Mercedes-AMG has unveiled the all-electric GT 4-Door Coupé with up to 860 kW of output and a peak charging capacity of more than 600 kW. Orders for the high-performance model will open in the coming days, initially with the GT 63 and GT 55 powertrain variants.Image: Mercedes-BenzThe all-electric GT 4-Door Coupé is the first model built on the Mercedes-AMG vehicle platform AMG.EA and is powered by three axial flux motors, which combine to deliver up to 860 kW of peak power. Mercedes emphasises that the model embodies ‘Affalterbach’s pioneering spirit with numerous world firsts.’ That is the name of the town near Stuttgart in southern Germany, where Mercedes-AMG GmbH is based.The four-door GT Coupé introduces several innovations. Mercedes-AMG is using axial flux motors in a production model for the first time and combines them with an 800-volt battery derived from Formula 1 technology. Its directly cooled cylindrical cells are designed to deliver fast, repeatable and sustained power output – a core element of the AMG brand promise.Two powertrain versions will be available when orders open in a few days: the 63 and 55 versions. “The pricing for the models will be based on comparable predecessor vehicles,” Mercedes-AMG states. These are currently priced at around €179,000 and €158,800, respectively. Notably, Mercedes has not mentioned the 43 version – the internal combustion entry-level model of the GT 4-Door Coupé – for the launch of the new electric generation. It remains unclear whether it will be introduced later.Technically, the new powerhouse centres on a drivetrain concept developed purely for performance. The vehicle is expected to accelerate from 0 to 100 km/h in just 2.1 seconds, and from 0 to 200 km/h in 6.4 seconds. Mercedes-AMG states a top speed of 300 km/h (with the so-called ‘Driver’s Package’). However, it should be noted that these and all following figures are still preliminary.The three innovative electric motors of the GT 4-Door Coupé deliver a peak power output of 860 kW in the 63 version. The 55 version offers slightly less, at 600 kW. According to Mercedes-AMG, this is not the limit: the architecture is technologically capable of supporting even higher outputs of over 1,000 kW, the manufacturer states. Notably, the axial flux motors rotate at over 13,000 rpm at top speed.The motors are integrated into a High Performance Electric Drive Unit (HP.EDU) at each axle. At the rear axle, this unit houses two axial flux motors, each combined with a compact input planetary gearbox in a single housing. Importantly, the motors and gearboxes are oil-cooled. The required Pump Control Unit, complete with hydraulic pumps and suction filters, is also space-efficiently integrated into the HP.EDU. Additionally, two water-cooled silicon carbide inverters – one per motor – are included.Front motor reaches up to 15,000 rpmThe front HP.EDU contains one motor, a spur gearbox with an integrated parking lock, as well as a Pump Control Unit and a liquid-cooled SiC inverter. “The axial flux motor reaches more than 15,000 rpm at top speed,” AMG emphasises.The front electric drive acts as a ‘booster motor,’ engaging only when additional power or traction is required via the front axle. To improve efficiency under low load, the front axle electric motor can be rapidly decoupled, reducing unnecessary drag losses. The connection is re-established just as quickly during acceleration and recuperation.Regarding the completely newly developed battery of the GT 4-Door Coupé: the AMG High Performance Electric Battery (AMG HP.EB) is the result of close collaboration between the engineers at Mercedes-AMG in Affalterbach and Mercedes-AMG High Performance Powertrains (HPP) in Brixworth, England. The battery incorporates experience from Formula 1 and the development of the Mercedes-AMG ONE hypercar. It is designed to deliver the performance typical of AMG while also providing a range appropriate for its price class.“The battery concept is designed to potentially enable WLTP ranges of well over 700 kilometres in the future,” AMG states. Currently, the manufacturer specifies a range of 600 to 700 kilometres.Cylindrical cells with custom-developed NCMA chemistryKey innovations of the battery include newly developed battery cells, an innovative direct cooling system for each individual cell, and a comparatively high voltage. The cell is cylindrical, tall, and narrow: it measures 10.5 centimetres in height and 2.6 centimetres in diameter.“This unique format provides crucial advantages for cooling,” Mercedes-AMG explains. “The small diameter of the round cell minimises the distance from the cell core to the surface. This enables rapid and efficient dissipation of heat generated under load, ensuring that each individual round cell is always maintained within its optimal temperature range. This is essential for consistent power delivery and battery longevity, even under extreme conditions.”The laser-welded aluminium cell housing is also a new development. It is not only lighter than conventional steel casings but also offers improved electrical and thermal conductivity. This, too, contributes to more precise and effective temperature control of the cell, according to Mercedes-AMG. Another detail is the full-tab design of the cells, where the cell winding is fully connected electrically and thermally to the poles, a method already familiar from other production models. “The result is a significant reduction in internal resistance,” the carmaker notes.Importantly, the cathodes of the cells feature a custom-developed NCMA chemistry (Nickel/Cobalt/Manganese/Aluminium) as the active material. Its counterpart is a silicon-containing anode. AMG specifies the energy density as over 298 Wh/kg and 732 Wh/l at the cell level. The developers conclude: “Overall, the combination of the tall and slim format, aluminium housing, full-tab technology, and NCMA chemistry provides the foundation for maximum performance, particularly in terms of continuous power capability, in each individual battery cell.” Furthermore, “the high voltage of the 800-volt lithium-ion energy storage system also contributes to overall performance.”Responsive thermal managementIn total, the Mercedes-AMG GT 4-Door Coupé features 2,660 cells, grouped into 18 laser-welded plastic modules. The battery housing itself is part of the vehicle structure. The plastic modules integrate the oil-based direct cooling system for the cylindrical cells, with AMG highlighting a special coolant and responsive thermal management: “The intelligent thermal management controls the coolant temperature for each cell module exactly to the required value.” This approach is referred to as on-demand cooling.All these innovations are reflected in the charging performance of the high-performance vehicle: the model can achieve a charging current of over 800 ampères at suitable charging stations (such as the new fast charger from Alpitronic), resulting in a peak charging power of over 600 kW.According to Mercedes-AMG, the GT Coupé can recharge enough energy for around 460 kilometres in just ten minutes. The charging time from 10 to 80 % state of charge (SoC) is quoted as just eleven minutes. Alternatively, the battery can be charged gently at 400 volts during longer stops. Also important for global distribution: the Mercedes-AMG GT 4-Door Coupé supports five fast-charging standards: CCS2 in Europe, GB/T in China, CHAdeMO in Japan, CCS1 in South Korea, and NACS in the USA.Here is an overview of the model’s additional highlights:The body-in-white is a completely new design made from aluminium, steel, and fibre composites, ensuring high rigidity and low weight.The chassis offers a wide range between sportiness and comfort and is designed to significantly reduce body roll. It also features a standard rear-axle steering system with a 6-degree steering angle.Dynamics can be tailored to individual driving behaviour using the AMG RACE ENGINEER function. Thanks to intelligently linked hardware and software, response, traction, and cornering behaviour can be precisely controlled.To optimise power delivery to the road, the aerodynamics of the four-door sports car adapt actively to every driving situation. This is enabled by intelligent, adaptive aerodynamic technology, utilising two Venturi plates in the underbody and a rear diffuser.In AMGFORCE S+ mode, the vehicle delivers an authentic V8 sound, combined with a simulated interruption in traction during gear shifts.The GT 4-Door Coupé was first publicly showcased last November on the sidelines of the Formula 1 race in Las Vegas. At the time, a heavily camouflaged prototype was presented, and actor Brad Pitt was announced as the face of the model. In March, Mercedes-Benz revealed the interior of the GT 4-Door Coupé, followed by the release of key drivetrain details after the completion of winter testing.Inspired by the Concept AMG GT XXMercedes-AMG had already tested the cornerstones of the new technologies for the all-electric performance four-door with the Concept AMG GT XX test vehicle in 2025. During this process, the concept car set several records and covered a distance of 40,075 kilometres in just eight days. The optimal sustained speed during this endeavour was 300 km/h – placing corresponding demands on the technology. In addition to the GT 4-Door Coupé, an all-electric SUV based on the AMG.EA platform is also set to follow, with testing already underway since late 2024.Ola Källenius, CEO of Mercedes-Benz Group AG, now speaks of an impressive debut: “I’ve driven the new AMG GT 4-Door Coupé myself many times – and it genuinely stands out. It pushes performance to new limits and delivers the emotion our fans expect – now in the electric era. From my time at AMG, I know how high the bar is set in Affalterbach. With this first model on the new AMG.EA architecture, we don’t just meet it, we move it.”All technical details released so far for the Mercedes-AMG GT 63 4-Door Coupé are summarised in the following table:Next, here is an overview of the technical data for the Mercedes-AMG GT 55 4-Door Coupé, which is expected to be priced around €20,000 lower than the 63 version.Mercedes-AMG GT 55 4-Door CoupéElectric motorsThree axial flux motorsMax. power output600 (816)Continuous power output375 (510)Max. drive torque1,800DriveAWDTop speed300 km/hAcceleration 0-100 km/h2.8 sec.Boost duration55Nominal voltage800 voltsBattery capacity (net)106 kWhDC charging power600 kWAC charging power11 kWCharging time DC (10-80 % SoC)11 minLength/Width/Height5,094/1,959/1,411 mmWheelbase3,040 mmDrag coefficient0.22Combined range (WLTP)597-700 kmUrban range (WLTP)667-770 kmmedia.mercedes-benz.com