Toyota Prius Eco
56 MPG The 2022 Toyota Prius Eco is EPA-rated at 56 MPG combined (58 city / 53 highway). Over 15,000 miles a year that is about 268 gallons, $857 a year in fuel, or $0.057 per mile at $3.20/gal.
Across its full 2016–2022 run it averages 56 MPG, essentially flat across 7 model years.
Running cost at different fuel prices and mileages
The figure everyone actually wants, and the one the EPA does not publish — because it depends on a fuel price no agency will commit to.
| Fuel price | Per mile | 10,000 mi/yr | 15,000 mi/yr | 20,000 mi/yr |
|---|---|---|---|---|
| $2.50/gal | $0.045 | $446 | $670 | $893 |
| $3.00/gal | $0.054 | $536 | $804 | $1071 |
| $3.20/gal | $0.057 | $571 | $857 | $1143 |
| $3.50/gal | $0.063 | $625 | $937 | $1250 |
| $4.00/gal | $0.071 | $714 | $1071 | $1429 |
| $4.50/gal | $0.080 | $804 | $1205 | $1607 |
| $5.00/gal | $0.089 | $893 | $1339 | $1786 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2022 | 56 MPG | 58 | 53 | $1100 | 158 | 1 |
| 2021 | 56 MPG | 58 | 53 | $1100 | 158 | 1 |
| 2020 | 56 MPG | 58 | 53 | $1100 | 158 | 1 |
| 2019 | 56 MPG | 58 | 53 | $1100 | 158 | 1 |
| 2018 | 56 MPG | 58 | 53 | $1100 | 158 | 1 |
| 2017 | 56 MPG | 58 | 53 | $1100 | 158 | 1 |
| 2016 | 56 MPG | 58 | 53 | $1100 | 158 | 1 |
Where a model year offered several engines or drivetrains, the figure is the average across all EPA-tested trims that year — the trim count is shown so you can see how much averaging is involved.
How it compares in its class
Among the 261 midsize cars models tracked here, the Toyota Prius Eco ranks 11 on current figures, against a class average of 27.1 MPG.
Closest more-efficient alternatives in the same class: Toyota Prius (57), Honda Clarity FCV (68), Porsche Taycan Turbo S Cross Turismo (77), Porsche Taycan Turbo Cross Turismo (78), Porsche Taycan 4S Cross Turismo (80).
Tailpipe CO₂ is rated at 158 grams per mile, which works out to roughly 2.4 tonnes a year at 15,000 miles.
Questions
What MPG does the Toyota Prius Eco get?
The 2022 Toyota Prius Eco is rated at 56 MPG combined by the EPA — 58 city and 53 highway. Across all 7 model years in the database it averages 56 MPG, ranging from 56 to 56 depending on year and trim.
How much does a Toyota Prius Eco cost in fuel per year?
At 56 MPG and 15,000 miles a year, it burns about 268 gallons — roughly $857 a year with fuel at $3.20 a gallon, or $0.057 per mile. The EPA's own published annual figure for the 2022 model is $1100.
Has the Toyota Prius Eco become more efficient over time?
Barely. It sits at 56 MPG today against 56 in 2016 — essentially flat across 7 model years, with efficiency gains offset by weight and power creep.
Is the Toyota Prius Eco efficient for its class?
It ranks 11 of 261 in the Midsize Cars class on current figures, against a class average of 27.1 MPG. That is 28.9 better than typical for the class.
EPA test figures from fueleconomy.gov. Cost per mile and annual fuel spend are computed at a reference price of $3.20 per gallon — use your own price. Estimates based on official test figures and average fuel prices. Real-world consumption varies with driving style, load, terrain and maintenance.