2025 head-to-head · Midsize Car
2025 Hyundai Elantra vs Kia K4
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2025 Hyundai Elantra is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas, it costs about $1,292 a year to fuel (36 MPG), versus $1,368 for the 2025 Kia K4 (34 MPG). That's roughly $76 a year, or about $380 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Hyundai Elantra
- Kia K4
Side by side
| Hyundai Elantra | Kia K4 | |
|---|---|---|
| $1,292 | Your annual fuel cost | $1,368 |
| 36 MPG | Combined efficiency | 34 MPG |
| 32 MPG | City | 30 MPG |
| 41 MPG | Highway | 40 MPG |
| 99 cu ft | Passenger volume | 99 cu ft |
| 14 cu ft | Cargo volume | 14 cu ft |
| 246 g/mi | Tailpipe CO₂ (g/mi) | 264 g/mi |
| 7/10 | EPA fuel economy score | 7/10 |
| 7/10 | EPA greenhouse gas score | 7/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Regular gasoline |
| 2.0L 4-cyl | Engine / motor | 2.0L 4-cyl |
| CVT | Transmission | CVT |
| FWD | Drivetrain | FWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Hyundai Elantra vs Kia K4 across model years
- Hyundai Elantra
- Kia K4
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Among 42 2025 midsize cars, the Hyundai Elantra ranks 13th and the Kia K4 15th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2025 Hyundai Elantra or the 2025 Kia K4?
Measured by cost to drive, the Hyundai Elantra. The Hyundai Elantra is rated 36 MPG combined and the Kia K4 34 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 Hyundai Elantra vs. the Kia K4 per year?
At 15,000 miles a year with $3.10/gal regular gas, about $1,292 for the Hyundai Elantra and $1,368 for the Kia K4.
Hyundai Elantra vs Kia K4 in other years
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