The new Mercedes-AMG EQS 53 4MATIC+ with all-electric drive system

With the new EQS 53 4MATIC+ Mercedes-AMG is embarking on the all-electric future of Driving Performance. The first battery-electric AMG production model is based on the Mercedes EQ architecture for luxury and executive-class vehicles. It thus fits seamlessly into the Group-wide electric strategy.

The luxury saloon with an output of up to 560 kW has been newly developed or refined in Affalterbach in all performance-related areas. It impresses with brand-specific features wherever the customer can experience them directly: from the technology to the exterior/interior design and the emotive vehicle sound.

At the heart of the new Mercedes-AMG EQS 53 4MATIC+ is its performance-oriented drive concept with two motors. The powerful electric powertrain with one motor each at the front and rear axles has fully-variable AMG Performance 4MATIC+ all-wheel drive, which optimally transmits the drive power to the asphalt in all driving conditions. The basic version achieves a maximum total output of 484 kW (658 hp), with a maximum motor torque of 950 Nm. With the AMG DYNAMIC PLUS package, which is available as an option, the maximum output increases to up to 560 kW (761 hp) in RACE START mode with boost function. The maximum motor torque is then up to 1020 Nm.

In this case the new Mercedes-AMG EQS 53 4MATIC+ accelerates from 0-100 km/h in 3.4 seconds with a battery charge level of at least 80 percent. The top speed is limited to 250 km/h with the optional package. In the basic version the AMG EQS accelerates from 0-100 km/h in 3.8 seconds (minimum 80% battery charge). Its maximum speed is limited to 220 km/h.

AMG-specific electric motors for perfectly balanced Driving Performance

The AMG-specific electric motors at the front and rear axles are permanently excited synchronous motors (PSM). The decided emphasis on performance is already evident in the output and torque values. In addition, the Mercedes-AMG electric motors are characterised by an optimum balance of enhanced power, efficiency and noise comfort. Among other things, this is ensured by new windings, stronger currents and new actuation via inverters with specially developed software. This allows higher rotational speeds and thus more power, setting standards especially in acceleration and top speed.

The electric motor at the rear axle of the EQS 53 4MATIC+ is particularly powerful. A major reason for this is the six-phase design based on two windings with three phases each. The stators with move-in winding ensure a particularly powerful magnetic field.

Added to this is the highly resilient thermal concept, which allows repeated acceleration manoeuvres with consistently high performance. The centrepiece of the sophisticated design is the so-called water lance in the shaft of the rotor, which cools it. Other AMG-specific cooling elements in the cooling circuit are special ribs on the stator and the needle-shaped pin-fin structure on the inverter, which is made of high-performance ceramics. In addition, there is the additional transmission oil cooler which also increases efficiency during cold driving, as it warms the transmission oil as needed.

Intelligent recuperation for efficient energy recovery

The new Mercedes-AMG EQS 53 4MATIC+ sets standards not only with its highly dynamic power delivery when accelerating, but also with efficient energy recuperation when braking. The recuperation output is up to 300 kW^[1].

The driver can adjust the level of recuperation in three stages via switches on the steering wheel, and receive situation-related support from the ECO Assistant. Combined braking can take place until standstill. With the help of the optional DRIVE PILOT, deceleration is automatic in response to detected vehicles ahead until they come to a standstill, for example at traffic lights.

New battery generation with a capacity of 107.8 kWh

The new Mercedes-AMG EQS 53 4MATIC+ is equipped with a powerful 400-volt battery manufactured using the latest lithium-ion technology. A major advance in sustainability has been achieved in the cell chemistry: the cobalt content is reduced to ten percent, the optimised active material consists of nickel, cobalt and manganese in a ratio of 8:1:1.

The high-voltage battery has a usable energy content of 107.8 kWh. One special technical feature is the AMG‑specific wiring, which is adapted to the high performance capacity. The battery management system is also configured specifically for AMG. In the Sport and Sport+ driving modes the focus is on performance, in Comfort mode on operating range. The new generation of batteries is characterised by a significantly higher energy density compared to previous developments. It also has a higher charging capacity. Another new feature is the possibility to install updates for the battery management system over the air.

Shorter charging times thanks to intelligent thermal management

Another advantage of the new battery generation is the significantly shorter charging times. As with the sister model from Mercedes-EQ, the battery can be charged with up to 200 kW at quick-charging stations with direct current. In this case, power for up to another 300 kilometres (WLTP) can be “topped up” after just 19 minutes^[2]. Thanks to the onboard charger, the electrified AMG can be conveniently charged at home or at public charging stations with up to 22 kW of alternating current. In Japan, bidirectional charging will also be possible, i.e. charging in both directions. In addition, there are intelligent charging programs that can be activated automatically depending on the location. Functions such as battery-friendly charging make charging even more efficient.

The efficient thermal management also plays a part in shortening charging times. If the intelligent navigation with Electric Intelligence is activated, the battery is preheated or cooled as needed while driving, so as to reach the optimum temperature for fast charging at the charging point. The desired temperature range of the battery is achieved with the aid of the cooling circuit and a PTC (Positive Temperature Coefficient) booster heater integrated into it.

The battery design aims to ensure the optimum battery operating temperature under all operating conditions. The aluminium extrusions of the battery frame have defined cavities through which the coolant flows. All in all, the intelligent temperature and charging management ensures that high charging currents can be maintained for a long time.

The battery also stands out for its durability. The ECO Charging function makes a significant contribution to this: the intelligent control reduces the battery load during charging, and thus slows down the natural ageing process of the battery. Customers can also benefit from “charge interruption” function: the charging process can be paused at freely selectable times so as to use cheaper off-peak electricity at a later time, for example. The battery certificate stands for the long service life of the high-voltage batteries. It is valid up to a term of ten years or up to 250,000 kilometres.

Fully variable AMG Performance 4MATIC+ all-wheel drive

The power of the battery-powered motors is brought to the road by the standard AMG Performance 4MATIC+ fully variable all-wheel drive system. The system continuously distributes the drive torques between the front and rear axles, depending on the driving situation: compared to a mechanical all-wheel drive system, the electro-specific system ensures a significantly faster response. The torque is checked 10,000 times per minute and adjusted if necessary. The torque distribution depends on the selected driving mode: in “Comfort” mode the focus is on maximum efficiency, while in “Sport” and “Sport+” the torque is more rear-biased in the interests of greater lateral dynamics.

Key technical data