Mercedes-Benz Vision EQXX has beaten its own efficiency record in real-world
driving with another 1,000 km+ journey on a single battery charge. Following
its record-breaking maiden drive from Stuttgart to Cassis (France) in April,
the research vehicle set the bar even higher, witha1,202-kilometreroad trip
from Stuttgart to Silverstone in the UK.
negotiating an autobahn closure and demanding cross-country diversion near
Stuttgart,the Vision EQXX crossed the French border near Strasbourg then cruised
across northern France at highway speeds to Calais, where it boarded the
Eurotunnel. Continuing its journey in the UK, it took the M25 around London
then stopped off at Mercedes-Benz Grand Prix in Brackley.
to greet it there were the Formula 1and Formula E experts who helped develop
its advanced drivetrain. The Vision EQXX then carried 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, 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. Making the most of the occasion, he completed 11 laps,
using the last of the charge on 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 the face of heavy traffic and summer
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 programme.
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 to show 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.
Once is not enough
– Vision EQXX proves real-world capability across a wide range of conditions
proof of success for the Vision EQXX came in April this year. A record-breaking
maiden road trip saw it cover 1,008 kilometres from Stuttgart to Cassis on the
French Mediterranean coast. With temperatures ranging from a chilly 3 to a more
spring like 18 degrees Celsius, it completed that journey with energy
consumption of 8.7 kWh/100 km and a remaining range on arrival around 140
kilometres. But once is not enough. To demonstrate true real-world capability
and to take the development process to the next level, the engineering team are
running a series of road trips to test the technology underpinning the Vision EQXX
under different conditions.
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 aero-shutters,
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.
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. 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.
Arrival at Silverstone – taking the
chequered flag at 1,202 kilometres
the home straight to Silverstone, the Vision EQXX paid a visit to the home of
the Mercedes-AMG Petronas Formula One Team in Brackley, some 13 kilometres to
the southwest, where it received an enthusiastic welcome from the team from
Mercedes-AMG HPP and Mercedes-Benz Grand Prix who played a pivotal role in its
design. Working hand-in-hand with the engineering team in Stuttgart, the Formula
1 and Formula E specialists helped slash system losses in the drivetrain and
develop a completely new compact and lightweight battery pack.
a driver change, it was HPP’s Advanced Technology Director Adam Allsopp who
took over at the wheel for the final leg to Silverstone. The significance of
the drive to the racing circuit which hosted the very first Formula 1 Grand
Prix in 1950 was not lost on him:“Driving this beacon of the future of electric
mobility to the place where the Formula 1 story began, and where we’ve seen and
contributed to some iconic Formula 1 races is personally very special. Completing
the journey from Stuttgart to Silverstone on a single charge with even greater
efficiency really evidences some great progress in accelerating the
technologies underpinning our electrification strategy. The contribution made over
the years by motorsports at Mercedes-Benz is significant and it makes us very
proud,” says Allsopp.
at the track to greet the Vision EQXX was Mercedes-EQ Formula E racing driver
Nyck de Vries. The 27-year-old Dutchman, who scored four Formula E wins in the
last two seasons, has plenty of experience at coaxing every last drop of
efficiency from an advanced electric drivetrain. However, he didn’t go easy on
the Vision EQXX, taking it up to its maximum limited speed of 140 km/h at every
opportunity on the fabled tarmac.
He took the chequered flag after 11 laps, using
up the last of the charge in the pit lane with1,202 kilometres on the clock.
“The VISION EQXX was a true pleasure to drive. I know what this team is capable
of, andit was a real honour to drive such an amazing car on such a historic
track,” says de Vries, adding with a smile: “And I can tell you that the
interior is definitely a lot more luxurious than the cockpit of a Formula E
weekend trip to Goodwood Festival of Speed, where next on the road trip into
the electric future?
a brief recharge, the VISION EQXX continued on its way to HPP headquarters in
Brixworth 33 kilometres away for an overnight stop, refresh and full recharge
in preparation for its next outing this weekend at the Goodwood Festival of
Speed. Appearing at the renowned celebration of historic motorsports alongside
other Mercedes icons of the past present and future, the VISION EQXX will also
take its turn on the famous hill climb.
two successful 1,000 km+ road trips under its belt, the Vision EQXX has well
and truly justified its claim as the most efficient Mercedes ever built. But
the story doesn’t end there. Work continues on the development of many Vision EQXX
technologies for application in future series-production vehicles. For the team
behind it, gathering invaluable real-life data, the most important question is:
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