Mercedes-Benz: VISION EQXX breaks own efficiency record on 1,202 km summer road trip from Stuttgart (Germany) to Silverstone (UK) on a single battery charge

The Mercedes-Benz VISION EQXX breaks its own efficiency record in real-world driving with an additional 1,000 km+ of travel on a single battery charge. After its record-breaking maiden drive from Stuttgart to Cassis (France) in April, the research vehicle raised the bar even higher, covering 1,202 kilometers from Stuttgart to Silverstone in the UK.

The Mercedes-Benz VISION EQXX breaks its own efficiency record in real-world driving with an additional 1,000 km+ of travel on a single battery charge. After its record-breaking maiden run from Stuttgart to Cassis (France) in April, the research vehicle raised the bar even higher, covering 1,202 kilometers from Stuttgart to Silverstone in the UK. After negotiating a motorway closure and demanding a diversion near Stuttgart, the VISION EQXX crossed the French border at Strasbourg and then drove at high speed through northern France to Calais, where it boarded the Eurotunnel. He continued his journey in the UK, taking the M25 around London and then stopping at the Mercedes-Benz Grand Prix in Brackley. Waiting to greet him were the Formula 1 and Formula E experts who helped develop the advanced powertrain. The VISION EQXX then drove on to Silverstone, where it was welcomed by special guest driver Nyck de Vries. The Dutchman, who races for the Mercedes-EQ Formula E team, chose not to take it easy with the research vehicle and drove to the maximum speed of 140 km/h on the iconic British circuit. He took full advantage of the opportunity and completed 11 laps, using the last charge in the pit lane. Throughout the road trip, the VISION EQXX took advantage of its innovative thermal management system to achieve an average consumption of 8.3 kWh/100 km in heavy traffic and summer temperatures.

The long-distance journeys of the VISION EQXX on public roads not only prove the effectiveness of the electric efficiency technologies from Mercedes-Benz in a wide range of real-life traffic scenarios, but also provide R&D experts with valuable data for the ongoing development programme.

“The journey continues – even further, even more efficiently! Once again, the VISION EQXX has proven that it can easily cover more than 1,000 km on a single battery charge, this time facing a very different set of real-world conditions. As Mercedes-Benz aims to go all-electric by 2030 where market conditions permit, it is important to show the world what can be achieved in real terms through a combination of advanced technology, teamwork and determination.” says Markus Schäfer, Member of the Executive Board of Mercedes-Benz Group AG, Chief Technology Officer responsible for Development and Purchasing.

Once is not enough – VISION EQXX proves real-world capabilities in a wide range of conditions

The proof of success for the VISION EQXX came in April of this year. During a record-breaking first road trip, he covered 1,008 kilometers from Stuttgart to Cassis on the French Mediterranean coast. With temperatures ranging from a chilly 3 to a more spring-like 18 degrees Celsius, he completed that journey with an energy consumption of 8.7 kWh/100 km and a range remaining on arrival of approximately 140 kilometers. But once is not enough. To demonstrate real-world capabilities and take the development process to the next level, the engineering team is conducting a series of road trips to test the technology underlying the VISION EQXX under various conditions.

Keeping a cool head – innovative and efficient heat management

This time the route profile did not come with lower temperatures or the demanding scenarios for energy consumption and recovery of the Alps. The main challenges on this journey were summer temperatures of up to 30 degrees Celsius, combined with increased traffic density around Stuttgart and in the south east of England. Nevertheless, the VISION EQXX kept a cool head the whole time thanks to its innovative heat management system.

Due to the exceptional efficiency of the electric drive unit, it generates only minimal waste heat. This helps keep the heat management system extremely small and lightweight. The carefully designed interaction of aero hatches, coolant valves and pumps ensures that the electric drive unit maintains the most efficient temperature balance at minimum energy costs. It includes a combination of innovative airflow management and a cooling plate installed in the vehicle floor, allowing it to take advantage of the air flowing past the bottom of the VISION EQXX. This is the most aerodynamically efficient way to keep the electric drive unit cool under normal conditions, increasing range by about two percent in the most aerodynamic mode.

High ambient temperatures and stop-and-go traffic on the highway required cooling of the electric powertrain and passenger cabin. However, the on-demand cooling system did it all with no significant impact on range. The multi-source heat pump in the VISION EQXX proved very efficient at keeping the cabin temperature cool in the hot summer weather. During the 14 hours and 30 minutes driving time, the air conditioning was operational for just over eight hours, but had minimal negative impact on the overall energy consumption.

Arrival in Silverstone – over the checkered flag at 1,202 kilometers

On its way back to Silverstone, the VISION EQXX paid a visit to the home of the Mercedes-AMG PETRONAS Formula One Team in Brackley, some eight miles to the south-west, where it was enthusiastically received by the Mercedes-AMG HPP and Mercedes team -Benz Grand Prix which played a crucial role in its design. Working closely with the engineering team in Stuttgart, the Formula 1 and Formula E specialists helped to reduce system losses in the powertrain and develop a completely new compact and lightweight battery pack.

After a driver change, Adam Allsopp, HPP’s Advanced Technology Director, took over for the final leg to Silverstone. The importance of the drive to the racetrack where the very first Formula 1 took placeTM Grand Prix in 1950 had not escaped his notice: “It is personally very special to send this beacon of the future of electric mobility to where the Formula 1 story began and where we have seen and contributed to some iconic Formula 1 races. Completing the journey from Stuttgart to Silverstone on a single charge with even greater efficiency is truly a major step forward in accelerating the technologies underpinning our electrification strategy. The contribution motorsport has made to Mercedes-Benz over the years is significant and makes us very proud.” says Allsopp

Mercedes-EQ Formula E driver Nyck de Vries was waiting on the track to greet the VISION EQXX. The 27-year-old Dutchman, who has won four Formula E victories in the past two seasons, has a lot of experience in extracting every last drop of efficiency from an advanced electric powertrain. However, he did not take it easy on the VISION EQXX and drove on the legendary asphalt at every opportunity to his maximum speed of 140 km/h. He took the checkered flag after 11 laps and used the last charge in the pit lane with 1,202 kilometers on the clock. “The VISION EQXX was a real pleasure to drive. I know what this team is capable of, and it was a real honor to drive such a great car on such a historic track.” says de Vries and adds with a smile: “And I can tell you that the interior is definitely a lot more luxurious than the cockpit of a Formula E car.”

After a weekend trip to Goodwood Festival of Speed, what’s next on the road trip to the electric future?

After a short charge, the VISION EQXX made its way to HPP headquarters in Brixworth, 20 miles away, for an overnight, refreshment and full charge in preparation for its next outing at the Goodwood Festival of Speed ​​this weekend. The VISION EQXX will appear at the famous celebration of historic motorsport alongside other Mercedes icons from the past, present and future, and will also take its turn on the famous hill climb.

With two successful road trips of more than 1,000 km behind it, the VISION EQXX has well and truly justified its claim as the most efficient Mercedes ever built. But the story doesn’t stop there. Work continues on the development of many VISION EQXX technologies for use in future series production vehicles. For the team behind it, which collects invaluable real-life data, the most important question is: where now?

VISION EQXX: the travel log in numbers

Get started Stuttgart Untertürkheim, June 21st2022, 08:15 CEST
Arrival Silverstone, June 22nd2022, 18:02 BST
Itinerary Untertürkheim, Reims, Calais, Brackley
Driving distance 1,202 kilometers
Total driving time (more than two days) 14 hours and 30 minutes
Average speed 83 km/h
Maximum speed 140 km/h
Average consumption 8.3 kWh per 100 km

VISION EQXX: the most important technical data at a glance

Energy content of the battery kWh < 100
Rated voltage volts > 900
Energy consumption kWh/100 km

(miles/kWh)

8.3

(7.5)

Cd where the 0.17
Front side 2.12
Current kW 180
wheelbase mm 2,800
Length Width Height mm 4,975/1,870/1,348
Unladen vehicle weight kg 1,755

SOURCE: Mercedes-Benz

Leave a Comment

Your email address will not be published.