Vauxhall's plants in the UK will remain open following the company's sale, according to the government's business secretary Lord Mandelson.
Parent company GM is expected to reveal its preferred bidder for Vauxhall and Opel imminently, as it prepares to sell them off.
Late on Wednesday night Lord Mandelson, the business secretary, revealed to the Guardian newspaper that he had secured assurances from the three main bidders for General Motors Europe that Vauxhall car production would "continue indefinitely" in the UK.
There are three frontrunners to buy Vauxhall and Opel: Fiat, Canadian parts maker Magna and Belgian private equity firm RJH. Beijing Automotive Industry Corporation (BAIC) has also made a bid for the company. Unconfirmed reports suggest Fiat's bid is the least likely of the three front-running options to be accepted.
"They have each assured me that Vauxhall provides a vital source of production and vital market share for GM Europe and see Vauxhall production in the UK continuing indefinitely," Mandelson said.