2025 head-to-head · Midsize Car
2025 Hyundai Ioniq 6 vs Toyota Prius Plug-in Hybrid
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 Ioniq 6 is the cheaper one to run. Driving 15,000 miles a year with 18¢/kWh electricity and $3.10/gal regular gas, it costs about $675 a year to fuel (135 MPGe), versus $758 for the 2025 Toyota Prius Plug-in Hybrid (127 MPGe + 52 MPG). That's roughly $83 a year, or about $414 over five years.
Your numbers
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Fuel cost over 10 years
- Hyundai Ioniq 6
- Toyota Prius Plug-in Hybrid
Side by side
| Hyundai Ioniq 6 | Toyota Prius Plug-in Hybrid | |
|---|---|---|
| $675 | Your annual fuel cost | $758 |
| 135 MPGe | Combined efficiency | 127 MPGe + 52 MPG |
| 151 MPGe | City | 140 MPGe / 53 MPG |
| 120 MPGe | Highway | 115 MPGe / 51 MPG |
| 25 kWh | Electricity use (kWh/100 mi) | 26 kWh |
| 240 mi | Driving range | 600 mi |
| — | All-electric range | 45 mi |
| 105 cu ft | Passenger volume | 91 cu ft |
| 11 cu ft | Cargo volume | 20 cu ft |
| 0 g/mi | Tailpipe CO₂ (g/mi) | 50 g/mi |
| 10/10 | EPA fuel economy score | 9/10 |
| 10/10 | EPA greenhouse gas score | 10/10 |
| 6.1 hrs | Charge time at 240V | 4 hrs |
| Electric | Powertrain | Plug-in hybrid |
| Electricity | Fuel | Regular gas + electricity |
| Electric motor (111 kW) | Engine / motor | 2.0L 4-cyl |
| Single-speed | Transmission | CVT |
| RWD | 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 Ioniq 6 vs Toyota Prius Plug-in Hybrid across model years
- Hyundai Ioniq 6
- Toyota Prius Plug-in Hybrid
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
The Toyota Prius Plug-in Hybrid goes farther between stops: about 600 miles on a full tank and charge, compared with 240 miles for the Hyundai Ioniq 6.
Per EPA interior volume figures, the Hyundai Ioniq 6 has more passenger space (105 vs. 91 cu ft); the Toyota Prius Plug-in Hybrid has more cargo space (20 vs. 11 cu ft).
Among 42 2025 midsize cars, the Hyundai Ioniq 6 ranks 2nd and the Toyota Prius Plug-in Hybrid 3rd for lowest fuel cost.
Because the Hyundai Ioniq 6 is fully electric, it has no tailpipe emissions and its running cost depends almost entirely on your electricity rate. Cheap overnight home charging widens its advantage over the Toyota Prius Plug-in Hybrid; relying on DC fast chargers can erase it.
Frequently asked questions
Which is more fuel-efficient, the 2025 Hyundai Ioniq 6 or the 2025 Toyota Prius Plug-in Hybrid?
Measured by cost to drive, the Hyundai Ioniq 6. The Hyundai Ioniq 6 is rated 135 MPGe combined and the Toyota Prius Plug-in Hybrid 127 MPGe + 52 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 Hyundai Ioniq 6 vs. the Toyota Prius Plug-in Hybrid per year?
At 15,000 miles a year with 18¢/kWh electricity and $3.10/gal regular gas, about $675 for the Hyundai Ioniq 6 and $758 for the Toyota Prius Plug-in Hybrid.
Which has more range?
The Toyota Prius Plug-in Hybrid: about 600 miles versus 240 miles.
Which has more cargo space?
The Toyota Prius Plug-in Hybrid, with 20 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
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