Hyundai Ioniq 5 vs Kia EV6: fuel economy and fuel cost
In model year 2026 the Hyundai Ioniq 5 and the Kia EV6 cost the same to fuel: about $800 a year for the lowest-cost configuration of each (Ioniq 5 Standard range, 115 MPGe combined, and EV6 Standard Range, 115 MPGe combined).
Both come from the same maker or parent group. Costs assume 15,000 miles a year and the same fuel and electricity prices for both vehicles, using the EPA combined rating (55% city, 45% highway). Each figure is rounded to $10 and every difference is calculated from the rounded values.
The EPA is still publishing model year 2027 ratings, so this page compares model year 2026, the latest complete year.
- Electric
- Small SUVs
Hyundai Ioniq 5
Lowest fuel cost configuration
Ioniq 5 Standard range
$5.33 per 100 miles
15,000 mi/yr, same fuel prices
245 mi EPA range · 29 kWh/100 mi
7 configurations in MY2026
- Electric
- Small SUVs
Kia EV6
Lowest fuel cost configuration
EV6 Standard Range
$5.33 per 100 miles
15,000 mi/yr, same fuel prices
237 mi EPA range · 29 kWh/100 mi
5 configurations in MY2026
What the fuel costs
Annual fuel cost of the lowest-cost configuration
- Hyundai Ioniq 5$800 a year · $5.33 per 100 mi
- Kia EV6$800 a year · $5.33 per 100 mi
Difference per year
Same
The rounded annual costs are equal
Head to head, MY2026
| Measure | Hyundai Ioniq 5 | Kia EV6 |
|---|---|---|
| Lowest-cost configuration | Ioniq 5 Standard range | EV6 Standard Range |
| Powertrain | Electric | Electric |
| Combined rating | 115 MPGe | 115 MPGe |
| City rating | 131 MPGe (better) | 128 MPGe |
| Highway rating | 100 MPGe | 103 MPGe (better) |
| EPA range | 245 mi (better) | 237 mi |
| Electricity use | 29 kWh/100 mi (better) | 29 kWh/100 mi |
| Annual fuel cost | $800/yr | $800/yr |
| Cost per 100 miles | $5.33 | $5.33 |
| Annual cost range, all configurations | $800–$1,310 | $800–$1,130 |
| Configurations in MY2026 | 7 | 5 |
| EPA class | Small SUVs | Small SUVs |
Best configuration by powertrain
| Powertrain | Hyundai Ioniq 5 | Kia EV6 |
|---|---|---|
| Electric | 115 MPGe · $800/yr Ioniq 5 Standard range | 115 MPGe · $800/yr EV6 Standard Range |
Each cell shows the combined rating and the annual fuel cost of the lowest-cost configuration with that powertrain.
Where each one comes out ahead
Generated from the numbers above, comparing the lowest fuel cost configurations. No subjective judgements.
Hyundai Ioniq 5
- Higher city rating: 131 MPGe vs 128 MPGe
- Longer EPA range: 245 mi vs 237 mi
Kia EV6
- Higher highway rating: 103 MPGe vs 100 MPGe
Level on: annual fuel cost ($800), combined rating (115 MPGe)
Year by year
| Model year | Hyundai Ioniq 5 | Kia EV6 | ||
|---|---|---|---|---|
| Combined | Per year | Combined | Per year | |
| 2026 | 71–115 MPGe | $800–$1,310 | 83–115 MPGe | $800–$1,130 |
| 2025 | 71–115 MPGe | $800–$1,310 | 83–115 MPGe | $800–$1,100 |
| 2024 | 99–114 MPGe | $820–$930 | 83–117 MPGe | $800–$1,130 |
| 2022 | 98–114 MPGe | $820–$940 | 105–117 MPGe | $800–$870 |
Earlier model years are costed with today's fuel prices, so the table shows how each model's efficiency changed, not what fuel cost at the time. Ranges cover every configuration of that model year.
Frequently asked questions
Which is cheaper to fuel, the Hyundai Ioniq 5 or the Kia EV6?
They cost the same: about $800 a year each. That compares the lowest-cost configuration of each in model year 2026 at 15,000 miles a year with the same fuel prices.
Which has the better fuel economy rating, the Hyundai Ioniq 5 or the Kia EV6?
Both are rated 115 MPGe combined. City: 131 MPGe vs 128 MPGe. Highway: 100 MPGe vs 103 MPGe. These are the EPA ratings of each model's lowest-cost configuration.
How is the annual fuel cost calculated?
Distance of 15,000 miles a year at the EPA combined rating (55% city, 45% highway). Gasoline is priced at $4.36/gal (EIA U.S. average for regular, Sep 2026) and electricity at 18.3¢/kWh (EIA U.S. residential average, Jul 2026); premium and diesel configurations use their own EIA prices. Each result is rounded to $10, and differences are calculated from the rounded figures.
Are the Hyundai Ioniq 5 and the Kia EV6 in the same class?
Yes. The EPA classes both as Small SUVs.
Explore these cars
- Hyundai Ioniq 5: ratings, trims and every model year
- Kia EV6: ratings, trims and every model year
- 2026 Hyundai Ioniq 5: all configurations
- 2026 Kia EV6: all configurations
More comparisons
- Hyundai Ioniq 5 vs Cadillac Lyriq
- Kia Sportage vs Kia EV6
- Ford Mustang Mach-E vs Hyundai Ioniq 5
- Hyundai Tucson vs Hyundai Ioniq 5
- Tesla Model Y vs Kia EV6
- Tesla Model Y vs Hyundai Ioniq 5
- BMW X3 vs Mercedes-Benz GLC-Class
- Ford Maverick vs Hyundai Santa Cruz
- Hyundai Kona vs Kia Seltos
- Hyundai Santa Fe vs Kia Sorento
- Lexus RX vs Acura MDX
- Lexus RX vs Lexus NX
- All curated comparisons