Mercedes-AMG GT XX breaks 25 EV endurance records

The biggest complaints about electric cars seem to center on two things: how far they can go and how long they take to recharge. A cross-country trip in an EV often involves more planning than a military operation, with long stops at charging stations. Mercedes-AMG, however, just took a sledgehammer to that narrative with its GT XX concept, a vehicle that went and completely rewrote the rulebook for what electric cars can do.

In a stunning display of power and efficiency, the vibrant orange Mercedes-AMG GT XX concept drove 3,404 miles in a single 24-hour period. This achievement shattered the previous record, held by the XPeng P7, by an incredible 943 miles. The car maintained a near-constant speed of 186 mph, pausing only for lightning-fast charging stops.

The secret to this monumental feat lies in technology that sounds like it belongs in the distant future. The GT XX can charge at 850 kW. Most of today's fast chargers max out around 350 kW. The Mercedes system is more than twice as powerful, allowing the car to add approximately 248 miles of range in just five minutes. A team of 17 drivers, including Formula 1 star George Russell, rotated in two-hour shifts to keep the car moving relentlessly around the track.

After breaking the 24-hour record, the team kept going. For nearly eight days straight, two identical GT XX concept cars lapped the test track. They officially drove the equivalent of the Earth's circumference - 24,901 miles - in an astonishing 7 days, 13 hours, 24 minutes, and 7 seconds. The two electric cars finished within just two laps of each other, proving this was no fluke.

Not content, the team pushed on past the 25,000-mile mark, setting a final benchmark of 7 days, 14 hours, 9 minutes, and 52 seconds. Along the way, the cars set a total of 25 new records for electric vehicle endurance.

The GT XX is a technological powerhouse. It is propelled by three oil-cooled Yasa axial flux electric motors that produce over 1,360 horsepower combined. Two of these motors are located at the rear, making the car predominantly rear-wheel drive like a traditional sports car. A third motor sits at the front, ready to kick in when extra power or traction is needed.

The battery pack is just as impressive as the motors. It uses a new type of cylindrical cell chemistry - Nickel Cobalt Manganese Aluminum (NCMA) - packed into a high-voltage 800V architecture. What truly sets it apart is the cooling system. Instead of conventional methods, the GT XX uses a non-conductive oil that directly cools each of the pack's 3,000 individual cells.

This tech prevents overheating during the extreme stress of 850 kW charging and sustained high-speed driving, a key element that made these records possible. The GT XX might be "only" a concept car, but it serves as a very real preview of the technology heading for Mercedes-AMG's upcoming production electric cars. The days of long charging stops may soon be a thing of the past, but that will come at a premium at first. Not every EV will eventually get 850-kW charging, but many will and puny 150-kW sessions will be a thing of the past.

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