A new mid-size sedan named the K5 debuted for 2021, taking the Optima’s place in Kia’s lineup ... The high-end SX featured a 274-hp turbocharged engine and steering-wheel shift paddles.

The Kia K5 debuted for 2021 as the replacement for the Optima mid-size sedan ... All-wheel drive was available, but only with the 180-hp base engine. The upscale cabin sported premium materials ...

Just the facts, ma’am. Ergo: The front-wheel-drive 2021 Kia K5 GT, the Korean automaker’s edgy Optima reboot with a 290-hp turbo four and a DCT, has a quicker 0-60 mph time, better cornering ...