NEUTRAL DOSSIER · FACT ARCHIVE
Zunjie V800 Brake-Pedal Fracture Incident
According to media reports, on 8 October 2026 Dongchedi released a closed-course test video: three brand-new Zunjie V800 units suffered brake-pedal-bracket fractures during 100 km/h–0 emergency-braking tests.
1. Incident Summary
Source context (includes secondary reporting):[1] www.bjnews.com.cn[5] caifuhao.eastmoney.com
Reporting on 8 October 2026 described a Dongchedi closed-course test in which three new Zunjie V800 vehicles suffered brake-pedal-bracket fractures during consecutive emergency braking.
The attempt numbers and stopping distances in the data table are secondary accounts of the same test, rather than independently measured results.
Reporting also described JAC shares reaching the daily down-limit. The brand issued a statement that evening offering a free upgrade; that statement is distinct from a final independent investigation finding.
2. Key Timeline
Source context (includes secondary reporting):[1] www.bjnews.com.cn[2] www.ithome.com[3] www.ithome.com[4] finance.sina.cn[5] caifuhao.eastmoney.com
August 2026
Zunjie V800 launched
Price range RMB 766,000 – 1,016,000; positioned as a full-size luxury MPV; check brand disclosures for vehicle specifications.
2026-10-08
Dongchedi releases test video
Three brand-new V800 units on a closed course suffered brake-pedal-bracket fractures on the 3rd, 4th and 2nd full-power braking attempts respectively.
2026-10-08
Capital-market reaction
JAC Motors (600418.SH) hit the daily down-limit intraday, closing at RMB 24.72.
2026-10-08
Dongchedi statement
Said the 100 km/h brake test is not an extreme condition but one of the most basic items in vehicle testing; three fractures at the same position "indicate a certain safety hazard".
2026-10-08
Zunjie customer-service reply
Said no relevant information had been received and recommended following subsequent official notices.
2026-10-08
JAC Motors reply
Said the matter was "under attention"; investor-relations staff said "every unit goes through quality control before leaving the factory".
2026-10-08
Hongmeng Zhixing reply
Said no related report had been received; delivery schedules remain normal. Stores said Huawei will re-evaluate jointly with JAC and publish the data.
2026-10-08
Reviewer Chen Zhen
Posted a screenshot of braking force; explicitly said he would "not speculate".
2026-10-08
Weibo CEO Wang Gaofei
Said the core question is first "whether any accident has been caused by braking issues".
2026-10-08
Zunjie official supplementary reply
Said the braking system was developed and validated to exceed national/industry standards and offered a free upgrade for the pedal-bracket base.
3. Key Test Data
Source context (includes secondary reporting):[5] caifuhao.eastmoney.com
The data below come from the Dongchedi test video and multiple media reports citing the same source; QC/T 788-2018 is cited in reporting, but its full text and applicability have not been independently verified.
| Number of test vehicles | 3 |
|---|---|
| Vehicle condition | Brand-new, low mileage |
| Speed range | 100 km/h → 0 |
| Test environment | Closed course |
| Test type | Consecutive full-power braking endurance test |
| Car #1 fracture | On the 3rd full-power braking attempt |
| Car #2 fracture | On the 4th full-power braking attempt |
| Car #3 (re-verification) fracture | On the 2nd attempt; mileage < 3 km |
| Peak force stated by the tester | 1,612 N (attributed to Dongchedi; not independently measured) |
| Industry standard cited in reporting | QC/T 788-2018 (full text and applicability not independently verified) |
| Fracture location | Root of the brake-pedal bracket |
| Normal braking distance | ≈ 38 m |
| Stopping distance after pedal loss | ≈ 140 m |
| Price range | RMB 766,000 – 1,016,000 |
4. Teardown Observations
Source context (includes secondary reporting):[1] www.bjnews.com.cn[5] caifuhao.eastmoney.com
Citing Dongchedi’s teardown footage as reported by multiple outlets:
- Reporting describes fractures at the same bracket location in three tested vehicles.
- Secondary commentary distinguishes the support behind the pedal from discs and calipers.
- Original teardown records have not been obtained; these reports do not establish the structure, material or defect scope of all production vehicles.
5. Origin of the "Cuicuisha" Nickname
The viral label "脆脆鲨" (Cuicuisha, literally "crispy shark") is a homophonic play on "脆脆刹" (cuicui sha, "crispy brakes"), a sarcastic search term rather than a technical or product-quality determination.
The nickname carries strong emotional color and is not used by any official party. This page only describes its origin without taking a position.
6. Stakeholder Responses
Source context (includes secondary reporting):[1] www.bjnews.com.cn[2] www.ithome.com[4] finance.sina.cn[5] caifuhao.eastmoney.com
Below are the public statements reported as of 2026-10-10, grouped by party:
Dongchedi (tester)
- The 100 km/h brake test is not an extreme condition; it is one of the most basic items in vehicle testing.
- The fracture of the brake-pedal bracket was the first of its kind in their testing.
- Three similar fractures at the same position across three units "indicate a certain safety hazard".
- Denied rumors of "abusive testing".
JAC Motors (600418.SH, manufacturer)
- Initial reply: "We are paying attention to this."
- Subsequent reply: "We are investigating the Zunjie incident and conducting multiple rounds of testing; an official statement will be released once there is a result."
- Investor-relations staff: "Every unit goes through quality control before leaving the factory."
- On 8 October the stock hit the daily down-limit intraday, closing at RMB 24.72.
Zunjie (brand)
- Customer-service initial reply: no relevant information available; recommended following subsequent official notices.
- Official statement (10-08): the braking system was developed and validated above national/industry standards; a free upgrade will be offered for the pedal-bracket base.
Hongmeng Zhixing (sales/brand operation)
- Brand side: no related feedback received; vehicle delivery schedules remain normal.
- Store side: Huawei will jointly re-evaluate with JAC and publish the data.
- Store staff said their internal workgroup received continuous inquiries from prospective and existing owners throughout the day.
Reviewer Chen Zhen
- Posted a screenshot of braking force.
- Explicitly said he would "not speculate".
Weibo CEO Wang Gaofei
- Said the core question is first "whether any accident has been caused by braking issues".
7. Capital-Market Reaction
Source context (includes secondary reporting):[3] www.ithome.com
IT之家 reported that JAC shares hit the daily down-limit on 8 October. Prices have multiple drivers; this archive does not establish a single cause.
| Ticker | 600418.SH |
|---|---|
| Event date | 2026-10-08 |
| Intraday move | Hit daily down-limit |
| Closing price | RMB 24.72 |
| Trending keywords | Zunjie V800 brake-pedal bracket fracture / Zunjie V800 / Zunjie Dongchedi / JAC Motors down-limit |
No independently traceable daily price series is available here, so the reconstructed chart has been withdrawn. The table summarizes that day’s reported figures and is not investment advice.
8. About the Test Method
Source context (includes secondary reporting):[2] www.ithome.com
Reports refer to QC/T 788-2018 and compare static loading with consecutive vehicle braking. This archive has not independently checked the full standard, its scope or test conditions.
Without the full applicable standards, original test records and conformity-assessment materials, this page cannot independently determine compliance.
The tester describes the test as routine; the brand statement describes the conditions as non-standard and extreme. These are attributed positions, to be considered alongside full test conditions and investigation materials.
9. Frequently Asked Questions
Source context (includes secondary reporting):[2] www.ithome.com
Is this a common defect or an isolated case?
Does this violate applicable standards?
What should existing owners do?
Is Huawei or JAC responsible?
What is Cuicuisha?
Was the test an extreme condition?
Will there be a recall?
10. Sources
These links distinguish reporting, attributed statements and secondary commentary. Repeated coverage of one video is not independent testing. Original test records have not been obtained.