How did Huawei Maextro V800 brake pedal fail?

TL;DR

The Maextro V800 brake pedals snapped in multiple tests, with pedals piercing the firewall at around 1612 Newtons during a 100 km/h to 0 stop. Huawei says the cars meet national standards and will upgrade safety margins, while Dongchedi and others argue the tests reflect standard industry benchmarks rather than extreme scenarios.

Transcript

Everyone, I just got back from Europe this morning. I spent about 12 days in Europe this time, and I must say I gained quite a lot. If I have time in the next couple of days, I'll share my experiences from the trip with you all. But today, after I got home from the airport and dropped off my luggage, I came straight to the office. It’s not ... Read More

Key Insights

• The Dongchedi test repeatedly caused three Maextro V800 brake pedals to snap under braking from 100 km/h to 0, indicating a repeatable design flaw at specific stress points.
• The brake failure was observed when a force around 1612 Newtons was applied, triggering sudden pedal collapse and potential safety risk.
• Zeekr 009 performed a workaround by using the P gear deceleration feature, showing there are alternative safety measures if brake pedals fail.
• Huawei responded by saying their cars meet three national standards and will provide free upgrades to improve safety margins, signaling a defensive posture.
• Dongchedi argued that their tests used industry standard benchmarking for braking distance and stop time, not an extreme or non-standard scenario.
• Huawei’s cited standards were scrutinized for possible concept-swapping, suggesting that 500 Newtons in one standard may refer to an accessibility threshold rather than structural resistance.
• The public discourse intensified when the 19-minute video from Dongchedi was reportedly taken down, leading to questions about PR and information control.
• Market impact included JAC Motors’ stock hitting daily limit down, illustrating how technical findings can affect investor sentiment in automaker shares.

Questions & Answers

Q: A real search query question about the video (e.g. 'How to...', 'What is...', 'Why does...', 'When should...'). Question 1

The Maextro V800 brake pedals snapped in multiple tests, with the first test showing a pedal sinking to the floor and piercing the firewall during a 100 km/h to 0 stop. The three cars tested by Dongchedi all exhibited identical breakage locations and similar debris, indicating a possibly systemic design issue rather than a one-off fault.

Q: Question 2

Dongchedi conducted three braking tests from 100 km/h to 0, and in the third run the pedal collapsed, followed by renewed failures in subsequent tests. The tests were performed on different cars from the same batch to verify repeatability, suggesting a recurring issue with the pedal assembly under calibrated conditions.

Q: Question 3

The recorded peak pedal forces were around 1612 Newtons and 1596 Newtons in the tests, which exceeded normal soft-press expectations but were within the course of the experiment. These values were reported during the tests and used to analyze whether the pedal design could withstand emergency braking loads.

Q: Question 4

Huawei claimed that the Maextro M9 and related models meet three national standards and that any real-world drivers had not reported brake pedal failures. They stated they would upgrade safety margins and offer free upgrades to affected vehicles as a corrective measure.

Q: Question 5

Dongchedi argued that the standard tests used to evaluate braking are industry benchmarks, not extreme or non-standard tests, and that the 100 km/h to 0 braking test is a legitimate measure of braking performance across brands.

Q: Question 6

There was controversy over the numerical references of 500 Newtons, 1500 Newtons and 2000 Newtons in Huawei’s standards, with commentators suggesting the 500 Newton guideline is about accessibility rather than structural pedal resistance, indicating a potential misinterpretation of standard definitions.

Q: Question 7

The 19 minute Dongchedi video was reportedly taken down the night of the release, prompting speculation about public relations pressure or platform moderation, and raising questions about information control in the unfolding story.

Q: Question 8

The public discussion extended to the safety implications for luxury MPVs, the role of standard tests in consumer protection, and the response strategies of manufacturers when a flagship model faces a strong performance critique, reflecting broader concerns about reliability and trust in high-end vehicles.

Summary & Key Takeaways

• Huawei Maextro V800 brake pedal failures were demonstrated in a 19 minute video, showing multiple pedals snapping under braking tests.

• Huawei issued a statement claiming national standard compliance and promised free upgrades while Dongchedi defended their test as standard braking benchmarks.

• The situation caused market reactions including JAC stock limits and heated public discussion about safety and standards.