Jaguar Land Rover is to halt production on some days at two of its West Midlands plants.
The changes include stopping production at their Solihull and Castle Bromwich factories on some half-days and full days.
The Solihull plant will see some production suspended, depending on the area of the business, between now and end March.
Meanwhile, the Castle Bromwich plant will also be halting production on some half and full days from the end of this month until the end of March.
For the 2019 calendar year, JLR sales were down by 5.9% compared to 2018.
Production stoppages have been put down to the challenges in the global market.
The slowdown in the Chinese market has been named as one of the company’s biggest challenges - along with declining demand for diesels and uncertainty over Brexit.
A spokeswoman from JLR said:
“Through its ongoing transformation programme, Jaguar Land Rover is taking action to optimise performance, enable sustainable growth and safeguard the long-term success of our business.
Trade union Unite declined to comment.