2026 head-to-head · Midsize & Large SUV
2026 Hyundai Ioniq 9 vs Toyota Grand Highlander 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 2026 Hyundai Ioniq 9 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 $999 a year to fuel (92 MPGe), versus $1,292 for the 2026 Toyota Grand Highlander Hybrid (36 MPG). That's roughly $293 a year, or about $1,463 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 Ioniq 9
- Toyota Grand Highlander Hybrid
Side by side
| Hyundai Ioniq 9 | Toyota Grand Highlander Hybrid | |
|---|---|---|
| $999 | Your annual fuel cost | $1,292 |
| 92 MPGe | Combined efficiency | 36 MPG |
| 103 MPGe | City | 37 MPG |
| 81 MPGe | Highway | 34 MPG |
| 37 kWh | Electricity use (kWh/100 mi) | — |
| 335 mi | Driving range | — |
| 0 g/mi | Tailpipe CO₂ (g/mi) | 246 g/mi |
| 9/10 | EPA fuel economy score | 7/10 |
| 10/10 | EPA greenhouse gas score | 7/10 |
| 11.7 hrs | Charge time at 240V | — |
| Electric | Powertrain | Hybrid |
| Electricity | Fuel | Regular gasoline |
| Electric motor (160 kW) | Engine / motor | 2.5L 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 9 vs Toyota Grand Highlander Hybrid across model years
- Hyundai Ioniq 9
- Toyota Grand Highlander 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
Among 91 2026 midsize & large SUVs, the Hyundai Ioniq 9 ranks 14th and the Toyota Grand Highlander Hybrid 19th for lowest fuel cost.
Because the Hyundai Ioniq 9 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 Grand Highlander Hybrid; relying on DC fast chargers can erase it.
Frequently asked questions
Which is more fuel-efficient, the 2026 Hyundai Ioniq 9 or the 2026 Toyota Grand Highlander Hybrid?
Measured by cost to drive, the Hyundai Ioniq 9. The Hyundai Ioniq 9 is rated 92 MPGe combined and the Toyota Grand Highlander Hybrid 36 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Hyundai Ioniq 9 vs. the Toyota Grand Highlander Hybrid per year?
At 15,000 miles a year with 18¢/kWh electricity and $3.10/gal regular gas, about $999 for the Hyundai Ioniq 9 and $1,292 for the Toyota Grand Highlander Hybrid.
More 2026 comparisons
Hyundai Ioniq 9 vs…
Toyota Grand Highlander Hybrid vs…
Or compare the 2026 Hyundai Ioniq 9 with anything else: