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Suzuki CEO and chairman, Osamu Suzuki will officially step down from his role as CEO of the Japanese carmaker. However, he will continue to serve on as the company’s chairman, according to a report by Automotive News Europe.

The announcement comes following the Japanese carmaker’s admission to using improper fuel economy testing methods recently. In an unrelated matter, Suzuki’s executive vice president, Osamu Honda, announced that he will retire from his role.

Last month, Suzuki stated that it was not deliberately manipulating data, saying it was an unintentional mistake instead. Instead of submitting measured data of its cars through the coasting test, the company had submitted a build-up of measured data of individual components during rolling resistance and air resistance tests in the wind tunnel.

According to the company, 16 domestic models (available in Japan only) currently on sale are affected. The 16 cars include the Suzuki Alto, Alto Lapin, Wagon R, Hustler, Spacia, Every, Carry, Jimny, Solio, Ignis, Baleno, SX4 S-Cross, Swift, Escudo 2.4, Escudo and the Jimny Sierra.