Kia K4 MPG & Fuel Economy
The 2026 Kia K4 gets up to 34 MPG combined (30 city / 40 highway) in EPA testing.
Latest model year (2026):
The Kia K4 gets up to 33 MPG combined (29 city / 39 highway) in the Auto (AV-S1), 4 cyl, 2.0 L trim.
Kia K4 MPG — All Years
| Year | Trim | Engine | Fuel | City (MPG) | Hwy (MPG) | Combined (MPG) |
|---|---|---|---|---|---|---|
| 2026 | Auto (AV-S1), 4 cyl, 2.0 L | 4 2.0L | Regular Gasoline | 29 | 39 | 33 |
| 2026 | Auto (AV-S1), 4 cyl, 2.0 L | 4 2.0L | Regular Gasoline | 29 | 39 | 33 |
| 2026 | Auto (AV-S1), 4 cyl, 2.0 L | 4 2.0L | Regular Gasoline | 28 | 34 | 30 |
| 2026 | Auto (S8), 4 cyl, 1.6 L | 4 1.6L | Regular Gasoline | 26 | 33 | 28 |
| 2026 | Auto (S8), 4 cyl, 1.6 L | 4 1.6L | Regular Gasoline | 26 | 33 | 28 |
| 2025 | Auto (AV-S1), 4 cyl, 2.0 L | 4 2.0L | Regular Gasoline | 29 | 39 | 33 |
| 2025 | Auto (AV-S1), 4 cyl, 2.0 L | 4 2.0L | Regular Gasoline | 30 | 40 | 34 |
| 2025 | Auto (S8), 4 cyl, 1.6 L | 4 1.6L | Regular Gasoline | 26 | 36 | 29 |
Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.
Kia K4 MPG FAQ
What is the MPG of the Kia K4?
The Kia K4 gets up to 34 MPG combined (30 city / 40 highway) in the 2026 model year. Fuel economy varies by engine and trim — see the full table above for details.
Which Kia K4 trim has the best fuel economy?
The Auto (AV-S1), 4 cyl, 2.0 L trim offers the best combined fuel economy at 34 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.