Ford Mustang Mach-E vs Hyundai Ioniq 5: fuel economy and fuel cost
In model year 2026 the Hyundai Ioniq 5 is the cheaper of the two to fuel: about $800 a year for its lowest-cost configuration (Ioniq 5 Standard range, 115 MPGe combined), against $840 for the Ford Mustang Mach-E (Mustang Mach-E Extended, 110 MPGe combined). That is $40 a year, or $200 over five years.
Both are classed as Small SUVs by the EPA. 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
Ford Mustang Mach-E
Lowest fuel cost configuration
Mustang Mach-E Extended
$5.60 per 100 miles
15,000 mi/yr, same fuel prices
320 mi EPA range · 31 kWh/100 mi
6 configurations in MY2026
- 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
What the fuel costs
Annual fuel cost of the lowest-cost configuration
- Ford Mustang Mach-E$840 a year · $5.60 per 100 mi
- Hyundai Ioniq 5$800 a year · $5.33 per 100 mi
Difference per year
$40
Hyundai Ioniq 5 costs less to fuel
Over 5 years
$200
$40 a year × 5, 15,000 mi/yr, same fuel prices
Head to head, MY2026
| Measure | Ford Mustang Mach-E | Hyundai Ioniq 5 |
|---|---|---|
| Lowest-cost configuration | Mustang Mach-E Extended | Ioniq 5 Standard range |
| Powertrain | Electric | Electric |
| Combined rating | 110 MPGe | 115 MPGe (better) |
| City rating | 115 MPGe | 131 MPGe (better) |
| Highway rating | 104 MPGe (better) | 100 MPGe |
| EPA range | 320 mi (better) | 245 mi |
| Electricity use | 31 kWh/100 mi | 29 kWh/100 mi (better) |
| Annual fuel cost | $840/yr | $800/yr (better) |
| Cost per 100 miles | $5.60 | $5.33 (better) |
| Annual cost range, all configurations | $840–$1,100 | $800–$1,310 |
| Configurations in MY2026 | 6 | 7 |
| EPA class | Small SUVs | Small SUVs |
Best configuration by powertrain
| Powertrain | Ford Mustang Mach-E | Hyundai Ioniq 5 |
|---|---|---|
| Electric | 110 MPGe · $840/yr Mustang Mach-E Extended | 115 MPGe · $800/yr Ioniq 5 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.
Ford Mustang Mach-E
- Higher highway rating: 104 MPGe vs 100 MPGe
- Longer EPA range: 320 mi vs 245 mi
Hyundai Ioniq 5
- Lower annual fuel cost: $800 vs $840
- Higher combined rating: 115 MPGe vs 110 MPGe
- Higher city rating: 131 MPGe vs 115 MPGe
Year by year
| Model year | Ford Mustang Mach-E | Hyundai Ioniq 5 | ||
|---|---|---|---|---|
| Combined | Per year | Combined | Per year | |
| 2026 | 84–110 MPGe | $840–$1,100 | 71–115 MPGe | $800–$1,310 |
| 2025 | 86–110 MPGe | $840–$1,080 | 71–115 MPGe | $800–$1,310 |
| 2024 | 86–106 MPGe | $870–$1,080 | 99–114 MPGe | $820–$930 |
| 2022 | 82–103 MPGe | $900–$1,130 | 98–114 MPGe | $820–$940 |
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 Ford Mustang Mach-E or the Hyundai Ioniq 5?
The Hyundai Ioniq 5 is cheaper: about $800 a year against $840 for the Ford Mustang Mach-E, a difference of $40 a year. That compares the lowest-cost configuration of each in model year 2026 at 15,000 miles a year with the same fuel prices.
How much would the Hyundai Ioniq 5 save over five years?
About $200 ($40 a year for five years), assuming 15,000 miles a year and the same fuel prices. Your total depends on how much you drive and on local prices; see fuel cost by state.
Which has the better fuel economy rating, the Ford Mustang Mach-E or the Hyundai Ioniq 5?
The Hyundai Ioniq 5 is rated 115 MPGe combined against 110 MPGe for the Ford Mustang Mach-E. City: 115 MPGe vs 131 MPGe. Highway: 104 MPGe vs 100 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 Ford Mustang Mach-E and the Hyundai Ioniq 5 in the same class?
Yes. The EPA classes both as Small SUVs.
Explore these cars
- Ford Mustang Mach-E: ratings, trims and every model year
- Hyundai Ioniq 5: ratings, trims and every model year
- 2026 Ford Mustang Mach-E: all configurations
- 2026 Hyundai Ioniq 5: all configurations
More comparisons
- Ford Escape vs Ford Mustang Mach-E
- Hyundai Ioniq 5 vs Cadillac Lyriq
- Hyundai Ioniq 5 vs Kia EV6
- Hyundai Tucson vs Hyundai Ioniq 5
- Tesla Model Y vs Ford Mustang Mach-E
- 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