2021 · Midsize Car · Plug-in hybrid
2021 Toyota Prius Prime MPG & fuel economy
The 2021 Toyota Prius Prime is a midsize car with one EPA-rated configuration. This plug-in hybrid covers about 25 miles on electricity (133 MPGe), then returns 54 MPG on gas. Efficiency is unchanged from the 2020 model. Among 54 midsize cars rated for 2021, it ranks 3rd for lowest fuel cost. At 15,000 miles a year with 18¢/kWh electricity and $3.10/gal regular gas, it costs about $763 a year to fuel.
What will it cost you?
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Fuel average
The 2021 Toyota Prius Prime's fuel average is 23.0 km/L (4.4 L/100 km), or 54 MPG combined: 23.4 km/L in the city and 22.5 km/L on the highway. On electricity it is rated 133 MPGe.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City (gas) | 55 | 23.4 | 4.3 |
| Highway (gas) | 53 | 22.5 | 4.4 |
| Combined (gas) | 54 | 23.0 | 4.4 |
How it ranks among 2021 Midsize Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
Prius Prime MPG across model years
Full history →1 EPA-rated configuration
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| FWD · 1.8L 4-cyl · CVT Prius Prime |
Plug-in hybrid | 145 MPGe + 55 MPG | 121 MPGe + 53 MPG | 133 MPGe + 54 MPG | 640 mi | $763 |
Specs (most efficient configuration)
- Fuel
- Regular gas + electricity
- Engine / motor
- 1.8L 4-cyl
- Transmission
- CVT
- Drivetrain
- FWD
- Electricity use
- 25 kWh/100 mi
- All-electric range
- 25 mi
- Charge time (240V)
- 2 hrs
- Passenger volume
- 91 cu ft
- Cargo volume
- 20 cu ft
- Tailpipe CO₂
- 78 g/mi
- EPA fuel economy score
- 10/10
- EPA greenhouse gas score
- 10/10
2021 Toyota Prius Prime vs. rivals
Compare the 2021 Prius Prime
With any other car from any year, including other Prius Prime model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2021 Toyota Prius Prime?
Up to 133 MPGe + 54 MPG combined.
What fuel does the 2021 Toyota Prius Prime use?
Regular gas + electricity.
What is the fuel average in km/L for the 2021 Toyota Prius Prime?
The 2021 Toyota Prius Prime's fuel average is 23.0 km/L (4.4 L/100 km), or 54 MPG combined: 23.4 km/L in the city and 22.5 km/L on the highway. On electricity it is rated 133 MPGe.
How much does it cost to fuel the 2021 Toyota Prius Prime per year?
About $763 at 15,000 miles a year with 18¢/kWh electricity and $3.10/gal regular gas, or $5.08 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.