2023 Rivian R1S 20 inch All-Terrain MPG & Specs — Real Fuel Cost
Quick answer
The 2023 Rivian R1S 20 inch All-Terrain gets an EPA-estimated 65/60 MPG (city/highway) and 63 MPG combined, with an estimated $1,200/year fuel cost.
The 2023 Rivian R1S 20 inch All-Terrain with the listed electricity engine returns an EPA-estimated 65 MPG in the city and 60 MPG on the highway, for a combined 63 MPG. This page summarizes the official EPA fuel-economy and emissions data for this configuration.
| Engine | — |
| Transmission | Automatic (A1) |
| Drive | All-Wheel Drive |
| Fuel type | Electricity |
| Vehicle class | Standard Sport Utility Vehicle 4WD |
| MPG — city | 65 |
| MPG — highway | 60 |
| MPG — combined | 63 |
| Annual fuel cost* | $1,200 |
| CO₂ tailpipe | — |
| EPA GHG score | 10/10 |
| Electric range | 274 mi |
How efficient is it?
As an all-electric vehicle, the 2023 Rivian R1S 20 inch All-Terrain is rated in MPGe rather than MPG, and running costs are dominated by electricity rather than fuel. That is about 109% better than the typical Standard Sport Utility Vehicle 4WD of its era (30 MPG class average), making it one of the more efficient choices in its class.
Fuel economy and running costs
At about $1,200 per year in fuel (EPA estimate, 15,000 mi/yr), fuel is a major part of the cost of owning the 2023 Rivian R1S 20 inch All-Terrain. Over five years that is roughly $6,000 at today's prices — before insurance, maintenance, and depreciation.
How to read these numbers
EPA figures come from standardized laboratory test cycles and are the same estimates shown on the vehicle's window sticker. Your real-world mileage depends on driving style, conditions, fuel grade, and maintenance. Use combined MPG and annual fuel cost to compare vehicles fairly.