Transport minister Keiichi Ishii said Tuesday that Nissan Motor Co. dealt inappropriately with his ministry's inspection in September where it was first discovered the automaker had been using unauthorized workers to conduct final car tests.
Ishii did not elaborate on the transgression, only saying it could still impact future issues surrounding the situation.
According to sources close to the matter, Nissan provided the ministry with an inaccurate explanation about its final car tests.