On July 19, Xiaomi unveiled its supercar variant of the Xiaomi SU7, named the SU7 Ultra. The car's dimensions are longer, wider, and lower than the base model, and is equipped with ICE-inspired motor name from traditional powertrains, the HyperEngine V8s.
The SU7 Ultra features the world's first release of the CATL Kirin II battery pack with 1,330 kW maximum power output during discharge, with 897 V peak voltage and 5.2 C charging rate (5.2 times its capacity per hour).
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What made the headline is SU7 Ultra's astonishing sheer power output of 1,549 horsepower, which far exceeds the likes of million-dollar internal combustion supercars such as the Bugatti Veyron at USD 2.3 million.
That amount of power output ranks the SU7 Ultra fourth globally, behind the Lotus Evija, Aspark Owl, and Rimac Nevera.
China alone accounts for six of the ten highest power production cars, with notable names such as the 2016 NIO EP9 with 1,360 PS and the 2023 ZEEKR 001 FR with 1,264 PS.
For comparison, the Lucid Air Sapphire, coined as the most powerful saloon in the world by Yahoo, can achieve 1,251 PS. The 2024 Tesla Model S Plaid, powered by 3 electric motors, can achieve 1,034 metric horsepower.
Lei Jun announced that the SU7 Ultra will challenge the mass-produced Nürburgring non mass-produced lap record this October and the production/street-legal lap record in 2025. Xiaomi's objective, said Lei Jun, is to become the fastest four-door electric car at the Nürburgring track within ten years.
Located in Germany, Nürburgring Nordschleife (North Loop) stretches 20.8 km long and is widely used by automotive outlets to benchmark a car's performance and grab major headlines.
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The current non mass-produced (non road-legal) lap record belongs to the Porsche 919 Hybrid EVO with a time of 5:19.546. The Lotus Evija X, which has the highest output power of any production car with 2,039 PS, set the third best non road-legal time of 6:24.047. Meanwhile, the production vehicle record belongs to Mercedes-AMG One, set on October 28, 2022 with a time of 6:30.705.
The Xiaomi SU7 Ultra dual V8s + V6s motors can achieve up to 27,200 rpm (revolutions per minute), which outclasses its original SU7's 21,000 rpm. A future HyperEngine is in the pre-research phase with a carbon-sleeved rotor that can achieve 35,000 rpm.
The Ultra can achieve an acceleration time of 0-100 km/h in merely 1.97 seconds, 0-200 km/h in 5.96 seconds, and 0-300 km/h in 15.07 seconds with a top speed exceeding 350 km/h.
The SU7 Ultra's 0-100 km/h acceleration speed will rank fourth, only behind the Aspark Owl's 1.75s, Rimac Nevera's 1.81s, Pininfarina Battista's 1.86s, and Lucid Air Sapphire's 1.95s.
Only three electric cars have achieved a higher top speed, the Rimac Nevera with 412 km/h and the Aspark Owl / Tesla Roadster with 400 km/h. The Lucid Air Sapphire tops at 330 km/h, while the Lotus Evija (with the highest motor output power) peaks at 322 km/h.
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Another prototype of the SU7 Ultra used 100% carbon fiber body panels, which include 24 parts with a total area of 15m². This version further reduces the total weight of the car to 1,900 kg. In comparison, the Tesla Model S Plaid weighs 2,162 kg.