Kia K4 Fuel Economy History

MPG by year — EPA official data.

Best MPG Year

2025

34 MPG combined

Latest Model

2026

28 MPG combined

Year	Engine	City	Hwy	Combined	Fuel Cost/yr
2026	Regular	26	33	28	$2,400	Details →
2025	Regular	30	40	34	$2,000	Details →