Roush Performance Stage 3 Mustang Fuel Economy (MPG)
What is the real-world gas mileage of a 2020 Roush Performance Stage 3 Mustang?
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.
Roush Performance Stage 3 Mustang MPG — All Years
| Year | Trim | Engine | Fuel | City (MPG) | Hwy (MPG) | Combined (MPG) |
|---|---|---|---|---|---|---|
| 2020Config 1 of 2 | Auto (S10), 8 cyl, 5.0 L | 8 5.0L | Premium Gasoline | 12 | 18 | 14 |
| 2020Config 2 of 2 | Man 6-spd, 8 cyl, 5.0 L | 8 5.0L | Premium Gasoline | 13 | 20 | 15 |
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 combined fuel economy varies
Across 2 configurations recorded for the 2020 Roush Performance Stage 3 Mustang, combined fuel economy runs from 14 MPG to 15 MPG. The strongest figure belongs to the 2020 Roush Performance Stage 3 Mustang (Man 6-spd, 8 cyl, 5.0 L) at 15 MPG, and the weakest to the 2020 car (Auto (S10), 8 cyl, 5.0 L) at 14 MPG — a spread of 7%. 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.
Official Factory Specs vs. AutoSpecData Expert Benchmarks
The EPA highway loop never holds interstate speed. Here is what the same engine does when you sit on the cruise control.
| Cruise speed | EPA highway spec | AutoSpecData adjusted MPG | Fuel you lose |
|---|---|---|---|
| 60 mph | 20 MPG | 20 MPG | 0% |
| 65 mph | 20 MPG | 18.6 MPG | 7% |
| 70 mph | 20 MPG | 17.4 MPG | 13% |
| 75 mph | 20 MPG | 16.2 MPG | 19% |
| 80 mph | 20 MPG | 15.1 MPG | 25% |
Our Real-World Speed MPG Adjuster re-scales the Roush Performance Stage 3 Mustang EPA highway result with a quadratic drag term (mpg = hwy ÷ (1 + k·(v² − 60²)/60²), k = 0.55 for trucks, SUVs and vans, 0.42 for cars). Wind, roof racks, and a heavy right foot make it worse, never better.
Frequently Asked Questions About Stage 3 Mustang MPG
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.
MPG for other Roush Performance models
MPG on other brands
- Acura ZDX MPG
- Alfa Romeo Giulia MPG
- Aston Martin Rapide MPG
- Audi e-tron S MPG
- Bentley Continental Supersports MPG
- BMW X3 MPG
- Bugatti Mistral MPG
- Bugatti Rimac Nevera MPG
- Buick Verano MPG
- BYD e6 MPG
- Cadillac CTS MPG
- Chevrolet Colorado MPG
- Chrysler 200 MPG
- Dodge Dart MPG
- Ferrari 296 Speciale A MPG
- Fiat 124 Spider MPG
- Fisker Ocean MPG
- Ford Ranger MPG
- Genesis G80 MPG
- GMC Acadia MPG
- Honda Fit MPG
- Hyundai Tucson MPG
- INEOS Automotive Grenadier MPG
- Infiniti Q70 MPG
- Jaguar F-Pace MPG
- Jeep Wrangler MPG
- Karma Revero MPG
- Kia Sportage MPG
- Koenigsegg Regera MPG
- Lamborghini Urus MPG
- Land Rover LR4 MPG
- Lexus RC MPG
- Lincoln Nautilus MPG
- Lordstown Endurance MPG
- Lotus Emira MPG
- Lucid Air MPG
- Maserati Quattroporte MPG
- Mazda CX-3 MPG
- McLaren Automotive 675LT Coupe MPG
- Mercedes-Benz E-Class MPG
- MINI Paceman MPG
- Mitsubishi Lancer MPG
- Mobility Ventures LLC MV-1 MPG
- Nissan Versa MPG
- Pagani Huayra Coupe MPG
- Polestar 2 MPG
- Porsche Macan MPG
- Ram 1500 MPG
- Rivian R1T MPG
- Rolls-Royce Cullinan MPG
- RUF Automobile T12/CTR3/CTR Anniversary MPG
- Scion iA MPG
- smart fortwo MPG
- STI S209 MPG
- Subaru Uncharted MPG
- Tesla Model S MPG
- Toyota Prius MPG
- Vinfast VF 8 MPG
- Volkswagen Arteon MPG
- Volvo S90 MPG
Compare across every brand
All Roush Performance Stage 3 Mustang specifications
- Roush Performance Stage 3 Mustang MPG
- Roush Performance Stage 3 Mustang Engine Specs
- Roush Performance Stage 3 Mustang Fuel Cost
- Roush Performance Stage 3 Mustang Transmission
- Roush Performance Stage 3 Mustang Drivetrain
- Roush Performance Stage 3 Mustang Vehicle Class
- Roush Performance Stage 3 Mustang Maintenance