A long list of standard features includes napa leather, AMG adaptive suspension, LED headlights and a Burmester surround sound system.
The GT S is equipped with a 4.0-liter bi-turbo V8 engine that delivers 503 horsepower and 479 pound-feet of torque.
A base 2017 Mercedes-AMG GT model arrives at dealerships in spring 2016. The GT delivers 456 hp and 443 lb-ft of torque.
Mercedes-Benz said more information on pricing and equipment levels for both models will be available closer to their respective launch dates.
Edmunds says: The Mercedes-AMG GT S undercuts the Porsche 911 Turbo by $20,000, something that should catch the eye of sports car buyers who want serious performance and value.