Vauxhall has ceased working with retained consumer and lobbying agencies Hill & Knowlton and GPC International and is understood to be meeting around eight firms as part of the review process.
The company's manager of business affairs, David Crundwell - who is overseeing the review - confirmed Vauxhall was in talks with agencies, but refused to be drawn on the details of the brief.
'Vauxhall is talking to a number of PR agencies to discuss what they can contribute to the business. We're looking at firms to support our in-house team but it is too early to say what that work will entail,' he said.
Sources close to the pitch suggest Vauxhall is looking to 'shift its image' following the launch of the new Vectra, and ahead of fresh marketing for the new Corsa later this year.
GPC is thought to be involved in the current agency review.
H&K spin-off PiranhaKid was hired by Ford earlier this year for work on its small car brands, having been put forward to avoid a conflict with H&K's work for Vauxhall (PRWeek, 15 March).
In March the final vehicle rolled off the production line of Vauxhall's Luton factory, which closed after 97 years with the loss of 1,900 jobs.
That decision was taken due to a drop in Vectra demand.