2025 head-to-head · Midsize & Large SUV
2025 GMC Hummer EV vs Mazda CX-90 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.
4WD · 2.5L 4-cyl · 8-speed automatic · 56 MPGe + 25 MPG
The 2025 GMC Hummer EV is the cheaper one to run. Driving 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, it costs about $1,725 a year to fuel (53 MPGe), versus $1,939 for the 2025 Mazda CX-90 Plug-in Hybrid (56 MPGe + 25 MPG). That's roughly $214 a year, or about $1,069 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
- GMC Hummer EV
- Mazda CX-90 Plug-in Hybrid
Side by side
| GMC Hummer EV | Mazda CX-90 Plug-in Hybrid | |
|---|---|---|
| $1,725 | Your annual fuel cost | $1,939 |
| 53 MPGe | Combined efficiency | 56 MPGe + 25 MPG |
| 59 MPGe | City | 53 MPGe / 24 MPG |
| 47 MPGe | Highway | 61 MPGe / 27 MPG |
| 63.9 kWh | Electricity use (kWh/100 mi) | 58 kWh |
| 318 mi | Driving range | 490 mi |
| — | All-electric range | 26 mi |
| 0 g/mi | Tailpipe CO₂ (g/mi) | 168 g/mi |
| 8/10 | EPA fuel economy score | 7/10 |
| 10/10 | EPA greenhouse gas score | 8/10 |
| 11.2 hrs | Charge time at 240V | 2.1 hrs |
| Electric | Powertrain | Plug-in hybrid |
| Electricity | Fuel | Premium gas + electricity |
| Electric motors (410 kW) | Engine / motor | 2.5L 4-cyl |
| Single-speed | Transmission | 8-speed automatic |
| AWD | Drivetrain | 4WD |
✓ 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.
GMC Hummer EV vs Mazda CX-90 Plug-in Hybrid across model years
- GMC Hummer EV
- Mazda CX-90 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 Mazda CX-90 Plug-in Hybrid goes farther between stops: about 490 miles on a full tank and charge, compared with 318 miles for the GMC Hummer EV.
Among 94 2025 midsize & large SUVs, the GMC Hummer EV ranks 23rd and the Mazda CX-90 Plug-in Hybrid 32nd for lowest fuel cost.
Because the GMC Hummer EV 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 Mazda CX-90 Plug-in Hybrid; relying on DC fast chargers can erase it.
Frequently asked questions
Which is more fuel-efficient, the 2025 GMC Hummer EV or the 2025 Mazda CX-90 Plug-in Hybrid?
Measured by cost to drive, the GMC Hummer EV. The GMC Hummer EV is rated 53 MPGe combined and the Mazda CX-90 Plug-in Hybrid 56 MPGe + 25 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 GMC Hummer EV vs. the Mazda CX-90 Plug-in Hybrid per year?
At 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, about $1,725 for the GMC Hummer EV and $1,939 for the Mazda CX-90 Plug-in Hybrid.
Which has more range?
The Mazda CX-90 Plug-in Hybrid: about 490 miles versus 318 miles.
GMC Hummer EV vs Mazda CX-90 Plug-in Hybrid in other years
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