Mazda Motor, Yamaha Motor, and Suzuki Motor have all admitted to using falsified emissions data to inspect their new vehicles. The news is the result of internal investigations at all three organizations ordered by the Japanese ministry of transportation.
“The inspection of exhaust emissions and fuel efficiency are important processes to guarantee environmental performance related to carbon dioxide and harmful gasses. It is extremely regrettable that the process was done inappropriately," Keiichi Ishii, the minister of land, infrastructure, transport and tourism, in a press statement.
Of the three, Suzuki was found to be the biggest violator. When inspectors reviewed the tests at all three carmakers, Suzuki's improper testing appeared to go as far back as 2012. Out of 12,819 cars sampled for fuel economy and emissions since June 2012, said Japan's fourth-largest car manufacturer, around half had been inspected improperly. 30 car models, some of which are no longer in production, were subject to the investigation.
The company maintains that there are no problems with their cars' actual emissions release, and therefore no recalls will need to be issued.
“I deeply apologize and will lead efforts to prevent a recurrence,” President Toshihiro Suzuki a press conference.
Mazda was found to have improperly tested 72 cars dating back to November 2014, Yamaha was found to have 7 from January 2016.
Kiyotaka Shobuda, Mazda's senior managing executive officer, told reporters that Mazda's actions were not deliberate and the improper inspections had not affected the quality of their cars. "The company takes the incident seriously, and will make sure to prevent the improper inspections from happening again," Shobuda in a statement.
"Regarding the emissions inspections... it is a fact that there were improper actions," a Yamaha spokesman said in a . "We sincerely apologize."
The investigations were prompted by similar findings of improper testing at Subaru Corp. and Nissan Motor Co., and before that from the Volkswagen diesel emissions scandal of 2015, where 11 million cars were found to be cheating emissions standards.
That scandal emerging into a examination which showed that 4,000 European vehicle models were exceeding nitrogen oxide levels set by the European Union. Nearly all European cars were dirty in some respect, the study found. Japanese cars now have a section of the scandal all their own.