Japan’s car safety scandal deepens, as Toyota halts sale of 3 car models. Honda, Mazda, Yamaha and Suzuki also faked results

In total, the ministry identified 32 previously manufactured vehicles as being incorrectly certified. Officials will perform an on-site investigation of Toyota’s headquarters in Nagoya on Tuesday, the ministry said.

Toyota shares dropped as much as 2.4 per cent in Tokyo. Mazda shares fell more than 4 per cent, while Yamaha retreated as much as 2.1 per cent. Suzuki pared earlier gains.

The findings signal a deepening crisis of trust for Japan’s carmakers. Earlier this year, the transport ministry ordered almost 90 manufacturers to re-examine their testing procedures after decades of fraud were uncovered at a pair of Toyota affiliates.

In December, an internal probe of Daihatsu showed most of its vehicles had not been properly tested for collision safety. Toyota also suspended all engine shipments in January after an investigation revealed it had falsified power-output figures.

Of the 68 investigations already concluded, the ministry also found wrongdoings at four other manufacturers: Honda, Mazda, Yamaha and Suzuki. The ministry ordered the five carmakers to suspend shipments of all vehicles with faulty certifications.

The ministry’s investigation is ongoing and of the 17 companies still under investigation, Toyota is the only one where issues have been uncovered.