German luxury car manufacturer also claims that it completed 40,075 kilometres—the Earth’s circumference—in 7 days, 13 hours, 24 minutes, and 7 seconds, averaging 5,300 kilometres per day at a consistent speed of 300 km/h (186 mph).
The GT XX set additional endurance records, including 2,000 km in 8.4 hours, 10,000 km in 1 day and 20 hours, 20,000 km in 3 days and 22 hours, and 26,808 km in 120 hours. Other records were established for 12, 48, 72, 96, 144, and 168 hours of continuous driving.
Two GT XX vehicles participated in the test, finishing just 25 kilometres apart after completing 3,177 laps of the 12.68-kilometre Nardo circuit. The challenge, named “Around the World in 80 Days” in reference to Jules Verne’s novel, was independently verified to ensure accuracy, said Mercedes.

CONCEPT AMG GT XX
A team of 17 drivers, including Mercedes-AMG Petronas F1 driver George Russell, took turns driving in two-hour shifts. Russell praised the axial flux motors for their immediate and precise response, comparing their performance to a Formula 1 drivetrain while noting their superior endurance.
The GT XX, built on the AMG.EA high-performance electric architecture, features two motors on the rear axle and a front booster motor that activates for extra power or traction, enabling a top speed of 360 km/h.

Mercedes said that the concept GT XX can gain up to 400 kilometres of range in just five minutes.
The vehicle’s battery, composed of over 3,000 cylindrical nickel cobalt manganese aluminium (NCMA) cells with an energy density of 300 watt-hours per kilogram, uses an oil-cooling system and supports ultra-fast charging at 850 kW. This allowed the GT XX to gain 400 kilometres of range in just five minutes.
The vehicles maintained performance with support from Michelin tires and Alpitronic charging stations. The GT XX averaged 136.6 mph (220 km/h), including stops totalling 48.6 hours over the 40,075-kilometre run, meaning it was stationary for about 22 minutes per hour of driving, primarily for charging. At 850 kW, the vehicle consumed approximately 0.6 miles per kWh.

Mercedes-AMG stated that the GT XX is expected to compete with the Porsche Taycan.
Mercedes-AMG stated that the GT XX previews its upcoming production electric sedan and crossover, expected to compete with the Porsche Taycan. The prototype’s design draws inspiration from the record-setting Mercedes C-111 of the 1970s, and its performance builds on the brand’s history of innovation, including the Mercedes-AMG ONE’s Nürburgring lap record in 2022.