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Xiaomi SU7 Ultra Prototype
- DriveTrain: AWD
- Body Type: Four-door sedan, full-carbon-fiber body
- Battery Capacity:
- Autonomous Driving Level:
PROS
- Set a real, verified record — fastest four-door sedan at the Nürburgring Nordschleife
- Proved Xiaomi could build serious performance hardware before anyone doubted a Chinese EV brand could
- Paved the way directly to a production car that shipped with most of the promised power intact
CONS
- Most "specs" attached to the Prototype are unverified projections, not measured results
- Full-carbon body and other prototype-only elements never made it to the car people could actually buy
The Xiaomi SU7 Ultra Prototype isn’t the same car as the SU7 Ultra you could actually buy, and mixing the two up is the easiest mistake to make with this one. Lei Jun revealed it in July 2024 as a track testbed — four-door, three-motor, all-wheel drive — built to prove Xiaomi could compete on performance before there was even a confirmed production version to sell. It ran the Nürburgring Nordschleife and came out the fastest four-door sedan on record. That happened before Xiaomi had said a word about putting an Ultra variant into showrooms.
The specs get slippery from here. Xiaomi never released a battery size or charging figure for the Prototype itself. The numbers people quote — 1,138 kW (1,526 hp), a 0-100 time under 2 seconds — were pitched at the time as targets for the production car, not measured results off the Prototype. It also had a full-carbon body Lei Jun said flat-out wouldn’t make it to production, on cost grounds. So whatever range or weight number you find attached to “the Prototype” is almost certainly borrowed from the SU7 Ultra that actually launched, which has real, disclosed numbers: 93.7 kWh usable battery, 700 km CLTC range (630 km in some regulatory filings), and DC charging peaking at 473 kW for a 10-80% top-up around 12 minutes. No EPA or WLTP figures exist because Xiaomi hasn’t sold this outside China.
None of that pricing talk applies to the Prototype, though — it was never for sale. The car that did launch, the production SU7 Ultra, started at 529,900 yuan (roughly $73,000), with a Nürburgring Limited Edition at 814,900 yuan (around $112,000). It’s built for people chasing Taycan-level numbers, not for anyone commuting or running a fleet. Inside Xiaomi’s lineup it sits above the standard SU7 and SU7 Pro/Max. Outside it, the Porsche Taycan Turbo GT and Tesla Model S Plaid are the obvious rivals — and the Taycan Turbo GT specifically is the closest match on power, architecture, and Nürburgring credentials, if you need one direct comparison.
Xiaomi SU7 Ultra Prototype Images
Full Specsification
MODEL
| Full Model Name A full model name is the complete, specific designation of a product, software, or system that includes its brand, series, version, and technical configuration. | Xiaomi SU7 Ultra Prototype |
| Segment / Class Segment and Class refer to ways of dividing a large group, data set, or concept into smaller, organized parts. | Track-focused performance testbed (non-production) |
| Powertrain Options Powertrain options refer to the different choices available for a vehicle's power-generating and power-delivering system—the complete assembly that creates energy and pushes the car forward. | AWD |
PRICE & AVAILABILITY
| Base Price A base price is the starting cost of a product or service before adding any extra fees, taxes, optional upgrades, or discounts | N/A — never sold |
| Availability Status Availability status means the current condition or state of whether a person, product, system, or resource is accessible, online, or ready for use. | Discontinued |
| Markets Available "Markets available" generally means the specific geographic regions, stores, or consumer groups where a product or service is ready and offered for sale. | N/A — testbed only, ran at Nürburgring, Germany |
| Brand / Manufacturer brand is the name, term, design, or symbol that identifies a seller's product and shapes public perception, while a manufacturer is the actual company that physically produces or builds the goods. | Xiaomi EV |
BATTERY & CHARGING
| Battery Capacity Battery capacity is the total amount of electrical energy a battery can store and deliver, functioning much like the size of a fuel tank. | Not disclosed |
| Range The word range means a set of different things, a scale between limits, or the distance an object can cover. | Not disclosed |
| DC Charging DC charging stands for direct current charging, a high-power method that sends electricity straight to an electric vehicle's battery without needing an internal conversion step. | Not disclosed |
| Charging Time Charging time is the total length of time required to recharge a battery from empty to full capacity. | Not disclosed |
| AC Charging AC charging means supplying alternating current (AC) from the electrical grid to an electric vehicle, where the car's built-in onboard charger converts it into direct current (DC) to power the battery. | Not disclosed |
| Battery Warranty A battery warranty is a guarantee from a manufacturer or seller to repair or replace a battery if it fails due to factory defects within a set time. | N/A |
| Energy Consumption Energy consumption is the total amount of energy used by a person, building, device, or country over a specific period. | Not disclosed |
PERFORMANCE
| Power Output Power output is the rate at which a device, system, or living body generates, transfers, or delivers energy (doing work over time). It is typically measured in watts (W) or kilowatts (kW). | 1,138 kW (1,526 hp) combined — projected figure for production, not an independently confirmed prototype-only test |
| Acceleration Acceleration is the rate at which an object changes its velocity over time. | 1.97 sec |
| Motor Configuration Motor configuration refers to the physical layout, internal electrical wiring setup, or software/hardware settings of a motor. | Three motors — two rear V8s + one front V6s |
| Torque the rotational equivalent of linear force—it is the twisting or turning power that causes an object to rotate around an axis or pivot point. | Not separately disclosed for the prototype |
| Top Speed Top speed means the highest or maximum velocity that a vehicle, runner, or object can achieve under ideal conditions. | 350 km/h |
BODY & DIMENSIONS
| Dimensions A dimension is a measurement in a specific direction (such as length, width, or height) or a distinct aspect, feature, or scope of a situation. | Not separately published; based on standard SU7 shell |
| Trunk/Boot Capacity Trunk or boot capacity refers to the total volume of storage space available in the rear cargo compartment of a vehicle. | Not disclosed |
| Body Style A car's body style refers to the overall shape, structural design, and external configuration of a vehicle. | Four-door sedan, full-carbon-fiber body (dropped for production due to cost) |
| Kerb Weight Kerb weight is the total mass of a vehicle with all standard equipment and necessary operating fluids, but without any passengers or cargo. | Not disclosed |
| Ground Clearance Ground clearance is the vertical distance between the lowest part of a vehicle's frame or undercarriage and the flat ground below it | Not disclosed |
| Frunk/Bonnet Capacity Frunk/bonnet capacity is the total volume of storage space available under the front hood (bonnet) of a vehicle. | Not disclosed |
| Sunroof A sunroof is a movable panel in a vehicle's roof that opens or tilts to let in fresh air and sunlight. | Not disclosed |
SAFETY & DRIVER ASSISTANCE
| ADAS Features ADAS stands for Advanced Driver Assistance Systems, which are electronic technologies in modern vehicles designed to increase road safety, enhance driving comfort, and prevent crashes by minimizing human error. | Not disclosed for prototype |
| Autonomous Driving Level Autonomous driving levels are a standardized six-stage classification system created by SAE International (ranging from Level 0 to Level 5) that measures how much control a vehicle's automated system takes compared to a human driver | Not disclosed |
| Crash Test Ratings Crash test ratings are standardized scores that measure how well a vehicle protects its occupants during controlled collision simulations. | N/A — never crash tested or street certified |
| Over-the-Air (OTA) Updates An Over-the-Air (OTA) update is the wireless delivery and installation of software, firmware, or operating system updates to a connected device via Wi-Fi or cellular networks | N/A |
COMFORT & SEATING
| Seating Capacity Seating capacity means the maximum number of people who can sit in a specific space, vehicle, or venue. | 5 |
| Seat Material Seat material refers to the fabric, leather, or synthetic substance used to cover or build a seating surface. | Not disclosed |
| Wireless Charging Wireless charging is a cable-free method that powers electronic devices by transferring energy through electromagnetic fields instead of a physical plug. |
DISPLAYS & CONNECTIVITY
| Centre Screen A centre screen (or center display) is a built-in digital display panel located in the middle of a vehicle's dashboard or console | Not disclosed |
| Mirror Link MirrorLink is a connectivity standard that projects a smartphone’s screen and compatible apps onto a car's built-in infotainment dashboard. | |
| Apple CarPlay Apple CarPlay is a smart software standard created by Apple that puts an iPhone interface directly onto a car's built-in display screen. | |
| Android Auto Android Auto is a software platform developed by Google that projects a driver-safe, simplified version of your Android phone onto your car's central dashboard display | |
| Driver's Display A driver's display is the digital or analog instrument panel mounted directly behind the steering wheel that shows real-time driving data like speed, fuel or battery level, and warning alerts | Not disclosed |
| Head-Up Display (HUD) A head-up display (HUD) is a transparent screen that projects data directly into your line of sight so you never have to look away from your main view. | Not disclosed |
KEY EV TECH
| Vehicle-to-Load (V2L) Vehicle-to-Load (V2L) is a bidirectional charging feature in some electric vehicles (EVs) that turns the car's high-voltage battery into a mobile power source for external electrical devices. | |
| Vehicle-to-Grid (V2G) Vehicle-to-Grid (V2G) is a system that allows electric vehicles (EVs) to send stored electricity back into the public power grid using bidirectional (two-way) chargers. |
ADDITIONAL SPECS
| Headlight Type Headlight "types" refer to either the lighting technology used (like halogen or LED) or the socket/bulb code (like H7 or HB3) required for your vehicle's specific assembly | Not disclosed |
| Adaptive Headlights Adaptive headlights are intelligent vehicle lighting systems that automatically change their direction, range, or brightness to match driving conditions and improve nighttime visibility. | |
| Sound System Brand Audio branding (also called sonic or sound branding) is the strategic use of music, voice, and unique sounds to give a brand an audible identity | Not disclosed |
| Speaker Count Speaker count is the audio processing task of automatically estimating the total number of unique or simultaneous people speaking in a recording. | Not disclosed |
| Navigation System A navigation system is an electronic tool that finds a vehicle's exact location and guides the user along a route to a destination. | Not disclosed |
| Face Recognition Face recognition is a technology that uses computers to identify or verify a person's identity by analyzing unique facial features from a digital image or video. | |
| Fingerprint Sensor A fingerprint sensor is an electronic biometric hardware device that captures the unique pattern of ridges and valleys on a fingertip to identify and authenticate a person. | |
| Remote Parking Remote parking means an advanced driver-assistance technology that lets you park or move your vehicle using a smartphone app or a key fob while standing outside the car. | |
| Official Dealer Network An Official Dealer Network is a group of authorized, independent businesses approved by a manufacturer to sell, maintain, and repair its products in specific regions. | N/A — never sold |
| Service Interval A service interval is the recommended schedule of distance, time, or operating hours between routine maintenance checks for a vehicle or piece of equipment. | N/A |
| Roadside Assistance Roadside assistance is a support service for drivers whose vehicles break down or stop working due to a mechanical failure, flat tire, or dead battery | N/A |
NOTE
| Data Source A data source is the origination point or specific location where information comes from before it is collected, processed, or analyzed | Xiaomi press reveal (July 2024, Lei Jun's annual presentation); Nürburgring record coverage (2024) |
User Reviews
Product FAQ
Is the SU7 Ultra Prototype the same car you can buy today?
No. The Prototype was a pre-production testbed shown in July 2024. The car that actually went on sale — the production SU7 Ultra — launched in February 2025 and differs in several ways, including the body material.
What did the Prototype actually accomplish?
It set a real, verified record: fastest four-door sedan at the Nürburgring Nordschleife, with a lap time of 6:46.874.
What power and speed figures are tied to it?
1,138 kW (1,526 hp), a 0-100 km/h time around 1.97 seconds, and a 350 km/h top speed. Important caveat: these were framed at the time as targets for the eventual production car, not independently confirmed prototype-specific test results.
Does it have a confirmed battery size or range?
No. Xiaomi never disclosed battery capacity, range, or charging specs for the Prototype itself. Those numbers only exist for the production SU7 Ultra that followed.
Why doesn't the Prototype have disclosed specs like weight or dimensions?
Because it was never meant to be sold or certified. It was a track tool built to prove a point, not a vehicle Xiaomi engineered for public disclosure or regulatory filing.
What was different about its body?
It used a full-carbon-fiber body. Lei Jun said this wouldn't carry over to production because of cost — the production Ultra uses carbon fiber more selectively (like the roof), not throughout.
Can I buy or order the Prototype?
No, and you never could. It was never for sale. If you want the closest thing, the production SU7 Ultra is available in China starting at 529,900 yuan, with a Nürburgring Limited Edition at 814,900 yuan.
How does the Prototype relate to the Xiaomi Vision Gran Turismo?
They're separate projects. The Prototype is a real, physical track car Xiaomi built and tested. The Vision GT is a virtual concept made only for the Gran Turismo video game — the Prototype's Nürburgring run is actually what got Xiaomi invited into that program.
Disclaimer Note
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