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Roush Performance

Roush Performance · model year 2020

2020 Roush Performance Stage 3 Mustang

Subcompact · Rear-Wheel Drive · Gas · EPA class: Subcompact Cars

EPA figures · 2020fueleconomy.gov
14MPG combined
12/18MPG city / highway
$5,850fuel a year
618 g CO₂ per mile 5.0 L 8-cyl supercharged Automatic (S10)
This car on fueleconomy.gov, read 2 October 2026. Your own figures depend on how and where you drive.

Where it places

The CarCody take

The 2020 Roush Performance Stage 3 Mustang is a gasoline-powered subcompact car with rear-wheel drive, a 5.0-liter supercharged eight-cylinder engine, and an automatic S10 transmission. Its EPA rating is 14 MPG combined, split between 12 city and 18 highway. EPA lists annual fuel cost at $5,850 and tailpipe emissions at 618 grams per mile.

Good to know

  • Supercharged 5.0-liter 8-cylinder engine
  • Rear-wheel drive
  • 18 MPG highway rating
  • Automatic S10 transmission

Watch for

  • 14 MPG combined fuel economy
  • 12 MPG city rating
  • EPA annual fuel cost of $5,850
  • 618 grams of CO2 per mile

Who it suits. Drivers seeking a rear-wheel-drive supercharged V8 car Owners who can budget for high gasoline use Mostly highway driving at 18 MPG

The 2020 Roush Performance Stage 3 Mustang is a specialized choice for drivers who want a supercharged eight-cylinder engine in a rear-wheel-drive car. Its 14 MPG combined rating sets a high fuel-use baseline, and the EPA's $5,850 annual estimate is central to ownership planning. Highway use is kinder at 18 MPG, while city travel drops to 12 MPG. If those running costs fit your driving, the powertrain specification is clear and distinctive.

What it is

The 2020 Stage 3 Mustang is a gasoline car from Roush Performance. It uses rear-wheel drive and sits in the EPA's Subcompact Cars class. See other Roush Performance cars.

Its powertrain pairs a 5.0-liter supercharged 8-cylinder engine with an automatic S10 transmission.

The numbers

The figure to plan around is 14 MPG combined. EPA breaks that into 12 MPG in city driving and 18 MPG on the highway.

That spread means stop-and-go trips use more fuel than steady highway travel. The car's official tailpipe output is 618 grams of CO2 per mile.

What it costs to run

EPA estimates $5,850 in annual fuel cost for this Mustang. It runs on gasoline, so your fuel spending follows how much city and highway driving you do and the price at the pump.

How it compares

Within its own EPA figures, highway economy is 6 MPG higher than city economy. The 14 MPG combined rating is the useful middle number for mixed driving.

The subcompact-car classification, rear-wheel-drive layout, and gasoline V8 setup distinguish its specification from cars built around smaller engines or other drivetrains.

Who it suits

This car suits a buyer who wants a rear-wheel-drive car with a supercharged 5.0-liter 8-cylinder engine and accepts a 14 MPG combined rating.

It also fits drivers whose use includes enough highway travel to benefit from the 18 MPG highway figure, while recognizing that city driving is rated at 12 MPG.

Trade-offs

The engine and rear-wheel-drive layout come with a clear fuel penalty: 12 MPG city, 18 MPG highway, and $5,850 in estimated yearly fuel cost.

Its automatic S10 transmission keeps the powertrain specification straightforward.

Verdict

Choose the 2020 Roush Performance Stage 3 Mustang if its supercharged V8, rear-wheel drive, and automatic transmission matter more to you than fuel economy. Budget for substantial gasoline use, especially in town, where the EPA rating falls to 12 MPG. The 18 MPG highway figure makes longer steady trips less costly than urban driving, but the combined result remains 14 MPG.

Every figure on record

Efficiency
Combined MPG
14 MPG
City MPG
12 MPG
Highway MPG
18 MPG
Running cost
Annual fuel cost
$5,850
Tailpipe CO₂
618 g per mile
The car
Model year
2020
Body
Car
EPA size class
Subcompact Cars
Drive
Rear-Wheel Drive
Powertrain
Engine
5.0 L 8-cyl supercharged
Transmission
Automatic (S10)
Fuel
Gasoline

Questions

What is the 2020 Roush Performance Stage 3 Mustang's combined MPG?

EPA rates it at 14 MPG combined.

What are its city and highway MPG figures?

It is rated at 12 MPG in the city and 18 MPG on the highway.

How much fuel cost does EPA estimate each year?

EPA lists an annual fuel cost of $5,850.

What engine is in this Mustang?

It has a 5.0-liter supercharged 8-cylinder gasoline engine.

Does it have rear-wheel drive?

Yes. The Stage 3 Mustang uses rear-wheel drive.

What transmission does it use?

The powertrain uses an automatic S10 transmission.

What is its EPA vehicle class?

EPA classifies it as a Subcompact Car.

How much tailpipe CO2 does it emit?

Its listed tailpipe output is 618 grams of CO2 per mile.

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