Yamaha Motor in spotlight as transport ministry inspection begins

Government officials are conducting an on-site inspection at the head office of Yamaha Motor in central Japan.

The move follows revelations earlier this week that the motorbike manufacturer and four other Japanese vehicle makers, including Toyota Motor, falsified performance tests to obtain certifications for their products.

Transport ministry inspectors entered Yamaha headquarters in Shizuoka Prefecture on Wednesday.

They are checking test-data records and interviewing executives, as well as personnel in charge.

Yamaha has confirmed it improperly conducted noise testing on one type of motorcycle that's currently in production. The company has halted shipments of the model.

Irregularities were also found on two other motorbikes Yamaha used to produce.

The ministry began an on-site inspection at Toyota headquarters on Tuesday.