In May, a Xiaomi SU7 owner in Hunan experienced an unprecedented "brake failure" incident. While reversing, the brakes felt completely unresponsive, with no resistance whatsoever. The vehicle visibly shook, and the screen lit up with warnings such as "Brake Performance Limited," "Brake System Failure," "Automatic Parking Failure," and "Hill Start Assist Function Abnormal." After the vehicle stopped, the owner could still push the car, clearly indicating an automatic parking failure. The owner called Xiaomi's 400 hotline but received no answer and did not get timely assistance even after pressing the emergency rescue button, highlighting the poor quality of Xiaomi's after-sales service.
The most disappointing aspect is the official attitude towards the incident. The owner later accessed the official backend data, which showed that for 1 to 2 seconds, the pressure value in the main brake cylinder was 0. However, a senior official from Xiaomi responded by saying, "The pressure value in the main brake cylinder was 0. but this does not mean a complete loss of braking power," and "There was no complete brake system failure or vehicle out of control."
Such a statement is shameless. Even without a booster pump, you can still stop the car; whether it takes 200 or 300 meters to stop from 100 km/h is another matter. The vehicle did not lose control simply because it was in a low-speed parking state. If the car had been traveling at 100 km/h and brake failure occurred, could the officials guarantee that the vehicle would not have lost control?
Playing word games with statements like "no complete brake system failure"? Adding the word "complete" doesn't exonerate them. This is like saying that even if an airplane engine fails, it doesn't mean the plane will completely crash because you can still glide and make an emergency landing. The reason the Xiaomi SU7 in Hunan didn't "crash" was merely that it wasn't flying at the time of the malfunction.
Can people accept such explanations? Therefore, Xiaomi really shouldn't try to build airplanes like Honda.
Additionally, it's said that the Xiaomi SU7's brakes have a so-called dual backup design, which should theoretically enhance reliability. The official explanation for the failure is that the brake master controller had a system misidentification. But has Xiaomi clarified the logic behind this misidentification? If not, similar failures could occur in the future. This is just the beginning, and we'll be watching closely!
