On June 30, 2020, Kia unveiled the US-market Optima and announced that it would be renamed to K5, taking the name from the South Korean version. Both the 1.6-liter turbocharged and 2.5-liter naturally aspirated Smartstream inline four-cylinder gasoline engines will be available with either front wheel drive or all wheel drive; the 2.5-litre turbocharged engine is only available in front wheel drive and is mated to an eight-speed wet dual clutch transmission. Trim levels include LX, LXS, GT-Line, EX, and GT. United States specification models will be assembled at Kia's West Point, Georgia assembly plant (KMMG).