Rivian R1T vs GMC Hummer EV
The Rivian R1T is the more efficient of the two: it reaches 87 mpg combined versus 53 mpg for the GMC Hummer EV, a 34 mpg advantage and costs about $550 less per year to fuel.
Across 4 measured categories, the Rivian R1T leads in 4. Figures are EPA test data, not manufacturer claims.
2022–2027
Rivian R1T
Standard Pickup Trucks 4WD · 91 configurations
2024–2025
GMC Hummer EV
Standard Pickup Trucks 4WD · 16 configurations
Head-to-head specifications
| Metric | Rivian R1T | GMC Hummer EV |
|---|---|---|
| Best combined MPG | 87 mpg ✓ | 53 mpg |
| Best city MPG | 94 mpg ✓ | 59 mpg |
| Best highway MPG | 80 mpg ✓ | 48 mpg |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $850 ✓ | $1,400 |
| Lowest CO2 output | Not available | Not available |
| Engines offered | Not available | Not available |
| Transmissions | Automatic (A1) | Automatic (A1) |
| Drivetrains | 4-Wheel Drive, Part-time 4-Wheel Drive, All-Wheel Drive | All-Wheel Drive |
| Fuel types | Electricity | Electricity |
| EPA class | Standard Pickup Trucks 4WD | Standard Pickup Trucks 4WD |
| Years covered | 2022–2027 | 2024–2025 |
| Configurations on record | 91 | 16 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
R1T vs Hummer EV: common questions
Which is better on gas, the Rivian R1T or the GMC Hummer EV?
The Rivian R1T is the more efficient of the two: it reaches 87 mpg combined versus 53 mpg for the GMC Hummer EV, a 34 mpg advantage and costs about $550 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the Rivian R1T runs about $850 a year in fuel at its most efficient configuration, versus about $1,400 for the GMC Hummer EV — a difference of roughly $550 per year.
What engines do the R1T and Hummer EV offer?
Rivian R1T: no engine data on record. GMC Hummer EV: no engine data on record.
Are they in the same vehicle class?
Yes — the EPA classifies both the Rivian R1T and the GMC Hummer EV as Standard Pickup Trucks 4WD, so they compete directly.
More R1T comparisons
Comparison id: rivian-r1t-vs-gmc-hummer-ev