The Japanese automotive industry is being rocked by an emissions and fuel efficiency scandal right now, and it involves the Yamaha Motor Company motorcycle division as well.
All told, five of the eight automotive companies in Japan have been found incorrectly testing and reporting the emissions and fuel mileage of their vehicles.
The scandal started in 2016 with Mitsubishi, which lead to findings last year where Nissan and Subaru were found manipulating the results of their emission results. These findings then caused the Japanese government to require other automotive companies in Japan to check their testing operations.
Upon this internal review, Mazda and Suzuki found and reported that their cars had been improperly tested, with Yamaha finding similar results with its motorcycle standards testing.