Mustang tuner Jack Roush continued his work with the S-197 II - 5th Gen Mustang (2010 to 2014), offering several levels of modification, trim and limited edition variants. The most consistently offered packages were the RS (V6), Stage 1 (Appearance), Stage 2 (Handling) and Stage 3 (Supercharged).

Stage 3 is considered the "halo" of the offered packages and included a supercharged V8, along with suspension, interior, and exterior modifications. In 2014, the Stage 3 Roush could be further modified with upgrade kits boosting horsepower up to 675 in Phase 3. Most commonly, the ROUSH Mustangs were available as a coupe with a 5-speed manual transmission but convertibles and automatic transmissions were produced in lower numbers.

For the 2015 model year, ROUSH Performance would continue their modifications in the 6th Gen (2015 to 2022) Mustangs. Note: these cars are considered "Highly Original" if they preserve the specifications in their original ROUSH package.