Toyota said Kobe aluminum was used in hoods, doors, and other outer parts of vehicles. They are working to identify which ones.
Nissan was checking on which of its models may be impacted, but metal could have been used in their hoods.
Honda also used some of Kobe's metals in their hoods and doors.
Mitsubishi and Suzuki were checking to see.
Falsified strength metal may also have been used in trains in the U.K., planes in Japan (as well as Boeing), and a rocket recently launched in Japan to deliver a satellite, according to Bloomberg.
Kobe says it found out about the falsified inspection on products that were shipped out from September 2016 to August 2017. In a release, the company said there had not been any reports of safety issues connected with those metals. No recalls were immediately ordered.