Stepping up to the higher-performance 2017 Mercedes-AMG GT S will set buyers back at least $132,125 including destination fee, while the pricing for the new track-oriented 2018 GT R variant, arriving in mid-2017, has not yet been announced.
Both the GT and GT S are powered by a 4.0-liter twin-turbo V8 that comes mated to a seven-speed, dual-clutch rear transaxle with limited-slip differential. In the GT, the engine produces 456 horsepower and 443 pound-feet of torque, while in the GT S it puts out 503 hp and 479 lb-ft of torque.
Performance suspension, wheels, tires and exhaust system are standard.
Mercedes says to expect 0-60-mph times of 3.9 seconds for the GT and 3.7 seconds for the GT S, with top speeds of 189 mph and 193 mph, respectively.
Inside, both models feature AMG performance seats with power memory, black piano lacquer trim, and a premium surround-sound system, as well as keyless start, rearview camera and the Mercedes-Benz COMAND navigation and infotainment system with touchpad.
The new top-of-the-line 2018 Mercedes-AMG GT R takes performance into supercar territory, with the 4.0-liter V8 kicked up to 588 hp and 516 lb-ft of torque, 0-60 mph times in the 3.5-second range and a top speed of 198 mph.
The extensive use of aluminum and carbon fiber makes the GT R track monster the lightest of the three models, while adjustable AMG coil-over suspension, active rear-wheel steering, adjustable traction control, an electronically controlled limited-slip differential and active aerodynamics make sure the power gets to the road efficiently.
Forged aluminum wheels shod with Michelin Pilot Sport Cup 2 tires will be found at all four corners, along with ventilated and perforated brake discs, 15.4-inch in front and 14.2-inch in back, complemented by high-performance yellow calipers. A ceramic composite brake system is optional.
The sporty interior of the GT R features AMG performance seats covered in leather and microfiber, black piano lacquer trim, gauges with yellow highlights and controls for the three AMG Dynamic Select drive modes: Comfort, Sport and Sport Plus.
Edmunds says: With three levels of performance to choose from, the Mercedes-AMG GT lineup should satisfy a wide range of sports-car enthusiasts.