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"We need to take an aggressive approach to deal with changing regulations," Toshiyuki Mizushima, president of Toyota's powertrain division, told reporters at a briefing.

Toyota said it would expand personnel on its hybrid technology development team by 30 percent through 2021, by which time it aims to introduce 19 new lower-emission powertrain components made on its recently introduced common manufacturing platform.

By 2021, at least 60 percent of Toyota vehicles sold in Japan, the United States, Europe and China will feature new components which will reduce carbon dioxide emissions by 15 percent or more compared with the average amount of emissions of vehicles sold in 2015, the automaker said.