The flagship of the Mercedes-Benz range – the S-Class – finally goes fully electric as the third member of the EQ family of 100% electric vehicles. With the EQE business saloon and the SUV variants of the EQS and EQE, further models based on the new architecture will follow.
The EQS will allow customers in the luxury segment to benefit fully from all the advantages of an all-electric architecture with respect to space and design. This new generation of electric vehicles in the luxury and executive segment is based on a custom-developed architecture, which is scalable in every aspect and can be used across model series. The wheelbase and track as well as all other system components, especially the batteries, are variable thanks to the modular design.
770-km range
The vehicle concept is thus optimised to meet every requirement of a future-oriented, battery-electric model family. A range of up to 770 kms is claimed and applying every trick in the book to bring wind resistance down, the EQS sets a new world record in aerodynamics for production cars with a value of 0.202 Cd.
The electric powertrain, which has an output of up to 385 kW (a variant with a higher output is also mentioned), is positioned at the rear axle, while the versions with 4MATIC also have a second powertrain at the front axle. Maximum torque will be 568 Nm in the EQS 450+, and 855 Nm in the EQS 580 4MATIC, and a maximum speed of 210 km/h will be programmed as the limit.
High energy content in battery packs
The EQS marks the launch of a new generation of batteries with significantly higher energy density. The larger of the two lithium-ion batteries has a usable energy content of up to 107.8 kWh. That is around 26% more than the EQC. A major advance in sustainability has been achieved in the cell chemistry: the proportion of cobalt has been reduced to 10% while the optimised active material consists of nickel, cobalt and manganese in a ratio of 8:1:1.
The battery pack can also be preheated or cooled while driving to be at the optimum temperature temperature window at a fast-charging station, which enables faster charging at 200 kW. At home or at public charging stations, the EQS can also be charged with up to 22 kW with AC using the on-board charger. A 15-minute charge is said to be good providing a range of up to 300 kms.
The EQS will also allow bidirectional charging in Japan, ie charging in both directions. In addition, there are various intelligent charging programs that can be activated automatically depending on the location, and functions such as particularly battery-saving charging.
10-year ‘Performance Promise’
Mercedes-Benz is ensuring that the original battery packs are of a very high quality, with extensive testing before installation. A ‘Performance Promise’ is made through battery certificate for customers which covers loss of capacity of the battery pack. It will be valid for 10 years or up to 250,000 kms.
Navigation with Electric Intelligence means what it says. When a destination is chosen, the system plans the fastest and most convenient route, including charging stops, based on numerous factors and reacts dynamically to traffic jams or a change in driving style. Of course, this will be market-dependent as real-time traffic information and weather reports will be necessary to compute the route.
The new EQS model will be launched in Europe in August this year.
