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  • MY2020–2020

Roush Performance Stage 3 Mustang MPG & Fuel Cost by Year

1 model years · 2020–2020

15 MPG
Combined
13 MPG
City
20 MPG
Highway
Annual cost · MY2020 Stage 3 Mustang 5.0L 8-cyl supercharged RWD
$5,260

15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)

Roush Performance Stage 3 Mustang fuel economy at a glance

EPA has rated the Roush Performance Stage 3 Mustang for 1 model years, 2020 to 2020. Across those years its combined rating runs 14–15 MPG. The latest model year, 2020, has 2 configurations rated 14–15 MPG combined and costing $5,260–$5,640 a year to fuel at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2020 is the 2020 Stage 3 Mustang 5.0L 8-cyl supercharged RWD, at 15 MPG.

Roush Performance Stage 3 Mustang MPG by year

Roush Performance Stage 3 Mustang: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG) $/yr
2020 Generation page
2020 14–15 $5,260–$5,640

Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.

Roush Performance Stage 3 Mustang generations

1 generations between 2020 and 2020. Open one for the table of every model year and configuration.

2020 powertrain options

Gas · 5.0L
Combined
14–15 MPG
Per year
$5,260–$5,640
See gas configurations
EPA ratings: fueleconomy.gov file of Sep 29, 2026 · premium gasoline $5.36/gal (U.S. average, Sep 2026) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Frequently asked questions

What is the Roush Performance Stage 3 Mustang's gas mileage by year?

EPA combined ratings for the Roush Performance Stage 3 Mustang run 14–15 MPG across model years 2020 to 2020. The latest year, 2020, is rated 14–15 MPG.

Which Roush Performance Stage 3 Mustang model year has the best gas mileage?

The 2020 Roush Performance Stage 3 Mustang Stage 3 Mustang 5.0L 8-cyl supercharged RWD has the highest combined rating since 2020, at 15 MPG.

How much does a Roush Performance Stage 3 Mustang cost to fuel per year?

For MY2020, EPA-rated configurations cost $5,260–$5,640 a year to fuel, driving 15,000 miles at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient one costs $5,260.