Vauxhall Chief Executive Carlos Tabares said investments would be made in the plant if there were further commitments for electric vehicles. There has been concern the plant is set to close despite around 1,000 people relying on the centre for jobs.
Mr Tavares said: “We were preparing a new investment, we were clear what we wanted to do and at precisely that moment the 2030 ban was announced.
“That immediately suspended the decision.
“We are not going to invest in UK product [with conventional engines] when there is a ban from 2030.”
The Government has said it is “absolutely committed” to securing a manufacturing future at the Ellesmere plant.
Coventry City Council also intends to secure planning permission for a gigafactory to be built near the city airport.
John Cooper, the Unite conveyor at the Ellesmere Plant said the long term future was “essential” to the economy in the North West of England.
He said: “Unite will fight any attempt to close the car plant with everything at its disposal.
“The long-term future of the Vauxhall plant is essential to the success of the entire North West economy.
“Up to 7,000 workers in the supply chain rely on the plant for their livelihoods.
“It would be entirely unforgivable if the government failed to provide every possible assistance and support in securing the future of this critical plant.”