Mazda and Suzuki have submitted reports of their findings on their tests to the transport ministry and will publicise details on Thursday, the Nikkei said.

Representatives for Mazda and Suzuki told Reuters they had submitted reports to the ministry but declined further comment.

Mazda shares were down 1.4 percent and Suzuki down 3.4 percent in early trade, versus a 0.4 percent fall in the benchmark Nikkei <.N225>.

(Reporting by Maki Shiraki and Chris Gallagher; Editing by Stephen Coates)

Stocks treated in this article : Nikkei 225, Suzuki Motor Corp, Mazda Motor Corp