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  Mercedes-AMG EQS 53 4MATIC+      

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Country of origin:Germany
Introduced in:2022
Introduced at:2021 IAA Mobility
Source:Company press release
Last updated:September 06, 2021
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Click here to download printer friendly versionWith 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.

"The AMG EQS 53 4MATIC+ is the first all-electric ambassador in the performance segment, made in Affalterbach. It is tailor-made for car enthusiasts who are looking for a combination of innovative electric mobility in a luxurious ambience, coupled with sportiness and agile driving dynamics. With our first all-electric AMG vehicle, we will undoubtedly appeal to and win over a new clientele for Mercedes-AMG. In addition, the EQS 53 is further proof that Mercedes-Benz is consistently driving electrification forward in all of its brands as well. Further all-electric AMG models will follow in the not too distant future, also on our AMG.EA platform developed entirely in-house," says Philipp Schiemer, Chairman of the Board of Management of Mercedes‑AMG GmbH.

"Also with electrification, we ensure that our models based on the EVA2 group platform will deliver on our AMG brand promise. Our customers can also look forward to a dynamic and emotional driving experience in this area. We ensure this with AMG-specific solutions, particularly when it comes to the drive system, suspension, brakes and, above all, sound," Jochen Hermann, Chief Technical Officer of Mercedes-AMG GmbH.

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.

Mercedes-AMG models have always stood for emotionality. The vehicle sound has always been an important part of the hallmark AMG driving experience. This will continue to be the case in the future. The EQS 53 4MATIC+ brings a new, powerfully sonorous sound to electric driving. Its sound system uses special loudspeakers, shakers and a sound generator to create a special sound experience in two versions: "Authentic" or "Performance". This exclusive AMG SOUND EXPERIENCE is generated inside and out with a tonality and intensity to match the current driving status, the selected driving mode or the driver's wishes.

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.

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.

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.

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.

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.

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.

Like the EQS from Mercedes-EQ, the suspension of the new Mercedes-AMG EQS 53 4MATIC+ features a four‑link axle at the front and a multi-link axle at the rear. AMG engineers have specifically improved the components and configured them to meet the special requirements of AMG customers. This applies to ride comfort as well as driving dynamics. The AMG RIDE CONTROL+ suspension is an air suspension system combined with adaptive, electronically controlled adjustable damping together with rear-axle steering as standard.

The suspension components that have an influence on the driving dynamics are new and AMG-specific. This applies to the rear axle beam, for example, which the engineers in Affalterbach have completely redeveloped. The subframe and motor mountings are also completely new developments, and exclusive to the AMG models. This also applies e.g. to the revised transverse stabilisers, as well as the wheel carriers and control arms, which are derived from other AMG Performance models.

As in the AMG GT 4-door Coupé, the standard air suspension of the EQS 53 4MATIC+ uses two pressure relief valves. These continuously variable control valves located outside the damper allow the damping force to be adjusted even more precisely to different driving conditions and driving modes: a valve controls the rebound damping, i.e. the force generated when the wheel rebounds. The other controls the compression damping when the wheel compresses. The rebound and compression stages are controlled independently of each other. This technology makes it possible to increase comfort on the one hand, but also to make the driving dynamics even sportier on the other hand.

The suspension control unit analyses data - including data from the acceleration and wheel path sensors - to adjust the damping force for each wheel in a few milliseconds to suit the situation. The AMG developers were able to significantly increase the spread between sportiness and comfort. Among other things, by widening the spread between minimum and maximum damping force characteristics, as well as even greater flexibility in characteristic mapping. By using the two adjustment valves, the damper is able to provide damping force adjustment across the full range of wheel vibrations. Thanks to the special design of the valves, the damper reacts quickly and sensitively to changing road surfaces and driving conditions.

The Mercedes-AMG EQS 53 4MATIC+ is equipped with rear-axle steering as standard. The steering angle of up to 9 degrees greatly enhances the agile handling of the large saloon. The turning circle is reduced to compact class level.

The interaction between front-axle and rear-axle steering is designed to achieve agile responses with little steering effort when driving in town or on country roads. At speeds below 60 km/h, the rear wheels steer in the opposite direction to the front wheels. This makes the AMG EQS highly manoeuvrable, light-footed and nimble. The effect is particularly positive when turning off, changing direction quickly and manoeuvring slowly.

From a speed of more than 60 km/h, the rear wheels steer in the same direction as the front wheels. The resulting virtually extended wheelbase offers increased handling stability and driving safety at high speeds, and during fast lane changes or sudden evasive manoeuvres.

The driving characteristics of the Mercedes-AMG EQS 53 4MATIC+ can be altered by the driver at the touch of a button, to suit the situation or personal preferences. This is made possible by the five AMG DYNAMIC SELECT driving modes "Slippery", "Comfort", "Sport", "Sport+" and "Individual". The driving modes cover a wide spectrum, from high comfort to pronounced sportiness. Important parameters such as drive and performance characteristics, suspension settings, steering, AMG Dynamics and AMG SOUND EXPERIENCE are modified to suit the selected driving mode. The maximum drive power can be called up in the Sport+ driving mode (or with kick-down).

The driver can also pre-select the basic suspension setup via the AMG DYNAMIC SELECT driving modes: at the touch of a button, the driving behaviour varies from maximum dynamics in "Sport+" mode to smooth gliding in the "Comfort" setting, for example. In addition, the tuning can be adjusted in three stages independently of the driving modes via a dedicated button.

Depending on the driving mode, the central drive control unit automatically activates different de-rating and cooling strategies: in "Sport" and "Sport+", the cooling system is activated sooner and the cooling capacity is increased to maintain delivered power for longer. The driver has the option of even more driving pleasure - for example on enclosed circuits - by using the ESP OFF function.

The Mercedes-AMG EQS 53 4MATIC+ is not only a top performer when it comes to driving dynamics, but also in handling safety. This is amply demonstrated by the AMG high-performance compound brake system with six-piston brake callipers and brake discs measuring 415x33 millimetres at the front, and single-piston brake callipers and brake discs measuring 378x22 millimetres at the rear. The optional AMG ceramic high-performance compound brake system uses even larger brake discs measuring 440x40 millimetres at the front. Another high-tech feature is the additional i-Booster function. This ensures that the braking system combines electric recuperation with the hydraulic brake in a highly efficient manner. For that really authentic driving experience, the i-Booster is specially tuned to the hallmark AMG pedal feel and the larger AMG braking system.

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  Article Image gallery (12) Specifications