In January VW promised the owners concerned a fair and generous compensation. But Jens-Peter Gieschen, an attorney from Harpsted, alleges that no compensation has been received so far.
"I am acting on behalf of 17 clients," said Gieschen, who claims VW offered free servicing for 10 years and to refund repair costs.
Gieschen said his clients have had repair costs of up to 2,200 euros.
"There is a health risk when oil leaks onto a motorway or an engine blows up while driving. According to the law this should result in the manufacturer withdrawing the product," Gieschen said.
VW responded by saying: " We will provide the service our customers are entitled to but we reject demands which are unreasonable.''