Kia K5: A Look at the Model's Generations

The Kia K5 may be a newer name in the brand's US lineup, but it replaces the long-running Kia Optima. The midsize sedan has been a staple for the Korean automaker for years, known by different names in various markets. In 2019, Kia introduced the fifth generation of its midsize sedan and unified the model name to K5 globally, including in the US.

The current K5 shares its engineering foundation with the Hyundai Sonata. It sits above the smaller Kia K4 in the lineup. The K5 stands out from its Hyundai counterpart with a distinct exterior and interior design, featuring Kia's 'Star Map' lighting and 'Opposites United' logo.

Unlike the Sonata, the K5 is offered only with gasoline engines, as no hybrid version is available. Its main rivals remain the Honda Accord, Toyota Camry, and Nissan Altima.

For the 2025 model year, the K5 received a midcycle refresh. 6-liter turbo unit. This new engine produces 11 more horsepower and pairs with an eight-speed automatic transmission. Front-wheel drive is standard, while all-wheel drive is now exclusive to the GT-Line trim. 5-liter turbocharged engine and dual-clutch automatic.

Interior updates include an available combined digital cluster and infotainment display, a new climate control screen, and a revised center console. Advanced driver aids like navigation-based Smart Cruise Control and highway driving assist are available on certain trims. Options include a 12-speaker Bose stereo, panoramic sunroof, and Digital Key.

US-market K5s are now built in South Korea instead of Georgia.

From 2021 to 2024, the first-generation K5 debuted with a new platform and design. It featured a sloping fastback body, full LED lighting, and a new grille. Trims included LX, LXS, GT-Line, EX, and GT. 6-liter turbo four-cylinder with an eight-speed automatic, with all-wheel drive offered on LXS and GT-Line.

5-liter turbo engine, dual-clutch transmission, bigger brakes, and sportier suspension. New tech included wireless Apple CarPlay and Android Auto, wireless charging, and split-screen infotainment. Early US production took place in West Point, Georgia.