Rivian R1S vs BMW iX
The BMW iX is the more efficient of the two: it reaches 97 mpg combined versus 85 mpg for the Rivian R1S, a 12 mpg advantage and costs about $100 less per year to fuel.
Across 4 measured categories, the BMW iX leads in 4. Figures are EPA test data, not manufacturer claims.
2022–2027
Rivian R1S
Standard Sport Utility Vehicle 4WD · 94 configurations
2022–2026
BMW iX
Standard Sport Utility Vehicle 4WD · 35 configurations
Head-to-head specifications
| Metric | Rivian R1S | BMW iX |
|---|---|---|
| Best combined MPG | 85 mpg | 97 mpg ✓ |
| Best city MPG | 94 mpg | 99 mpg ✓ |
| Best highway MPG | 77 mpg | 94 mpg ✓ |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $900 | $800 ✓ |
| 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 Sport Utility Vehicle 4WD | Standard Sport Utility Vehicle 4WD |
| Years covered | 2022–2027 | 2022–2026 |
| Configurations on record | 94 | 35 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
R1S vs iX: common questions
Which is better on gas, the Rivian R1S or the BMW iX?
The BMW iX is the more efficient of the two: it reaches 97 mpg combined versus 85 mpg for the Rivian R1S, a 12 mpg advantage and costs about $100 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the BMW iX runs about $800 a year in fuel at its most efficient configuration, versus about $900 for the Rivian R1S — a difference of roughly $100 per year.
What engines do the R1S and iX offer?
Rivian R1S: no engine data on record. BMW iX: no engine data on record.
Are they in the same vehicle class?
Yes — the EPA classifies both the Rivian R1S and the BMW iX as Standard Sport Utility Vehicle 4WD, so they compete directly.
More R1S comparisons
Comparison id: rivian-r1s-vs-bmw-ix