Mercedes-AMG has achieved something monumental. Its recently unveiled CONCEPT AMG GT XX drove the equivalent of a lap around the Earth, 40,075 kilometers (24,901 miles), in 7 days, 13 hours, 24 minutes, and 07 seconds. Two prototype GT XXs lapped the 12.68-kilometer (7.88-mile) gruelling Nardò ring in southern Italy 3,177 times, averaging more than 5,300 kilometers (3,293 miles) a day, most of it sitting at 300 km/h (186 mph).
We first touched on the GT XX back in late June, when Mercedes pulled the wraps off its bright orange four-door concept. With 1,341 horsepower and a top speed of 223 mph, this futuristic all-electric super sedan is the most powerful AMG ever built, and a clear signal of where Affalterbach is headed next. Back then, the story was design, technology, and ambition. But now, Mercedes has backed it up with real-world hard data, running the car flat out for more than a week to prove the AMG.EA platform’s endurance, and that it is indeed real, production-bound hardware.
The standout figure is this new 24-hour record: 5,479 kilometers (3,405 miles). For context, the XPeng P7 held the previous record at 3,961 kilometers (2,461 miles) and Xiaomi’s YU7 Max managed 3,944 kilometers (2,450 miles). The GT XX edged them out 1,500 kilometers (932 miles), which is a 38 percent jump. Both AMG prototypes that took part finished the run within 25 kilometers (15 miles) of each other, showing repeatability, not chance.
Inspired by the Vision AMG Concept, the GT XX features three axial flux motors, two at the rear and one up front. Compact and lightweight, these motors are three times more power-dense than conventional EV units. Developed with Mercedes-owned YASA in the UK, production involves 100 specialized steps, 65 of them brand new to Mercedes, with 30 patents filed.
The battery is equally radical: 3,000+ cylindrical NCMA cells cooled directly with non-conductive oil for real-time thermal control. The result? No power drop-off even under punishing eight-day loads, and charging happens at 850 kW / 1,000 amps, good for 400 kilometers (249 miles) in just five minutes. Michelin handled the tires, while Alpitronic supplied the charging gear. Several GT drivers rotated in two-hour stints, joined by Mercedes-AMG F1 driver George Russell, who said the motors responded with Formula 1 precision.
“As an F1 driver, I’m used to pushing technology to its absolute limits – the CONCEPT AMG GT XX really impressed me. The axial flux motors respond as immediately and precisely as a Formula 1 drivetrain, but with an endurance that I have only ever experienced with combustion engines. This technology will revolutionise the driving experience, both on the racetrack and on the road.” – George Russell, Mercedes‑AMG PETRONAS F1 team driver
Ambient temperatures reached 35°C (95°F) on the track, yet both cars kept running without failures. That matters because it suggests AMG’s new platform won’t just deliver peak numbers; it can sustain them.
Mercedes isn’t chasing records for publicity alone. The AMG.EA platform that powered the GT XX goes into series production next year, forming the backbone of the German performance brand’s next wave of models. Infrastructure may lag, since the world doesn’t yet have 850-kW chargers, but the hardware is already built for it.
Source: Mercedes-AMG
