Incredible efficiency and range - the Mercedes-Benz VISION EQXX concept teases the future

The Mercedes-Benz VISION EQXX sets off on its record-breaking trip. Images: Mercedes-Benz

The Mercedes-Benz VISION EQXX is not a production car, nor a showy concept vehicle but rather an engineering test bed for future Mercedes-Benz Group technologies. This week, the EQXX travelled from Sindelfingen across the Swiss Alps and Northern Italy, to Cassis on the Côte d'Azur in France - a journey of more than 1,000 kilometres (620 miles). The long-distance drive was completed with the charging socket sealed and accompanied by an independent expert from certification body TÜV Süd.

Averaging a record 8.7 kWh/100km energy consumption figure, the EQXX’s battery still held a 15% state of charge (around 140km) upon arrival. So how was this achieved?

The answer is of course, not due to one single factor, rather an incredible soup of advanced design and engineering. The EQXX’s slightly odd, rounded form provides an aerodynamic drag coefficient of Cd 0.17, lower than the slippery EQS which has a score of 0.20. Mercedes-Benz says that air “flows elegantly like a water droplet towards the rear".

According to Ola Källenius, Chairman of the Board of Management of Mercedes-Benz Group AG, “The VISION EQXX is the most efficient Mercedes ever built. The technology programme behind it marks a milestone in the development of electric vehicles. It underpins our strategic aim to ‘Lead in Electric’,”

Low rolling resistance tyres were specially developed for the EQXX in conjunction with Bridgestone. At 185/65 R 20 97 T, the wide diameter and narrow width provide a 20 percent weight reduction, improved aerodynamic geometry, and in conjunction with lightweight magnesium wheels, greater driving range.

Bionic engineering is Mercedes’ fancy term for making stuff lighter. Tesla has pushed the automotive industry forward with its lightweight, single-piece castings, but Mercedes-Benz has gone further with its bionic-looking structural components. The skeletal aluminium chassis components have holes where structural rigidity is not necessary, providing a 20 percent weight reduction.

A 100 kWh battery — the same capacity as the Mercedes-Benz EQS — sits within the floor of the EQXX, however it weighs just 495kg, some 30 percent less than the EQS. With 50 percent less volume than its sedan sibling, the EQXX battery measures just 200 x 126 x 11 cm. The total weight of the vehicle is 1,755 kilograms.

While we won’t see the EQXX’s technology in production vehicles anytime soon, Mercedes-Benz has always been a leader in automotive engineering, safety and drivetrain development. The S-Class limousine debuted many features now taken for granted on the cheapest of econoboxes today, from the Anti-lock Braking System (ABS), airbags, and adaptive cruise control. We can be certain that innovations debuted within the EQXX will begin to filter through to Mercedes’ production battery electric vehicles this decade.

Source: Mercedes-Benz