2027 Mercedes-Benz AMG GT 4-Door

The Mercedes-AMG GT 4-Door Coupé redefines performance: With extreme power, enormous continuous performance, highly precise driving dynamics, and a thrilling AMG intensive driving experience, the four-door sports car catapults performance and driving pleasure to a new level. The 4-Door Coupé is based on the high-performance AMG.EA architecture and consequently underlines Affalterbach's pioneering spirit with numerous world firsts. Central to this is a newly developed drive concept, strictly designed for high performance, which is being used for the first time in a series-production EV. It utilises a new, highly innovative electric motor technology, so-called axial flux motors, combined with a high-performance battery. The result is a drive unit that not only impressively delivers peak power but can also call upon it repeatedly and continuously, thereby shifting the benchmark in the high-performance segment. Mercedes-AMG demonstrated the capability of this technology last year with the spectacular record drive of the CONCEPT AMG GT XX in Nardò. The technology demonstrator sprinted over 40,000 kilometres in seven days and 13 hours - literally driving "around the world in eight days" - and pulverised a total of 25 long-distance records in the process.

Customers will be able to choose between two powerful powertrains at the start of ordering in the coming days: the Mercedes-AMG GT 63 4-Door Coupé and the Mercedes-AMG GT 55 4-Door Coupé.

Outstanding performance and continuous power thanks to a revolutionary drive concept

Mercedes-AMG continues its impressive tradition of high-performance drivetrains and is ushering in a new level of performance in the Mercedes-AMG GT 4-Door Coupé. At its core are revolutionary axial flux motors that work hand in hand with a completely new battery technology. Both models are equipped with three axial flux motors and deliver an output ranging from 600 kW to 860 kW (816 hp to 1,169 hp). The newly developed battery concept uses directly cooled cylindrical cells with a special cell chemistry that ensures uniform temperature distribution and high-performance stability under continuous load.

Impressive power: Up to 860 kW peak output

The basic principle of the axial flux motor was developed by the British electric-motor specialist YASA, which has been a wholly owned subsidiary of Mercedes-Benz AG since July 2021. The compact motor design allows greater flexibility in packaging the drivetrain. Compared with conventional electric motors, this innovative drive delivers higher continuous power and higher torque. This also allows demanding driving performances to be reproduced very frequently in succession.

How it works: In an axial flux motor, the electromagnetic flux runs parallel to the motor's axis of rotation. In a conventional electric motor, it runs perpendicular to the axis. Key components of the axial flux motor are designed as thin discs: two rotors enclose the stator like a sandwich on the left and right. This arrangement - also known as an H-configuration - allows optimal coupling of the magnetic flux generated by the stator to the rotors. In the new Mercedes-AMG GT 4-Door Coupé, this combination at the front axle is just about nine centimetres wide; the two motors at the rear axle each measure only around eight centimetres in width. All three of these innovative electric motors together deliver exceptional overall performance in the new Mercedes-AMG GT 4-Door Coupé: In the GT 63 4-Door Coupé 4MATIC+, peak output (Peak Performance during AMG Launch Control at 80 % SoC) reaches 860 kW (1,169 hp). The Mercedes-AMG GT 55 4-Door Coupé 4MATIC+ delivers 600 kW (816 hp). The High Performance Electric Architecture is technologically designed for even higher outputs of over 1,000 kW.

The motors are integrated into a High-Performance Electric Drive Unit (HP.EDU) on each axle. At the rear axle, the HP.EDU contains two axial flux motors, which are combined together with a compact single-stage planetary gearbox in a shared housing. The motors and gearboxes are oil cooled. The required Pump Control Unit, including hydraulic pumps and suction filters, is also integrated into the HP.EDU to save space. In addition, two water-cooled silicon-carbide (SiC) inverters (one per motor) are used. The material properties of silicon carbide offer numerous benefits for demanding applications that require high voltages, high currents, high temperatures, and excellent thermal conductivity. The axial flux motors reach more than 13,000 rpm at top speed.

The front HP.EDU contains one axial flux motor, a spur-gear transmission with integrated parking lock, a liquid-cooled silicon-carbide (SiC) inverter, and a Pump Control Unit. The axial flux motor reaches more than 15,000 rpm at top speed. The front electric drive acts as a "booster motor", activated only when additional power or traction is required on the front axle. For increased efficiency under low load, the so-called Disconnect Unit (DCU) decouples the front-axle electric motor within milliseconds, reducing unnecessary drag losses. During acceleration and recuperation, the DCU closes for optimal performance. During steady state driving, low load, or coasting, it reopens to reduce drag losses and increase efficiency.

Inspired by Formula 1, developed in Affalterbach: The AMG high performance electric battery

The high-voltage battery of the new Mercedes-AMG GT 4-Door Coupé is a completely new development and the result of concentrated expertise. It combines experience from the Mercedes-AMG ONE hypercar, the uncompromising performance philosophy of Formula 1®, and the deep know-how of Mercedes-AMG's top engineers in Affalterbach, together with Mercedes-AMG High Performance Powertrains (HPP) in Brixworth, England. This "AMG High Performance Electric Battery" (AMG HP.EB) is the key to the vehicle's outstanding overall performance. It enables not only high output, but also performance that can be called upon repeatedly, combined with impressively fast energy absorption and a high-power density. The battery concept is designed to potentially enable WLTP ranges of well over 700 kilometres in the future.

Three key aspects contribute significantly to this outstanding performance capability: newly developed battery cells, an innovative direct cooling system for each individual cell, and a comparatively high voltage.

Newly developed battery cell for the highest performance requirements

The high-voltage battery in the new Mercedes-AMG GT 4-Door Coupé is the result of a groundbreaking new development designed specifically for maximum performance. At the heart of this innovation is a battery cell with a distinctive shape: cylindrical, tall and slim. The cells are 105 millimetres high and measure 26 millimetres in diameter. This unique format provides crucial advantages for cooling. 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 innovations in the high-voltage battery of the new Mercedes-AMG GT 4-Door Coupé go even further: the laser-welded aluminium cell housing is also a new development. It is not only significantly lighter than conventional "steel cans" but also offers outstanding electrical and thermal conductivity. These properties enable more precise and effective cell temperature control, allowing the cell to cool down or warm up more quickly as needed. Another highlight is the full-tab design of the cells. Here, the cell windings are connected electrically and thermally across the entire surface of the poles. The result is a significant reduction in internal resistance, enabling extremely high charging and discharging performance. In addition, these full-tab battery cells are extremely robust and remain reliable even under extreme loads.

In the new Mercedes-AMG GT 4-Door Coupé, a specially developed cell chemistry is used. It is based on NCMA (Nickel/Cobalt/Manganese/Aluminium) in the cathode and a silicon-containing anode. It also offers a previously unique combination of high energy density - over 298 Wh/kg or 732 Wh/l at cell level - together with strong charging performance and long service life.

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.

Intelligent direct cooling for the battery cells

In total, 2,660 cells are used in the Mercedes-AMG GT 4-Door Coupé. The individual cylindrical cells are grouped into 18 laser-welded plastic modules. Here too, the focus is entirely on performance, because the direct cooling of the cylindrical cells is integrated into the plastic modules to ensure optimum heat dissipation. A high-tech coolant based on an electrically non-conductive oil flows around each individual cylindrical cell, keeping it at the ideal temperature. The coolant passes through cooling channels in the modules, which are designed to provide uniform cooling for all cells. A special line system ensures that all cells are evenly supplied with the cooling oil.

The high voltage of the 800-volt lithium-ion energy storage system also contributes to overall performance. Advantages of the high voltage include lower weight due to lighter wiring, higher continuous power, and shorter battery charging times. Charging losses through the charging cable are also significantly reduced.

Temperature control for short charging times and long durability

In the HP.EB, the temperature management is intelligently adapted to different driving situations. Heating the battery to its optimal temperature window happens quickly and precisely. Maximum power is available across a wide temperature range.

The operating strategy is programmed so that maximum performance can be drawn from the battery, after which the direct cooling system reduces the temperature again. The intelligent thermal management controls the coolant temperature for each cell module exactly to the required value ("on-demand cooling"). As a result: even during spirited driving - with frequent acceleration (battery discharge) and deceleration (battery charging through recuperation) - the energy storage system maintains its high-performance capability. Effective direct cooling enables the battery, in combination with the cell design, to achieve its high continuous power density.

Charging almost as fast as refuelling with 600 kW charging power

The charging performance also sets new standards. The new Mercedes-AMG GT 4-Door Coupé achieves a charging current of more than 800 amperes and thus a peak charging capacity of more than 600 kW at the appropriate infrastructure - such as Alpitronic's new fast charger. This means that in just ten minutes, enough energy for around 460 kilometres of driving range1 can be recharged. Charging from 10 to 80 % State of Charge (SoC) takes only 11 minutes.3

This means the four-door sports car is already equipped for the infrastructure of the future, as conventional fast-charging stations often offer lower charging speeds. However, even there, the Mercedes-AMG GT 4-Door Coupé can play to its strengths and draw full charging power over large parts of the charging process.

Direct cooling of the battery cells also supports fast charging. In addition, there is optimised thermal management of the cells and lines during charging.

The peak charging power depends on the available charging current/the power of the charging infrastructure, the battery temperature, and the state of charge at the start of the charging process. With the help of the intelligent vehicle software, charging stops can be optimally integrated into route planning, and the battery can be pre-conditioned for the fastest possible charging process.

If a driver can take a longer charging break or is travelling in an area with weaker infrastructure, the battery can also be charged using only 400 volts. The system can switch from 800 to 400 volts. Furthermore, the new Mercedes-AMG GT 4-Door Coupé is prepared for five fast-charging standards worldwide: CCS2 in Europe, GB/T in China, CHAdeMO in Japan, CCS1 in South Korea and NACS in the USA.

Body-in-white plus battery housing: Safety as the top priority

The body-in-white of the new Mercedes-AMG GT 4-Door Coupé is a completely new development. The intelligent material mix of aluminium, steel and fibre-reinforced composites combines the typically high AMG rigidity with low weight. Optimised material cross-sections and component geometries create space for the demanding technology and the complex chassis.

The high-voltage battery is integrated centrally into the structure of the e-skateboard. Its protective housing (safety box) encloses the cell modules, all switching components and the battery management system (BMS), also an exclusive AMG in-house development. Defined transverse load paths combine high torsional rigidity with low weight and form the basis for high crash safety.

The battery housing is part of the vehicle structure and integrated into the crash concept. The battery, high-voltage (HV) cables and additional HV components are designed and protected to meet the high Mercedes-Benz safety requirements. In addition to legal regulations, strict internal Mercedes-Benz safety standards must also be met.

This means the battery can actively absorb and dissipate forces. It is therefore a key component of the vehicle's overall structure and safety. The high-voltage section with busbars is arranged as an "upper floor" along the "spine" of the battery, similar to a centre or transmission tunnel. This high level of integration into a single component ensures very efficient use of space.

Under the tunnel lies a highly advanced cooling system whose core is an innovative cooling module. This module serves as the central interface to the vehicle's cooling system and integrates key components such as the coolant pump module (KMP), the oil-water heat exchanger (ÖWWT), and the necessary connectors for direct oil cooling. Both the KMP and the ÖWWT were specially tailored to the vehicle's requirements and the coolant used and are perfectly coordinated with each other. The precise interaction between the KMP, the large ÖWWT and the direct cooling system enables - together with the high-performance vehicle cooling system - an exceptionally high cooling capacity of at least 20 kW, a significant improvement over the 5-8 kW of conventional battery systems. Outside the cooling module, only two further components are required: coolant lines precisely matched to the modules to ensure maximum temperature uniformity across the entire battery, and an expansion tank.

The temperature of the battery management system (BMS) is actively regulated via a special cooling plate, enabling higher currents. For the first time, virtual sensors are also used: the BMS determines temperatures - such as within a cell - not via physical components but through mathematical models based on the current charging power.

Innovative high-performance cooling with Central Coolant Hub (CCH)

The new Mercedes-AMG GT 4-Door Coupé features an innovative and high-performance cooling system. The precise supply of all components is handled by the so-called Central Coolant Hub (CCH), another innovation from Affalterbach and a direct technology transfer from the record-breaking CONCEPT AMG GT XX.

This highly integrated component combines numerous elements - such as pumps, sensors, and valves - within one compact housing. The CCH is designed for a variety of scenarios. Among other things, it can ensure maximum cooling of all systems during high ambient temperatures and full-load driving. Targeted and efficient cooling of individual components is also possible. For example, if the battery is within its optimal operating window and does not require cooling, the CCH can direct cooling power specifically toward the EDUs and the Onebox. A single large cooling circuit with intelligent valves, supported by a chiller and both main and auxiliary radiators, optimises thermal efficiency and enables immediate full charging and motor power.

AMGFORCE S+: V8 character at the touch of a button

With meticulous attention to detail, the development team has created a bespoke, vehicle-specific driving experience for V8 enthusiasts for the new Mercedes-AMG GT 4-Door Coupé. The AMGFORCE S+ drive programme delivers an unparalleled and immersive V8 experience with authentic shifts, and an adapted driver display in the central-tube design. The sound portfolio, which is patent-pending, blends the legendary AMG V8 acoustics with innovative electric technology.

The sound from the GT R serves as the basis for a multi-sensory overall experience, tailored to the respective driving situation. The experience is dynamically context-dependent and adapted in real-time to the current driving style. For acceleration processes, gear changes, or burbling - the entire sonic spectrum of a modern performance vehicle is made accessible. The result is unmistakable and typically AMG.

The technology is the result of uncompromising engineering: An intelligent real-time mixing system uses more than 1,600 sound files to sonically interpret each driving situation. Every sample element is broken down into granular loops, while the mix is generated dynamically in real time to match the current driving behaviour. Whether during acceleration, shifting events, or burbling, the entire acoustic spectrum of a modern performance vehicle becomes accessible. The result is unmistakable: bold, unique, thrilling - just as AMG is meant to be.