2017 Mustang EcoBoost in Magnetic gray exterior paint is featured on this page of the 2017 Ford Mustang sales brochure. The text reads, EcoBoost 2.3L EcoBoost Turbocharged responsiveness. That's the essence of EcoBoost. With its twin-scroll single turbocharger and direct-injection technology, the 2.3L EcoBoost engine helps Mustang deliver best-in-class I-4 horsepower and torque. Going way beyond good looks, those vertical slots at the outer edges of the front fascia are wheel aero curtains - specifically designed to create a high-pressure region that holds airflow closer to the body and minimizes drag. One of the many telltail signs that every Mustang is built for speed.