Xiaomi SU7 Max Sets New 24-Hour Speed-Endurance Record, Covering 4,264 km

Electric vehicles are evolving beyond mere battery capacity or advanced touchscreens. In China, automakers have chosen a more rigorous testing method to demonstrate their capabilities: endurance challenges. In its latest endeavor, the next-generation Xiaomi SU7 Max was put to the test on a high-speed track to determine how far it could travel within a single day. After 24 hours of continuous driving and charging, the sedan covered 4,264 km.

This remarkable feat establishes a new world record for mass-produced vehicles in this specific endurance test, nearly equating to the driving distance between New York City and Los Angeles, or from Madrid to Moscow. Completing either of these journeys continuously would typically require nearly 48 hours. Xiaomi's performance surpassed the previous record held by the Xpeng Next P7 and outperformed luxury brands like the Porsche Taycan and the new Mercedes-Benz CLA, which recorded distances of 3,425 km and 3,717 km, respectively.

The test was conducted on a 7.8-km oval track in Yancheng, China. Throughout the 24-hour period, the Xiaomi SU7 Max maintained speeds of up to 240 km/h. Xiaomi's CEO, Lei Jun, likened the test to "running a marathon at sprint speed." Such a driving regimen is extremely taxing on a vehicle, generating significant heat in the motors and batteries, which typically hinders electric car performance.

To manage this heat, the SU7 is equipped with a specialized thermal management system, mirroring that of the high-performance SU7 Ultra. This system effectively kept the 101.7-kWh battery at optimal temperatures, allowing for sustained high speeds and rapid charging. Although the vehicle needed to stop at several intervals for charging during the 24-hour challenge, it spent minimal time stationary. Thanks to its 897V architecture, the car can gain 670 km of range in just 15 minutes.

The secret behind this record-setting performance lies in its hardware. The 2026 Xiaomi SU7 Max is upgraded with V6s Plus motors capable of spinning at 22,000 rpm, enabling the car to reach a top speed of 265 km/h. For regular use, the vehicle offers an impressive range of 835 km on a full charge, with a power output of 495 kW (approximately 673 horsepower) and 838 Nm of torque.

Safety was also a key focus in the latest model. The sedan boasts a reinforced body designed to withstand significant impacts, featuring an anti-roll structure and nine airbags for maximal occupant protection. Despite its performance capabilities, the vehicle retains the dimensions of a comfortable family sedan, measuring 4,997 mm in length, 1,963 mm in width, and 1,440 mm in height, along with a spacious 3,000 mm wheelbase that offers ample legroom.

Xiaomi has been rapidly advancing since entering the automotive sector. While the company initially gained fame for its smartphones, its electric vehicles are quickly amassing a following. In 2025, Xiaomi delivered over 411,000 vehicles. The next-generation Xiaomi SU7 Max is slated for an official launch in April 2026, with pre-orders currently available at a price of RMB 309,900 (€37,960).

This pricing, coupled with the car’s capacity to set endurance records and outperform most sports cars, is attracting a great deal of attention from drivers worldwide. The endurance test showcases electric vehicles' ability to withstand extreme conditions, with Xiaomi demonstrating that the divide between traditional automakers and tech-centric startups is narrowing significantly.

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