The GT's exterior design was kept similar to that of the preceding SLS AMG. It features the wide wheelarches and lower bodywork of the SLS AMG with a fastback-like sloping roofline, but does not employ its gullwing doors, but it looks like a fastback with forward-opening doors. The large hood and slim windscreen have also stayed the same.
features a large center console and decorative elements in a leather and carbon polymer design. The trunk offers room for a medium-sized suitcase. The vehicle structure is made up of 93% aluminum, with the front module base made up of magnesium.
It features the same 4.0 L twin-turbocharged V8 engine (M178) used in the GT and GT S, but with power increased to 585 PS (430 kW; 577 bhp) and torque increased to 700 N·m (520 lb·ft). The GT R accelerates from 0 to 100 km/h (62 mph) in 3.6 seconds and has a claimed top speed of 198 mph (319 km/h).