Regarding Procedural Irregularity by Daihatsu Motor Co., Ltd. in Approval Application for Side Collision Tests

Apr. 28, 2023
Daihatsu Motor Co., Ltd.

Daihatsu Motor Co., Ltd. (Daihatsu) has confirmed that it has committed procedural irregularity in approval application for side collision tests for vehicles (4 models) developed by Daihatsu destined for overseas markets.
We deeply apologize for betraying the trust of our customers and other stakeholders and for causing great inconvenience and concern.


Regarding the procedural irregularity that was reported internally in April this year, we conducted the following investigation and confirmed that it took place as reported.
(1) Interview survey of the department in charge and related departments suspected of committing procedural irregularity
(2) Vehicle inspection
(3) Development history such as design change history and test results in the development process

2.Overview of confirmation

Daihatsu has confirmed that in the side collision tests of the following vehicles, the inside lining of the front seat door was improperly modified, and that there was a violation of the side collision test procedures and methods stipulated by regulations.

Subject vehicle models

Roles of Toyota and Daihatsu with regard to subject vehicles

Daihatsu carries out the entire process from development through to passing the necessary certification tests based on the OEM supply agreement and joint development agreement between Toyota Motor Corporation (Toyota) and Daihatsu.
Toyota then applies for approval of the vehicle type from authorities, and after receiving the necessary approval, sells them under the Toyota brand.

3.The company’s actions and impact on subject vehicles

The procedural irregularity was promptly reported to and consulted with the inspection and certification authorities after it was discovered, and shipments were suspended in the countries in which approval had been granted after discussions with Toyota.
In addition, while reporting to and consulting with the inspection and certification authorities, we have confirmed and reported that it conforms to laws and regulations in in-house re-tests using proper parts.
In the future, we will re-test in the presence of inspection and certification authorities, and if it is confirmed that the side impact performance complies with regulations, we will resume shipment.

4.For customers

We will strive to resume shipments of vehicles for which shipments will be suspended, while receiving guidance from the inspection and certification authorities. At this time, there is no need for customers using these models to take any action for continued use.

5.To prevent recurrence

In addition to the internal investigative committee that has conducted investigations so far, we will establish an independent third-party committee to elucidate the details of this matter, analyze the root cause, and compile measures to prevent recurrence accordingly.
We will inform you again after the report from the third-party committee.