The truck maker had previously admitted in March that it had submitted fraudulent emissions and fuel economy data to transport authorities since at least 2016, suspending the shipment of vehicles with engines for which the figures had been altered.
ino Motors, Toyota Motor Corp.'s truck-making subsidiary, falsified emissions data as far back as 2003, findings from a third-party inquiry commissioned by it showed Tuesday.
The truck maker had previously admitted in March that it had submitted fraudulent emissions and fuel economy data to transport authorities since at least 2016, suspending the shipment of vehicles with engines for which the figures had been altered.
The company submitted the third-party report to the Ministry of Land, Infrastructure, Transport and Tourism on Tuesday, with President Satoshi Ogiso apologizing then, "We are sorry for causing trouble and worrying many people."
The transport ministry, together with the Economy, Trade and Industry Ministry and the Environment Ministry, ordered Hino Motors to find out what really happened and give explanations to customers and the public, as well as come up with preventive measures.
The ministries also said there were more cases of data fraud involving engines for trucks, buses and construction machines, in addition to those reported in March.
During certification exams, the truck maker replaced exhaust equipment with new ones and changed settings for fuel efficiency tests to generate readings better than the actual data, according to the previous probe.
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