Roush Performance Stage 3 Mustang MPG & Fuel Economy

The 2020 Roush Performance Stage 3 Mustang gets up to 15 MPG combined (13 city / 20 highway) in EPA testing.

Latest model year (2020):

The Roush Performance Stage 3 Mustang gets up to 15 MPG combined (13 city / 20 highway) in the Man 6-spd, 8 cyl, 5.0 L trim.

Verifiedfueleconomy.gov · Verified August 11, 2026

Roush Performance Stage 3 Mustang MPG — All Years

YearTrimEngineFuelCity (MPG)Hwy (MPG)Combined (MPG)
2020Auto (S10), 8 cyl, 5.0 L8 5.0LPremium Gasoline121814
2020Man 6-spd, 8 cyl, 5.0 L8 5.0LPremium Gasoline132015

Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.

Roush Performance Stage 3 Mustang MPG FAQ

What is the MPG of the Roush Performance Stage 3 Mustang?

The Roush Performance Stage 3 Mustang gets up to 15 MPG combined (13 city / 20 highway) in the 2020 model year. Fuel economy varies by engine and trim — see the full table above for details.

Which Roush Performance Stage 3 Mustang trim has the best fuel economy?

The Man 6-spd, 8 cyl, 5.0 L trim offers the best combined fuel economy at 15 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.

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