2026 Kia K5 (variant 1) MPG & Specs
Quick answer
The 2026 Kia K5 gets an EPA-estimated 25/36 MPG (city/highway) and 29 MPG combined, with an estimated $2,100/year fuel cost and 310 g/mi CO₂. Engine: 2.5 L 4-cyl.
The 2026 Kia K5 with the 2.5-liter 4-cylinder regular gasoline engine returns an EPA-estimated 25 MPG in the city and 36 MPG on the highway, for a combined 29 MPG. This page summarizes the official EPA fuel-economy and emissions data for this configuration.
| Engine | 2.5 L 4-cyl |
| Transmission | Automatic (S8) |
| Drive | Front-Wheel Drive |
| Fuel type | Regular Gasoline |
| Vehicle class | Large Cars |
| MPG — city | 25 |
| MPG — highway | 36 |
| MPG — combined | 29 |
| Annual fuel cost* | $2,100 |
| CO₂ tailpipe | 310 g/mi |
| EPA GHG score | 6/10 |
How efficient is it?
With a combined 29 MPG, the 2026 Kia K5 sits in the good range for fuel economy. That is about average for its class (Large Cars, 26 MPG average).
Fuel economy and running costs
At about $2,100 per year in fuel (EPA estimate, 15,000 mi/yr), fuel is a major part of the cost of owning the 2026 Kia K5. Over five years that is roughly $10,500 at today's prices — before insurance, maintenance, and depreciation.
Emissions
The 2026 Kia K5 emits approximately 310 grams of CO₂ per mile at the tailpipe, earning an EPA greenhouse-gas score of 6 out of 10. Lower emissions generally track higher fuel economy.
How to read these numbers
EPA figures come from standardized laboratory test cycles and are the same estimates shown on the vehicle's window sticker. Your real-world mileage depends on driving style, conditions, fuel grade, and maintenance. Use combined MPG and annual fuel cost to compare vehicles fairly.