The Xiaomi SU7 Ultra is an ultra-performance electric car developed from the standard SU7 model, aimed at track-ready speed but still fully legal for road use. The detailed specifications, dimensions, and weight show the car fitted with an Aero Kit all around, slightly enlarging its size compared to the standard model: length 5,115 mm, width 1,970 mm, height 1,465 mm, wheelbase 3,000 mm, and a curb weight of approximately 2,360 kg.
The design incorporates 21 carbon fiber components around the car (covering 5.5 square meters) to reduce weight and generate substantial downforce of up to 285 kg at high speeds.
The powertrain uses a tri-motor electric system with all-wheel drive (AWD). It features two new HyperEngine V8s motors on the rear axle and one V6s motor on the front axle, delivering a maximum output of 1,548 horsepower (PS) or 1,138 kilowatts, with a peak torque of 1,770 Newton-meters. Acceleration is 0-100 km/h in 1.98 seconds, 0-200 km/h in 5.86 seconds, and a top speed of 350 km/h.
The CATL Qilin 2.0 high-power track battery has a capacity of 93.7 kWh and provides a maximum driving range of 620 to 630 km (CLTC standard). It utilizes an 800V architecture and supports fast DC charging, achieving 10-80% charge in 11 minutes, with a discharge rate up to 1,330 kW to meet track energy demands.
The braking system features large Carbon Ceramic discs (440 mm front, 410 mm rear) with Akebono calipers (six-piston front, four-piston rear). The braking distance from 100 to 0 km/h is just 30.8 meters, with heat resistance exceeding 1,300 degrees Celsius.
The suspension uses dual-chamber air springs coupled with electronically adjustable Continuous Damping Control (CDC) shocks, upgradeable to Bilstein EVO T1 coilover shocks with 10 adjustable levels. Wheels are lightweight 21-inch alloy with exclusive Ultra design, fitted with high-performance Pirelli P Zero (Elect) tires: 265/35 R21 front and 305/30 R21 rear. The Xiaomi SU7 Ultra prototype previously set the record as the fastest four-door car around the Nürburgring Nordschleife with a time of 6:46.874 minutes.
The design and driving performance of the Xiaomi SU7 Ultra are built on the concept of blending a "race car that can be driven on the road" with "intelligent technology."
1. Design & Aerodynamics: The focus is not just aesthetics but functional performance, where every added detail improves overall efficiency.
The Aero Kit includes a large front splitter and U-shaped air intakes that increase front downforce, plus a larger air dam that improves cooling efficiency by 10%.
The active rear diffuser features two automatic adjustable levels to balance aerodynamic drag and downforce according to speed.
A fixed carbon fiber rear wing measuring 1,560 mm wide works with other components to generate massive downforce of 285 kg, enhancing vehicle stability in high-speed corners.
Lightweight materials include 21 carbon fiber points around the car covering 5.5 square meters, such as a 1.7 square meter carbon roof that reduces weight by 11 kg, and Alcantara interior materials that cut weight by 50% compared to traditional leather.
2. Driving Performance & Chassis
The SU7 Ultra excels not only in straight-line speed but is also tuned for precise handling:
Tri-motor Vectoring allows independent torque control at each wheel, improving cornering stability and sharpness.
The intelligent Dual-chamber Air Springs suspension adjusts damping and stiffness with a 42% wider range than the standard model.
Bilstein EVO T1 (optional) is a race-grade coilover shock absorber with 10 levels of adjustable damping.
The Track Master App is special onboard software that records lap times, analyzes steering angles and G-forces, and can instantly export driving videos.
Electric Sport Sound features a synthetic audio design that delivers an aggressive and exciting experience in sport driving mode.
3. Daily Use vs Track
Despite hypercar-level performance, Xiaomi incorporates comfort technology:
The Smart Cabin has a 16.1-inch 3K resolution screen running on HyperOS, enabling seamless connectivity with the Xiaomi Ecosystem devices.
The ADAS safety system includes Lidar and dual NVIDIA Orin X chips supporting autonomous driving and collision warnings.
Comfort features include sporty seats that provide firm support during aggressive driving, along with massage, ventilation, and heating functions.
This is a car suitable both for daily errands and for setting track records. The launch price in China is 814,900 yuan, with an estimated Thai price after tax around 4,180,000 baht.