2023 Rivian R1S 21 inch Performance Dual Large: MPG and fuel economy
The 2023 Rivian R1S 21 inch Performance Dual Large is a fully electric vehicle rated at 78 MPGe combined by the U.S. Environmental Protection Agency. It has an EPA-rated driving range of 352 miles on a full charge.
This page collects every fuel-economy figure the EPA publishes for the 2023 Rivian R1S 21 inch Performance Dual Large. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain.
Key takeaways
- Returns 157% better combined MPG than the average car in the Standard Sport Utility Vehicle 4WD class for the 2023 model year (30.4 MPG class average).
- The most efficient car in the Standard Sport Utility Vehicle 4WD class for the 2023 model year is the Tesla Model X at 102 MPG.
- EPA estimates this car saves around $6,000 in fuel over five years compared with an average new vehicle of the same model year.
- Has an EPA-rated electric driving range of 352 miles, which is above the typical range for new electric vehicles.
Fuel economy at a glance
These are the EPA's official ratings for the 2023 Rivian R1S 21 inch Performance Dual Large. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.
Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).
| Combined MPG | 78 MPG |
| City MPG | 82 MPG |
| Highway MPG | 74 MPG |
| Annual fuel cost | $950 |
| Tailpipe CO₂ | — |
| Fuel type | Electricity |
How the 2023 Rivian R1S 21 inch Performance Dual Large compares
The 2023 Rivian R1S 21 inch Performance Dual Large returns 78 combined MPG. Cars in the Standard Sport Utility Vehicle 4WD class for the same model year average 30.4 MPG, which puts this car ahead of the class average by about 157%.
The most efficient car in the Standard Sport Utility Vehicle 4WD class for the 2023 model year is the Tesla Model X at 102 MPG. The bar chart below puts the Rivian R1S 21 inch Performance Dual Large alongside the class best and the class average so you can see the full picture.
For broader context, the average new car of the 2023 model year (across all classes) returns 33.7 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 2023 model year is on its own page.
Annual fuel cost across driving patterns
The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for electricity, which is $0.15/kilowatt-hour. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.
The table below scales the EPA's number to three common driving patterns. The combined MPGe and the reference electricity price stay constant, only the annual mileage changes. Charging at home rather than at a public DC fast charger usually lowers the real cost below the EPA's published figure.
| Driving pattern | Estimated annual fuel cost |
|---|---|
| Light driver, 7,500 miles per year | $475 |
| Average driver, 15,000 miles per year | $950 |
| Heavy driver, 25,000 miles per year | $1,583 |
Compare against other Standard Sport Utility Vehicle 4WD for 2023
If you are cross-shopping the 2023 Rivian R1S 21 inch Performance Dual Large, the most useful comparison is against the other cars in the Standard Sport Utility Vehicle 4WD class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.
The Tesla Model X leads this group at 102 MPG, 24 MPG ahead of the 2023 Rivian R1S 21 inch Performance Dual Large.
Specifications
The 2023 Rivian R1S 21 inch Performance Dual Large is a fully electric vehicle. It is powered by 496 kw acpm. The EPA rates its driving range at 352 miles.
Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.
- Vehicle class
- Standard Sport Utility Vehicle 4WD
- Transmission
- Automatic (A1)
- Drivetrain
- Part-time 4-Wheel Drive
- Fuel type
- Electricity
- Electric motor
- 496 kW ACPM
- EV range
- 352 miles
- Annual petroleum use
- 0.1 barrels per year
Common questions about the 2023 Rivian R1S 21 inch Performance Dual Large
Quick answers to the questions people most often search for when looking up the 2023 Rivian R1S 21 inch Performance Dual Large.
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Is the 2023 Rivian R1S 21 inch Performance Dual Large fuel efficient?
Yes. The 2023 Rivian R1S 21 inch Performance Dual Large returns 78 combined MPG, which beats the average car in the Standard Sport Utility Vehicle 4WD class for the same model year by about 157%. -
What MPG does the 2023 Rivian R1S 21 inch Performance Dual Large get?
The EPA rates the 2023 Rivian R1S 21 inch Performance Dual Large at 78 combined MPG, 82 MPG in city driving, and 74 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is. -
How much does it cost to fuel a 2023 Rivian R1S 21 inch Performance Dual Large per year?
The EPA estimates an annual fuel cost of $950 for the 2023 Rivian R1S 21 inch Performance Dual Large. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade. -
Does the 2023 Rivian R1S 21 inch Performance Dual Large use gasoline?
No. The 2023 Rivian R1S 21 inch Performance Dual Large is fully electric and runs on grid electricity. The MPGe figure on this page converts electricity use into a gasoline-equivalent so you can compare it directly to a regular car. -
How much CO₂ does the 2023 Rivian R1S 21 inch Performance Dual Large emit?
The 2023 Rivian R1S 21 inch Performance Dual Large produces zero tailpipe emissions because it runs entirely on electricity. The full carbon footprint of charging it depends on how the electricity on your local grid is generated, which varies a lot from one state to another. -
What is the difference between the city and highway MPG of the 2023 Rivian R1S 21 inch Performance Dual Large?
City driving returns 82 MPG and highway driving returns 74 MPG. A flat (or city-better) split is the signature of a hybrid or electric drivetrain, where regenerative braking recovers energy that would otherwise be lost in stop-start city traffic. -
What motor does the 2023 Rivian R1S 21 inch Performance Dual Large use?
The 2023 Rivian R1S 21 inch Performance Dual Large uses 496 kW ACPM. Electric motors do not have a displacement or cylinder count the way a combustion engine does, so EPA reporting focuses on the motor type and battery system instead. -
What transmission and drivetrain does the 2023 Rivian R1S 21 inch Performance Dual Large have?
The 2023 Rivian R1S 21 inch Performance Dual Large comes with a automatic (a1) transmission and part-time 4-wheel drive. -
How does the 2023 Rivian R1S 21 inch Performance Dual Large compare to the best car in its class?
The most efficient car in the Standard Sport Utility Vehicle 4WD class for the 2023 model year is the Tesla Model X at 102 combined MPG. The Rivian R1S 21 inch Performance Dual Large returns 78 MPG, a gap of 24 MPG. If you are comparing on fuel economy alone, the class leader is worth a look. -
What is the EV range of the 2023 Rivian R1S 21 inch Performance Dual Large?
The EPA rates the 2023 Rivian R1S 21 inch Performance Dual Large for 352 miles of electric driving range on a full charge. That sits above the typical range for new EVs, putting the car comfortably in the long-distance bracket.
Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.