Which Car Has

Roush Performance Stage 3 Mustang

Transmission, start-stop, premium fuel and flex-fuel by model year, 2020

TransmissionThe 2020 Roush Performance Stage 3 Mustang is offered with a 10-speed automatic or a 6-speed manual, depending on configuration.

Auto start-stopNo. EPA lists no auto start-stop on any 2020 Roush Performance Stage 3 Mustang configuration it tested.

Premium fuelEPA tested the 2020 Roush Performance Stage 3 Mustang on premium fuel; your owner's manual or fuel-door label is the authority.

Flex-fuel (E85)No. EPA does not list any 2020 Roush Performance Stage 3 Mustang configuration as a flex-fuel vehicle (FFV).

2020 at a glance

2 configurations tested by EPA

CVTNone
0 of 2
No CVT
ManualSome
1 of 2
6-speed
Auto start-stopNone
0 of 2
Premium fuelAll
2 of 2
EPA test fuel
Flex-fuel (E85)None
0 of 2
No FFV versions

EPA lists a manual transmission for the Roush Performance Stage 3 Mustang in these model years: 2020 (1 year of data from 2020–2020).

Roush Performance Stage 3 Mustang features by model year

Which Roush Performance Stage 3 Mustang model years have each feature. Each cell links to that year's configurations.
’20
CVT2020 CVT: None
Manual2020 Manual: Some
Automated manual2020 Automated manual: None
Automatic2020 Automatic: Some
Start-stop2020 Start-stop: None
Premium fuel2020 Premium fuel: All
Flex-fuel2020 Flex-fuel: None
All configurationsSome configurationsNoneNot reported by EPA

Configurations by year

2020 Roush Performance Stage 3 Mustang

2 configurations
EPA model nameEngineTransmissionDriveStart-stopEPA test fuelFlex-fuel
Stage 3 Mustang5.0L 8-cyl supercharged10-speed automaticS10Rear-WheelNoPremiumNo
Stage 3 Mustang5.0L 8-cyl supercharged6-speed manual6-spdRear-WheelNoPremiumNo

Check before you buy or refuel Confirm on the window sticker, owner's manual or with the dealer. Trims and options can differ from the configurations EPA tested.

About premium fuel EPA data shows the fuel a vehicle was tested on. It does not say whether premium is required or only recommended. Your owner's manual or fuel-door label is the authority.

Before using E85 Confirm the vehicle is a flex-fuel vehicle (FFV) in the owner's manual, or look for a yellow gas cap or an "FFV" badge. Not every version of a model is flex-fuel.

Source: U.S. EPA / Department of Energy vehicle data fromFuelEconomy.gov, data as of September 29, 2026.See how we classify vehicles.

More Roush Performance lists

Other Roush Performance models