Roush Performance Stage 3 Mustang Engine Specifications

The 2020 Roush Performance Stage 3 Mustang is offered with 5.0L engines in 8-cylinder form, per EPA fuel-economy records.

Latest model year (2020):

The Roush Performance Stage 3 Mustang is available with 8 5.0L and Automatic (S10) (Rear-Wheel Drive).

Verifiedfueleconomy.gov · Verified August 11, 2026

Roush Performance Stage 3 Mustang Engine Specs — All Years

YearTrimCylindersDispl.TransmissionDriveFuel TypeVehicle Class
2020Config 1 of 2Auto (S10), 8 cyl, 5.0 L85.0LAutomatic (S10)Rear-Wheel DrivePremium GasolineSubcompact Cars
2020Config 2 of 2Man 6-spd, 8 cyl, 5.0 L85.0LManual 6-spdRear-Wheel DrivePremium GasolineSubcompact Cars

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 data analysis

How Roush Performance Stage 3 Mustang engine displacement varies

Across 2 configurations recorded for the 2020 Roush Performance Stage 3 Mustang, engine displacement runs from 5 litres to 5 litres. The strongest figure belongs to the 2020 Roush Performance Stage 3 Mustang (SIDI & PFI) at 5 litres, and the weakest to the 2020 car (SIDI & PFI) at 5 litres — a spread of 0%. The narrow spread means any year of the Roush Performance Stage 3 Mustang in this table behaves much like the others, so you can shop on price, condition and mileage rather than chasing a particular model year.

How to read this Roush Performance Stage 3 Mustang data

This page lists every 2020 Roush Performance Stage 3 Mustang record we hold for this measurement — 2 rows in total, one per configuration and model year rather than a single headline figure. Figures are published as the source agency records them: we do not round, average or interpolate missing years, and a year that is absent from the table is a year with no published measurement rather than a zero. Where a manufacturer offered several drivetrains or body styles in the same year, each appears on its own row, because those variants rarely share the same numbers.

Where these Roush Performance Stage 3 Mustang figures come from

Every value on this page is loaded from federal open data — EPA fuel economy submissions, NHTSA vehicle and crash-test records, and manufacturer specification filings — rather than dealer listings or copied editorial content. The Roush Performance Stage 3 Mustang record refreshes as the agencies publish, which typically means new model-year rows appear in the autumn and crash-test results follow through the model year as vehicles are tested. Because certification data is filed per configuration, treat any single headline number for this vehicle with caution: the figure that applies to a specific car depends on its engine, drivetrain, body style and model year, all of which are listed separately above. If a number here disagrees with a brochure, the brochure is usually quoting the best available configuration rather than the one being sold.

Frequently Asked Questions About Stage 3 Mustang Engine Specs

What engine does the Roush Performance Stage 3 Mustang have?

The Roush Performance Stage 3 Mustang is available with 8 cylinder engines ranging up to 5.0L. Transmission and drivetrain options vary by trim. See the full table above.

Is the Roush Performance Stage 3 Mustang available with all-wheel drive?

Check the drive column in the table above to see available drivetrain configurations.

View full Roush Performance Stage 3 Mustang specs

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