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Kia K4 MPG

EPA fuel economy for 13 Kia K4 trims sold from 2025 to 2027. Best ever: 34 MPG (2025 K4). Latest model year 2027: 28 to 33 MPG combined across 5 trims.

34best combined MPG (2025)
30 / 40city / highway of the best trim
28lowest combined MPG (2027)
3model years rated
$2,040a year to fuel, cheapest 2027 trim at EPA prices

Kia K4 fuel cost calculator

Enter what you pay for fuel and how far you drive in a year. The starting prices are the ones the EPA uses for its own yearly fuel-cost estimates. Every cost on this page updates as you type.

At $4.48 a gallon for regular and 15,000 miles a year, the cheapest 2027 Kia K4 to fuel is the K4 4DR with DMS, 2.0 L, 4 cyl (33 MPG) at $2,040 a year. The K4 Hatchback, 1.6 L, 4 cyl (28 MPG) costs $2,400, so the thriftier trim saves $360 a year and $1,800 over five years.

2027 trimEngineTransmissionDriveFuelCombCost/yrvs cheapest
K4 4DR with DMS2.0 L, 4 cylAuto (AV-S1)FWDRegular33$2,040cheapest
K4 without DMS2.0 L, 4 cylAuto (AV-S1)FWDRegular33$2,040cheapest
K4 Hatchback2.0 L, 4 cylAuto (AV-S1)FWDRegular30$2,240+$200
K41.6 L, 4 cylAuto (S8)FWDRegular28$2,400+$360
K4 Hatchback1.6 L, 4 cylAuto (S8)FWDRegular28$2,400+$360

Cost per year is miles per year divided by the EPA combined rating, times your fuel price; electric vehicles use the EPA's kWh per 100 miles instead. Rounded to the nearest $10. Your prices are kept in this browser only.

Kia K4 MPG by year

YearBest combinedCityHwyBest trim that yearTrims
2027332939K4 4DR with DMS, 2.0 L, 4 cyl, Auto (AV-S1)5
2026332939K4 4DR w/ DMS, 2.0 L, 4 cyl, Auto (AV-S1)5
2025343040K4, 2.0 L, 4 cyl, Auto (AV-S1)3

Every Kia K4 trim

YearTrimEngineTransmissionDriveFuelCityHwyCombCO2 g/miFuel cost/yr
2027K4 4DR with DMS2.0 L, 4 cylAuto (AV-S1)FWDRegular293933269$2,040
2027K4 without DMS2.0 L, 4 cylAuto (AV-S1)FWDRegular293933267$2,040
2027K4 Hatchback2.0 L, 4 cylAuto (AV-S1)FWDRegular283430289$2,240
2027K41.6 L, 4 cylAuto (S8)FWDRegular263328314$2,400
2027K4 Hatchback1.6 L, 4 cylAuto (S8)FWDRegular263328314$2,400
2026K4 4DR w/ DMS2.0 L, 4 cylAuto (AV-S1)FWDRegular293933269$2,040
2026K4 without DMS2.0 L, 4 cylAuto (AV-S1)FWDRegular293933267$2,040
2026K4 Hatchback2.0 L, 4 cylAuto (AV-S1)FWDRegular283430289$2,240
2026K41.6 L, 4 cylAuto (S8)FWDRegular263328314$2,400
2026K4 Hatchback1.6 L, 4 cylAuto (S8)FWDRegular263328314$2,400
2025K42.0 L, 4 cylAuto (AV-S1)FWDRegular304034264$1,980
2025K42.0 L, 4 cylAuto (AV-S1)FWDRegular293933273$2,040
2025K41.6 L, 4 cylAuto (S8)FWDRegular263629303$2,320

CO2 is tailpipe grams per mile from the EPA test. Fuel cost per year uses the prices and miles in the calculator above (the EPA's own prices and 15,000 miles a year until you change them); blank when the fuel has no price here (hydrogen, natural gas).

Compare with other 2027 Midsize Cars

VehicleCombinedCityHwy
2027 Tesla Model 3 Performance AWD111117106
2027 Hyundai Ioniq 6 N889382
2027 Toyota Prius555950
2027 Nissan Sentra with Normal/Eco Modes333038
2027 BMW 530i Sedan312935
2027 Mercedes-Benz E350282533

All Midsize Cars ranked by MPG

Questions people ask

What is the best MPG for a Kia K4?

The most efficient Kia K4 the EPA has rated is the 2025 K4 at 34 MPG combined (30 city, 40 highway).

What MPG does the 2027 Kia K4 get?

2027 Kia K4 trims range from 28 to 33 MPG combined, depending on engine, transmission and drivetrain.

Which Kia K4 has the worst fuel economy?

The 2027 K4 is the lowest rated at 28 MPG combined.

How much does it cost to fuel a Kia K4 for a year?

At $4.48 a gallon for regular and 15,000 miles a year, the cheapest 2027 Kia K4 to fuel is the K4 4DR with DMS, 2.0 L, 4 cyl (33 MPG) at $2,040 a year. The K4 Hatchback, 1.6 L, 4 cyl (28 MPG) costs $2,400, so the thriftier trim saves $360 a year and $1,800 over five years.

More from Kia: every Kia model. Fuel types on this model: Regular. EPA classes: Large Cars, Midsize Cars.