The achievement continues Mercedes’ record-breaking legacy, echoing the C111 prototypes of the 1970s.
How the GT XX broke records
Central to the record-breaking performance was the GT XX’s advanced electric drivetrain, according to Mercedes-AMG CEO Michael Schiebe. The system employs two axial-flux motors at the rear and a third unit at the front, all operating on an 800-volt architecture and producing a combined 1341bhp.
The car maker said an energy replenishment strategy drawing heavily on the prototype’s ability to charge at rates between 850kW and 900kW proved crucial to the record haul, providing ultra short stopping times.
The GT XX’s cylindrical cell battery, developed in-house with input from Mercedes-AMG’s Formula 1 powertrain division at Brixworth, features a 114kWh oil-immersed pack using direct liquid cooling with 40 litres of coolant maintained at constant temperature.
This oil-immersion technology is claimed to deliver superior heat transfer compared with conventional systems, sustaining ultra-high charging rates without degradation and enabling a theoretical 249-mile top-up in approximately five minutes.
“Enormous performance and extremely fast charging were always available and made these records possible. For customers of our future electric models, this means they will get a genuine AMG – no ifs, no buts,” said Schiebe.
