This is the all new five-door Mercedes replacement for the CLS 63 and a rival to the all new Porsche Panamera. The production version is due to make its world debut at the Geneva motor show next March, with sales in international markets are scheduled to begin in September, 2018. The final production version of this Mercedes-AMG GT Concept will be sold with a range of EQ Power-branded petrol-electric hybrid drivelines featuring differing battery capacities, outputs and electric ranges.
The car will be launched with the same 612hp, twin-turbo, 4.0-litre, petrol V8, 9-speed automatic gearbox and fully variable 4-wheel drive system as the latest E63 S 4Matic, upon which it is largely based.
The decision to develop the car’s new hybrid driveline with three differing battery capacities will allow Mercedes-AMG to offer the car with varying power outputs and ranges.
The range-topping hybrid model is set to produce the same 816hp and offer a similar 50km electric range as the GT Concept.
The other versions under development are said to include a base hybrid driveline with 680hp and a 30km range and a mid-range variant with 748hp and a 40km range.
The hybrid driveline for the production version of the GT Concept uses AMG’s twin-turbocharged 4.0-litre V8 engine, mounted longitudinally up front, in combination with an electric motor sited within the rear axle. The engine can send power to all four wheels, while the motor delivers power exclusively to the rear wheels. 
