← all 2015 Roush Performance Stage 3 Mustang trims
2015 Roush Performance Stage 3 Mustang — 5.0L 8-cyl, S6 automatic, RWD
This 2015 Roush Performance Stage 3 Mustang (5.0L 8-cyl, S6 automatic, RWD) takes premium gasoline. PREMIUM
16
MPG combined (13 city / 23 hwy)
$4,800
est. fuel cost / year (EPA, 15k mi)
553 g/mi
tailpipe CO₂
The EPA lists this trim as premium because that's the fuel the manufacturer specified for its mileage test. Many such engines will run on regular with slightly lower power and MPG — but check your owner's manual to see whether premium is required or just recommended.
Other 2015 Roush Performance Stage 3 Mustang trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 5.0L 8-cyl, 6-spd manual, RWD | PREMIUM | 16 | $4,800 |
EPA fuel type: Premium · class: Midsize Cars · retrieved 2026-06-14.