VW has rejected a judge's plea to settle a mass lawsuit in Germany over the diesel emissions scandal.
A lawsuit involving about 450,000 owners of diesel Volkswagen cars began on Monday.
"The vehicles are driven by hundreds of thousands of customers every day, which is why we believe there is no damage and therefore no cause for complaint," the German carmaker said.
The scandal has already cost VW €30bn (£26.6bn) worldwide.
While the company settled in the US, where emissions rules are stricter, it is resisting settling with its domestic customers.
This is the first time Germans could pursue group claims since the law was changed last year.
This trial will settle points of law and the claimants will later be able to file follow-up claims for compensation if they are successful.
The trial, at Braunschweig Higher Regional Court, about 20 miles from VW's Wolfsburg head office, is likely to last years, however.
While settling was unlikely to be a quick solution, the court would support such an effort, judge Michael Neef said.
Part of VW's settlements so far include a deal to buy back 500,000 cars in the US, where it has agreed to pay more than $25bn (£20bn).
In Australia the company will pay 127 million Australian dollars (£70m) to compensate owners, paying them A$1,400 apiece.
Last week it emerged that three current and former Volkswagen executives were charged with market manipulation in connection with the diesel emissions scandal.
Chief executive Herbert Diess, chairman Hans Dieter Pötsch and ex-boss Martin Winterkorn, did not inform investors early enough about the financial fallout, German prosecutors allege.
In 2015, the firm admitted using illegal software to cheat on emissions tests. VW said it was confident those allegations would prove groundless.
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