A new Reuters report says Honda Motor is cutting production by up to 30 percent.
Logistical problems and supply chain snags are forcing the automaker to scale back operations in Japan.
The company is reducing output on two lines in western Japan by 10 percent this month, increasing cuts to nearly 30 percent in August.
Another assembly plant north of Tokyo will start making cuts next month.
Honda previously adjusted production goals in May, but had hoped to return to normal by June.