From Stuttgart (Germany) to Silverstone (UK) on a single battery charge

July 1, 2022
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The Mercedes Benz most efficient EV VISION EQXX has broken its own efficiency record travelling 1,202 km from Stuttgart (Germany) to Silverstone (UK) on a single battery charge.

During the 14 hours and 30 minutes of driving time, the air conditioning was operational for just over eight hours, yet had a minimal negative impact on overall energy consumption.

Mercedes-EQ Formula E team, opted not to go easy on the research vehicle, taking it up to its maximum speed limit of 140 km/h on the iconic British race track. 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 the face of heavy traffic and summer temperatures.

As well as proving the effectiveness of Mercedes-Benz electric efficiency technologies in a wide range of real-life traffic scenarios, the VISION EQXX’s long-distance journeys on public roads provide R&D experts with valuable data for the ongoing development program.

“The journey continues – even further, even more efficient! Yet again, the VISION EQXX has proven that it can easily cover more than 1,000 km on a single battery charge, this time faced with a whole different set of real-world
conditions. As Mercedes-Benz strives to go all-electric by 2030 wherever market conditions allow, it is important toshow to the world what can be achieved in real terms through a combination of cutting-edge technology, teamwork
and determination,” says Markus Schäfer, Member of the Board of Management of Mercedes-Benz Group AG, Chief Technology Officer responsible for Development and Procurement.

The exceptional efficiency of the electric drive unit means it generates only minimal waste heat. This helps keep the thermal management system extremely small and lightweight. The carefully engineered interaction of aeroshutters, coolant valves and pumps ensures the electric drive unit maintains the most efficient temperature balance at minimum energy cost.

It encompasses a combination of innovative air-flow management and a cooling
plate installed in the vehicle floor, enabling it to take advantage of the air flowing along the underside of the VISION EQXX.

This is the most aerodynamically efficient way of keeping the electric drive unit cool under normal conditions, allowing an increase in range of around two percent in the most aerodynamic mode.

High ambient temperatures and stop-and-go motorway traffic necessitated cooling of the electric drivetrain and passenger cabin. However, the on-demand cooling system took it all in its stride with no significant impact on range. The multi-source heat pump in the VISION EQXX proved highly efficient at keeping the cabin temperature cool in the warm summer weather.

Driving distance 1,202 kms
Total driving time (over 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

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