Shares in Japanese automaker Mitsubishi Motors tumbled 15% after the company said it had improperly handled fuel efficiency tests.
Mitsubishi said its president, Tetsuro Aikawa, would hold a news conference on the subject later Wednesday.
Company spokesperson Tetsuji Inoue declined to comment further on the matter.
Mitsubishi’s announcement follows a huge scandal that rocked German auto giant Volkswagen last year after it admitted rigging diesel engine emissions tests in America and Europe.
Volkswagen fitted millions of vehicles with software that could cheat nitrogen oxide emissions tests.
The scandal resulted in massive recalls, lawsuits and the resignations of top executives, including CEO Martin Winterkorn.
— Yoko Wakatsuki contributed to this report.