The Mercedes-AMG Concept GT XX has covered 40,075 km at the Nardò proving ground in 7 days, 13 hours, 24 minutes and 7 seconds. The electric prototype effectively drove the distance of the Earth's equatorial circumference and, according to Mercedes-AMG, established 25 long-distance records for electric vehicles.
The most notable figure came from the 24-hour run. The GT XX covered 5,478.881 km in one day, improving the previous benchmark by more than 1,500 km. Two prototypes alternated sustained high-speed running with charging stops, travelling at around 300 km/h during their stints. After more than 40,000 km, only 25 km separated the two cars.
The exercise was a demonstration of the future AMG.EA architecture. The concept uses three axial-flux motors and a directly liquid-cooled battery. Mercedes quotes peak output above 1,000 kW and says average charging power during the record attempt was around 850 kW. These are technology-demonstrator figures rather than homologated production-car specifications.
The achievement is therefore best understood as an extreme durability test of the drivetrain and thermal-management system. AMG repeatedly subjected the cars to the combination of sustained high-speed driving and very rapid charging, precisely the cycle that places heavy loads on motors, batteries and power electronics.