BYD filed a design patent this week, and the drawing matters less than where BYD says the robot will go.
On 9 October, China’s National Intellectual Property Administration published an “Embodied AI Robot” design patent with BYD as the holder, according to CarNewsChina and Star News Korea. The drawings show a black-and-white humanoid with a rounded, screenless head and jointed torso, arms and legs, designed to walk, balance and interact with people. It looks very like “Xiao Di”, a robot a BYD executive teased on social media earlier this year. Figures disclosed earlier put Xiao Di at 1.61 metres and 58.5 kilos, with 31 degrees of freedom and a hand accurate to plus or minus one millimetre. BYD has not confirmed that the patent shows the production model.
Most carmakers now have a humanoid in a slide deck. BYD has also said where its one will work. According to CarNewsChina, its executives plan to deploy these robots across the company’s own dealership network, to greet customers, explain the cars and demonstrate the in-car infotainment. They are meant for the showroom, not the factory.
That makes this a retail story. For twenty years the dealership has been the weak link for premium car brands. Service varies from one site to the next, and a carefully built brand can be undersold by whoever happens to be on the floor that Saturday. BYD wants to automate the one role no carmaker has ever controlled: a salesperson who never has an off day, never improvises the pitch, never forgets the script, and demonstrates the infotainment the same way in Shenzhen as in Stuttgart. The robot is the headline. The bigger change is brand control reaching the last metre of the sale, the one part the brand has never owned.
China matters here because of how BYD builds. It is the world’s largest integrated maker of electric vehicles, and it is making this robot the way it makes everything else: in-house, at scale and from its own parts. It set up a dedicated robotics team in 2022, invested in AgiBot in 2023 and took a stake in Percibot in 2025. It has also been running Ubtech’s Walker S1 inside its own Changsha plant to collect operating data. BYD already makes the batteries, motors and actuators and runs the factory floor, so the robot is simply the next product down the same line. A Western carmaker partners with a robotics firm and negotiates over the margin. BYD owns both sides of that deal, and Western boards keep underestimating what that is worth.
There is reason for caution. A design patent is a drawing. There is no price, no reliability data and no deployment date, and Xiao Di may never get beyond the teaser video. A hand accurate to a millimetre still has to survive a showroom full of children and spilled coffee. So far BYD has shown renders and no revenue, and scepticism is fair.
The intent is still clear. BYD wants to know whether a humanoid can be the brand’s own face in the room where the sale happens. That is a far more commercial question than whether one can work in a warehouse, and almost no Western retailer or carmaker is seriously asking it yet.
What to watch. See whether BYD puts one of these robots on a dealership floor before it puts one in a factory. The order of deployment will show what BYD thinks the robot is for. If customers meet it first, BYD is selling brand control rather than cost savings, and that is the version retail executives should worry about.
The Roth Read. Picture the robot on your own shop floor, in your uniform, saying your words every time, without fail. BYD has said its humanoid belongs where the customer decides, in the showroom. If your brand still treats the last metre of the sale as somebody else’s problem, BYD is about to show you what that assumption costs.