2026 head-to-head · Midsize & Large SUV
2026 BMW iX vs Rivian R1S
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 BMW iX is the cheaper one to run. Driving 15,000 miles a year with 18¢/kWh electricity, it costs about $937 a year to fuel (97 MPGe), versus $1,066 for the 2026 Rivian R1S (85 MPGe). That's roughly $130 a year, or about $648 over five years.
Your numbers
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Fuel cost over 10 years
- BMW iX
- Rivian R1S
Side by side
| BMW iX | Rivian R1S | |
|---|---|---|
| $937 | Your annual fuel cost | $1,066 |
| 97 MPGe | Combined efficiency | 85 MPGe |
| 99 MPGe | City | 94 MPGe |
| 94 MPGe | Highway | 77 MPGe |
| 34.7 kWh | Electricity use (kWh/100 mi) | 39.5 kWh |
| 364 mi | Driving range | 329 mi |
| 0 g/mi | Tailpipe CO₂ (g/mi) | 0 g/mi |
| 9/10 | EPA fuel economy score | 9/10 |
| 10/10 | EPA greenhouse gas score | 10/10 |
| 11 hrs | Charge time at 240V | 12 hrs |
| Electric | Powertrain | Electric |
| Electricity | Fuel | Electricity |
| Electric motors (420 kW) | Engine / motor | Electric motor (264 kW) |
| Single-speed | Transmission | Single-speed |
| 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.
BMW iX vs Rivian R1S across model years
- BMW iX
- Rivian R1S
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 BMW iX goes farther between stops: about 364 miles on a charge, compared with 329 miles for the Rivian R1S.
Among 91 2026 midsize & large SUVs, the BMW iX ranks 8th and the Rivian R1S 17th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2026 BMW iX or the 2026 Rivian R1S?
Measured by cost to drive, the BMW iX. The BMW iX is rated 97 MPGe combined and the Rivian R1S 85 MPGe (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 BMW iX vs. the Rivian R1S per year?
At 15,000 miles a year with 18¢/kWh electricity, about $937 for the BMW iX and $1,066 for the Rivian R1S.
Which has more range?
The BMW iX: about 364 miles versus 329 miles.
BMW iX vs Rivian R1S in other years
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