2025 Kia K4 vs. 2025 Kia K5

Kia K4 trumps the K5 when it comes to fuel economy and maneuverability. The K4 LX model reaches an impressive 40 mpg, with the GT Line achieving a close 39 mpg on the highway. In comparison, the K5's LXS trim offers a respectable 37 mpg, though the turbocharged K5 GT Line AWD falls behind at 33 mpg on the highway. Adding to the K4's urban appeal, its tighter turning diameter makes it especially easy to maneuver through city streets and tight parking spaces.

For those looking to maximize value, the K4 offers a more affordable entry point without sacrificing essential features. The K4 enters at a competitive starting price of around $21,990, undercutting the K5, which starts at $26,990, making it an ideal choice for budget-conscious buyers seeking a well-rounded sedan.

Kia designed the K4 with rear passengers in mind, offering best-in-class rear headroom at 37.3 inches and rear legroom at 38 inches, making it more comfortable than the K5's 35.2 inches of rear legroom. The extra space is something taller passengers certainly appreciate, especially during long drives.