Hundreds of UK owners of Volkswagen (VW) cars have registered their interest in taking part in group legal claims against the manufacturer, a law firm has said.
Slater and Gordon reported that it has been contacted by over 500 people who believe they were misled by VW in the wake of the emissions tests scandal.
The firm's head of group litigation, Jacqueline Young, said that if UK cars are found to have defeat devices then drivers and dealerships could make a claim for being given false information and having a devalued asset.
Law firm Leigh Day also said it was representing hundreds of VW drivers in the UK.
Its consumer goods expert, Bozena Michalowska-Howells, also criticised the manufacturer for its "woeful lack of clarity" over which cars and countries are affected.
Volvo withdrew an app comparing cars' emissions in 2011, after being told by that the data "could not be taken seriously".
Volkswagen's US boss has admitted he was told in spring last year of the emissions cheating affecting millions of the company's vehicles.
Volkswagen could start recalling cars containing emissions cheating software in January, according to the firm's new chief executive.