Rivian R1S Dual Standard (20in) MPG by year — every rating on record
The Rivian R1S Dual Standard (20in) has a combined EPA fuel economy rating for 2 model years, from 2025 to 2026. Across those years its best rated version returned 79 mpg (2025) and its thirstiest returned 79 mpg (2025). The EPA record holds 2 configurations for this nameplate, most recently a Standard Sport Utility Vehicle 4WD.
In the EPA record this nameplate also appears as R1S Dual Standard (20in) and R1T Dual Standard (20in). The figures below cover every one of them.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2025 | 1 | 79 mpg | 79 mpg | #42 of 192 (79th pct) | Part-time 4-Wheel Drive | Electricity | Standard Sport Utility Vehicle 4WD |
| 2026 | 1 | 79 mpg | 79 mpg | #49 of 191 (75th pct) | Part-time 4-Wheel Drive | Electricity | Standard Sport Utility Vehicle 4WD |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The Rivian R1S Dual Standard (20in) placed highest in 2025 at #42 of 192, and lowest in 2026 at #49 of 191. It spent 2 of its 2 ranked years in the top half of its class.
Every configuration on record
All 2 configurations EPA lists for this nameplate, newest first.
| Year | Configuration | Engine detail | City | Highway | Combined | Gallons/yr | Barrels/yr | EPA fuel cost/yr | Range | CO2 g/mi | GHG |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | Part-time 4-Wheel Drive Automatic (A1) Electricity | EV | 85 | 72 | 79 | 145.6 | 0.1 | $950 | 258 mi | n/a | 10/10 |
| 2025 | Part-time 4-Wheel Drive Automatic (A1) Electricity | EV | 85 | 72 | 79 | 145.6 | 0.1 | $950 | 258 mi | n/a | 10/10 |
What R1S Dual Standard (20in) fuel costs over a year
At the EPA's 11,500 miles a year, the 2026 Rivian R1S Dual Standard (20in) burns 146 to 146 gallons depending on configuration. Below is what that costs at three pump prices, and how much more the thirstiest configuration costs than the most efficient one.
| Pump price | Most efficient | Thirstiest | Spread |
|---|---|---|---|
| $3.00/gal | $437 | $437 | $0 |
| $3.50/gal | $509 | $509 | $0 |
| $4.00/gal | $582 | $582 | $0 |
EPA’s own estimate for the 2026 model year is $950 to $950 a year in fuel, or $6,500 less than the average new vehicle over five years.
How it compares with other Standard Sport Utility Vehicle 4WD
Across the 317 nameplates EPA classifies as Standard Sport Utility Vehicle 4WD, the median best combined rating is 22 mpg. At 79 mpg the Rivian R1S Dual Standard (20in) is 57 mpg better the median, which is worth about $1,320 a year at $3.50 a gallon.
- All Standard Sport Utility Vehicle 4WD rankings — every nameplate in the class, best to worst.
Other Rivian nameplates
Every Rivian model compared → — all nameplates ranked by best combined rating, with what each one costs a year.