# Kia K4 specs and mpg by year - **Latest year:** 2027 - **MPG (combined):** 28-33 - **Drive:** FWD - **Years covered:** 2025-2027 ## Quick answer The 2027 Kia K4 is a midsize car rated at 28-33 mpg combined. Engines: 2.0L 4-cyl; 1.6L 4-cyl turbo. ## Every 2027 Kia K4 version | Version | Engine | Drive | Transmission | City/Hwy | Combined | Fuel cost / year | CO2 | | --- | --- | --- | --- | --- | --- | --- | --- | | K4 4DR with DMS | 2.0L 4-cyl | FWD | CVT | 29/39 | 33 mpg | $2,050 | 269 g/mi | | K4 without DMS | 2.0L 4-cyl | FWD | CVT | 29/39 | 33 mpg | $2,050 | 267 g/mi | | K4 Hatchback | 2.0L 4-cyl | FWD | CVT | 28/34 | 30 mpg | $2,250 | 289 g/mi | | K4 | 1.6L 4-cyl turbo | FWD | Automatic | 26/33 | 28 mpg | $2,400 | 314 g/mi | | K4 Hatchback | 1.6L 4-cyl turbo | FWD | Automatic | 26/33 | 28 mpg | $2,400 | 314 g/mi | Each row is a version the EPA tested. Fuel cost assumes 15,000 miles a year (55% city) at national average prices; CO2 is tailpipe emissions. ## Kia K4 specs by year | Year | Engines | Transmission | Drive | MPG (combined) | | --- | --- | --- | --- | --- | | 2027 | 2.0L 4-cyl; 1.6L 4-cyl turbo | CVT, Automatic | FWD | 28-33 | | 2026 | 2.0L 4-cyl; 1.6L 4-cyl turbo | CVT, Automatic | FWD | 28-33 | | 2025 | 2.0L 4-cyl; 1.6L 4-cyl turbo | CVT, Automatic | FWD | 29-34 | EPA combined ratings. MPGe is the EPA efficiency measure for electric cars. Ranges cover every engine and drivetrain EPA tested for that year. ## How has the K4 changed over the years? - **2026:** combined mpg went from 29-34 to 28-33. ## What does it cost to run a K4? The EPA puts the 2027 Kia K4's fuel cost at **$2,050-$2,400 a year**, against about $2,488 for other current midsize car: roughly 11% less. Over five years at 15,000 miles a year that is about $11,125 in fuel. ## K4 vs rivals | Model | Powertrains | Fuel economy | Range | Fuel cost / year | | --- | --- | --- | --- | --- | | [Toyota Prius](/vehicles/toyota-prius) | Hybrid | 48-57 mpg | -- | $1,200-$1,400 | | [Hyundai Elantra](/vehicles/hyundai-elantra) | Gas, Hybrid | 23-54 mpg | -- | $1,250-$3,550 | | [Toyota Camry](/vehicles/toyota-camry) | Hybrid | 43-51 mpg | -- | $1,300-$1,550 | | [Honda Civic](/vehicles/honda-civic) | Gas, Hybrid | 24-49 mpg | -- | $1,350-$3,400 | | [Honda Accord](/vehicles/honda-accord) | Gas, Hybrid | 31-48 mpg | -- | $1,400-$2,150 | | [Lexus ES](/vehicles/lexus-es) | Electric, Hybrid | 44-46 mpg | 307 mi | $600-$1,850 | | [Toyota Crown](/vehicles/toyota-crown) | Hybrid | 30-41 mpg | -- | $1,650-$2,250 | | [Nissan Sentra](/vehicles/nissan-sentra) | Gas | 32-33 mpg | -- | $2,050-$2,100 | Other current midsize car from other makes, most efficient first. ## Frequently asked questions ### What mpg does the 2027 Kia K4 get? The 2027 Kia K4 is EPA-rated at 28-33 mpg combined, depending on engine and drivetrain. Real-world mileage varies with speed, climate and load. ### What engine does the 2027 Kia K4 have? The 2027 Kia K4 comes with: 2.0L 4-cyl; 1.6L 4-cyl turbo. It uses cvt, automatic transmissions and is offered with FWD. ### Is there a hybrid Kia K4? No. In the EPA data from 2025-2027 the Kia K4 has no hybrid version. ### Which Kia K4 year gets the best gas mileage? In the EPA data, the 2025 Kia K4 has the highest combined rating, up to 34 mpg. Ratings for the same model can change between years when engines or test procedures change. ### How much does it cost to fuel a 2027 Kia K4 for a year? About $2,050-$2,400 a year, using the EPA's assumptions of 15,000 miles (55% city, 45% highway) at national average fuel prices. Your cost depends on your local prices, mileage and driving style. ### What is the city and highway mpg of the 2027 Kia K4? The most efficient 2027 version, the K4 4DR with DMS, is rated 29 mpg city and 39 mpg highway (33 combined). Other engines and drivetrains are rated lower; the versions table above lists each one. ### How much CO2 does the 2027 Kia K4 emit? EPA rates its tailpipe CO2 at 267-314 grams per mile depending on version. Lower is better; the cleanest gas cars sit under 250 g/mi and electric cars have none at the tailpipe. ### Is the Kia K4 cheap to run compared with other midsize cars? Yes, cheaper than average: its EPA annual fuel cost of $2,050-$2,400 compares with about $2,488 for other current midsize car models. Fuel is only part of running costs; insurance, tires and repairs also differ. ## Sources - [fueleconomy.gov (US DOE and EPA)](https://www.fueleconomy.gov/) ## All Kia cars - [Kia Niro](https://diagxcar.com/vehicles/kia-niro) - [Kia K5](https://diagxcar.com/vehicles/kia-k5) ## More Kia models - [Kia Carnival](https://diagxcar.com/vehicles/kia-carnival) - [Kia EV6](https://diagxcar.com/vehicles/kia-ev6) - [Kia EV9](https://diagxcar.com/vehicles/kia-ev9) - [Kia Seltos](https://diagxcar.com/vehicles/kia-seltos) - [Kia Sorento](https://diagxcar.com/vehicles/kia-sorento) - [Kia Sportage](https://diagxcar.com/vehicles/kia-sportage) - [Kia Telluride](https://diagxcar.com/vehicles/kia-telluride) - [Kia Forte](https://diagxcar.com/vehicles/kia-forte): discontinued - [Kia Rio](https://diagxcar.com/vehicles/kia-rio): discontinued - [Kia Sedona](https://diagxcar.com/vehicles/kia-sedona): discontinued - [Kia Soul](https://diagxcar.com/vehicles/kia-soul): discontinued - [Kia Stinger](https://diagxcar.com/vehicles/kia-stinger): discontinued ## Other midsize cars - [Lexus ES](https://diagxcar.com/vehicles/lexus-es) - [Lexus LS](https://diagxcar.com/vehicles/lexus-ls) - [Mazda 3](https://diagxcar.com/vehicles/mazda-3) - [Mazda 6](https://diagxcar.com/vehicles/mazda-6) - [Mercedes-Benz E-Class](https://diagxcar.com/vehicles/mercedes-benz-e-class) - [Mini Clubman](https://diagxcar.com/vehicles/mini-clubman) - [Nissan Altima](https://diagxcar.com/vehicles/nissan-altima) ## Compared with - [Honda Accord](https://diagxcar.com/vehicles/honda-accord) - [Honda Civic](https://diagxcar.com/vehicles/honda-civic) - [Hyundai Elantra](https://diagxcar.com/vehicles/hyundai-elantra) - [Nissan Sentra](https://diagxcar.com/vehicles/nissan-sentra) - [Toyota Camry](https://diagxcar.com/vehicles/toyota-camry) - [Toyota Crown](https://diagxcar.com/vehicles/toyota-crown) - [Toyota Prius](https://diagxcar.com/vehicles/toyota-prius) ## Car care - [How long do tires last?](https://diagxcar.com/how-long/tires) - [How often to change oil](https://diagxcar.com/how-often/change-oil) - [Tire size calculator](https://diagxcar.com/tools/tire-size-calculator) --- Source page: https://diagxcar.com/vehicles/kia-k4 Updated: 2026-11-03 General information, not a substitute for a qualified mechanic.