Kia K4 MPG by year (2025-2026)
The agency's file has 2 model years of the Kia K4 from 2025 to 2026. The newest, the 2026 Kia K4, gets 28 to 33 mpg combined across 5 tested versions.
Best of 2026
33 mpgK4 4DR w/ DMS, combinedBest in the file
34 mpgK4 (4-cyl 2.0 L, Automatic (AV-S1)) #2; reached in 2025Best non-hybrid, 2026
33 mpgK4 4DR w/ DMS, combinedBest combined mileage by model year
Each dot is the best version of that model year. The table below holds every figure.
Your fuel cost, 2026 K4
Pick a 2026 version, then set your miles and fuel price. Fuel price as of 2026-11-14, U.S. Department of Energy / EPA. The price box starts at the dated price of the fuel the picked version burns and sets the price of that fuel.
2026 K4 4DR w/ DMS, 4-cyl 2.0 L: 29 mpg city, 39 highway, 33 combined. The agency's own estimate for the 2026 K4 version is $1,900 a year (15,000 miles, the agency's fuel prices).
Every model year
Open a year for the calculator, every version, rivals, safety record and recalls. Years in the table are the ones the agency tested; pages exist for 2 of them.
| Model year | Versions | Best gas | Fuel a year (agency) | Best figure against the year before |
|---|---|---|---|---|
| 2025 | 3 | 34 mpg | $1,850 to $2,150 | no earlier year in the file |
| 2026 | 5 | 33 mpg | $1,900 to $2,200 | -1 mpg |
The best combined figure changed against the year before in 1 of 2 model years: 2026: -1 mpg.
Where the newest year stands
The 2026 K4 is in the Midsize Cars class. By best combined figure it ranks 8th of 26 2026 models in that class; the middle figure for the class is 28 mpg and the top figure is 57 mpg. Best Midsize Cars mileage, 2026 models.
Other Kia models
Every other Kia model on this site, nearest to the K4 in newest-year mileage first.
| Model | Newest year | Combined | Against the K4 |
|---|---|---|---|
| Carnival | 2026 | 21 to 32 mpg | 1 lower |
| Forte | 2024 | 26 to 34 mpg | 1 higher |
| Soul | 2025 | 30 to 31 mpg | 2 lower |
| K5 | 2026 | 27 to 30 mpg | 3 lower |
| Seltos | 2026 | 25 to 29 mpg | 4 lower |
| Sorento | 2026 | 23 to 37 mpg | 4 higher |
| Sportage | 2026 | 24 to 42 mpg | 9 higher |
| Telluride | 2025 | 20 to 22 mpg | 11 lower |
| Niro | 2026 | 48 to 53 mpg | 20 higher |
| EV9 | 2026 | 78 to 89 MPGe | not the same measure |
| EV6 | 2026 | 83 to 115 MPGe | not the same measure |
Common questions
Which Kia K4 model year has the best mileage?
Since 2025, the best conventional figure is 34 mpg combined, for the 2025 K4 (4-cyl 2.0 L, Automatic (AV-S1)) #2.
How many versions of the Kia K4 has the agency tested?
8 versions across 2 model years (2025 to 2026).
Has the mileage of the Kia K4 gone up over the years?
The best combined figure was 34 mpg in 2025 and is 33 mpg in 2026, a change of -1 mpg.
Mileage and fuel cost: U.S. Environmental Protection Agency, fueleconomy.gov vehicle file (file dated 2026-11-04). Your own mileage depends on how and where you drive. Where our numbers come from.