Bugatti-hunting Xiaomi SU7 Ultra hypercar unleashed
Prototype emerges with Chinese brand’s monster new 1139kW V8S electric powertrainXiaomi Auto has pulled the drapes off a prototype version of its all-new 2025 Xiaomi SU7 Ultra hypercar – the Chinese brand’s first model to be powered by its HyperEngine V8S electric motors.
The wild SU7 Ultra features a triple-motor EV powertrain comprising two V8S e-motors and a single V6S motor that, combined, produce 1139kW – more than the 1103kW a Bugatti Chiron musters (but less than the incoming 1342kW Tourbillon).
With that amount of thrust available, it’s no surprise the SU7 Ultra can launch from 0-100km/h in a claimed 1.97 seconds, reach 0-200km/h in 5.97 seconds and hit 300km/h in just 15 seconds.
Top speed is said to be more than 350km/h.
According to Xiaomi, the new HyperEngine V8S e-motor individually produces up to 425kW and 635Nm of torque, while being able to spin up to 27,200rpm – all classing-leading outputs and the reason why the SU7 Ultra can churn out such huge power.
Feeding the SU7 Ultra current is CATL’s Qilin 2.0 high-powered battery created for motorsport. The power pack has lithium iron phosphate chemistry and can be recharged from 0-80 per cent in a claimed 12 minutes.
To help cope with the power output, the wild prototype gets AP Racing high-performance brakes that feature six-piston callipers at the front and rear that have been developed withstand temperatures of up to 800 degrees Celsius.
Supporting those powerful anchors is a brake energy recovery system that can provide a maximum 0.6g of braking.
Under full brakes, Xiaomi can pull an incredible 2.36g, with 100-0km/h achieved in just 25m.
Keeping weight down to a (still portly) 1900kg, the Chinese hyper-sedan features a carbon-fibre body.
Aerodynamic elements include an enormous carbon-fibre rear wing, massive front splitter, two huge bonnet vents, a revised front splitter, side skirts and an oversized diffuser.
Combined, the air-bending additions enable the SU7 to generate an incredible 2145kg of downforce.
Xiaomi now plans to send the car to Germany’s Nurburgring to attempt a lap record for world’s fastest EV sedan, currently held by the Porsche Taycan Turbo GT (7min7sec).
It will also have a crack at stealing the Rimac Nevera’s production EV lap record (7min5sec) and even the outright EV record held set by the Volkswagen ID.R (6min5sec).
Related: Stunning $6m Bugatti Tourbillon hyper-hybrid revealed
Related: Xiaomi SU7 is Chinese smartphone-maker’s first car
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