Ford Europe has called union leaders from the Bridgend engine plant to its Essex headquarters on Thursday.
There are renewed concerns for the factory’s future – it opened nearly 40 years ago and employs 1,700 workers.
It comes just five months after the company announced that it was cutting its Welsh workforce by 1,000, with 370 going in a first phase.
Investment in the new Dragon engine was scaled back while production of an engine for JLR is due to end this year.
There has already been concern about whether the plant would be viable making only 125,000 Dragon petrol engines.
The meeting comes just days after car sales in the UK fell again. and the BBC expects Ford will be in touch with Welsh Government ministers first thing in the morning.
It is understood the meeting has been called in the last 24 hours and senior managers from Ford in the United States will be present, as well as union leaders from Ford’s other UK sites.
2008: Ford announces it will operate as a single global company – meaning its Bridgend engine plant had to compete with the firm’s other factories across the world, not just in Europe
2015: Bridgend secures investment for Dragon petrol engine project – with 250,000 engines a year, although it has capacity for 750,000 a year
2016: The planned Dragon investment is reduced to £121m and the number of engines is cut in half to 125,000
2017: Ford projects a reduction of 1,160 workers by 2021 and confirms production of Jaguar Land Rover engines – which involves half the workforce – will end in 2020
2018: Workers making Jaguar engines face a five-day shutdown as a knock-on effect from JLR’s temporary production halt. Ford’s European boss warns a no-deal Brexit would be a “pretty disastrous”
2019: Ford plans to cut 370 jobs the first phase of redundancies which will total 990 by 2021. The Dragon project is scheduled to employ about 500