. A 2002 mid-cycle facelift introduced distinctive twin headlights reminiscent of European luxury sedans, a restyled front grille, and an updated 2.7-liter Delta V6 engine (173 hp). The powertrain lineup features modern engines optimized for thermal efficiency, balancing responsive acceleration with economical fuel consumption. Power is delivered through reliable manual or automatic transmissions. Mid-cycle updates introduced modernized LED lighting graphics, premium cabin materials, and enhanced active driver assistance suites.