- Gas
- Midsize cars
- MY2025–2027
Kia K4 MPG & Fuel Cost by Year
3 model years · 2025–2027
15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)
Kia K4 fuel economy at a glance
EPA has rated the Kia K4 for 3 model years, 2025 to 2027. Across those years its combined rating runs 28–34 MPG. The latest model year, 2027, has 5 configurations rated 28–33 MPG combined and costing $1,980–$2,310 a year to fuel at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2025 is the 2025 K4 2.0L 4-cyl FWD, at 34 MPG. Model year 2027 is still being filled in by EPA, so its row may gain configurations.
Kia K4 MPG by year
| Year | Gas (MPG) | $/yr |
|---|---|---|
| 2025-2027* (2025) Generation page | ||
| 2027 (partial) | 28–33 | $1,980–$2,310 |
| 2026 | 28–33 | $1,980–$2,310 |
| 2025 | 29–34 | $1,940–$2,220 |
Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.
Kia K4 generations
1 generations between 2025 and 2027. Open one for the table of every model year and configuration.
2027 powertrain options
More Kia models
Frequently asked questions
What is the Kia K4's gas mileage by year?
EPA combined ratings for the Kia K4 run 28–34 MPG across model years 2025 to 2027. The latest year, 2027, is rated 28–33 MPG.
Which Kia K4 model year has the best gas mileage?
The 2025 Kia K4 K4 2.0L 4-cyl FWD has the highest combined rating since 2025, at 34 MPG.
How much does a Kia K4 cost to fuel per year?
For MY2027, EPA-rated configurations cost $1,980–$2,310 a year to fuel, driving 15,000 miles at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient one costs $1,980.
Has the Kia K4's fuel economy improved over time?
No. The most efficient configuration moved from 34 MPG in 2025 to 33 MPG in 2027, 1 MPG less.