2024 head-to-head · Midsize & Large SUV
2024 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 2024 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 $1,701 a year to fuel (50 MPGe), versus $1,939 for the 2024 Mazda CX-90 Plug-in Hybrid (56 MPGe + 25 MPG). That's roughly $238 a year, or about $1,190 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 | |
|---|---|---|
| $1,701 | Your annual fuel cost | $1,939 |
| 50 MPGe | Combined efficiency | 56 MPGe + 25 MPG |
| 55 MPGe | City | 53 MPGe / 24 MPG |
| 45 MPGe | Highway | 61 MPGe / 27 MPG |
| 63 kWh | Electricity use (kWh/100 mi) | 58 kWh |
| 298 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 |
| 10.5 hrs | Charge time at 240V | 2.1 hrs |
| Electric | Powertrain | Plug-in hybrid |
| Electricity | Fuel | Premium gas + electricity |
| Electric motor (214 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 298 miles for the GMC Hummer EV.
Among 79 2024 midsize & large SUVs, the GMC Hummer EV ranks 17th and the Mazda CX-90 Plug-in Hybrid 23rd 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 2024 GMC Hummer EV or the 2024 Mazda CX-90 Plug-in Hybrid?
Measured by cost to drive, the GMC Hummer EV. The GMC Hummer EV is rated 50 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 2024 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 $1,701 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 298 miles.
GMC Hummer EV vs Mazda CX-90 Plug-in Hybrid in other years
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