On Thursday, an EU-based consumer group indicated that the “Dieselgate” scandal fix that Volkswagen was applying to the Audi Q5 did not reduce emissions.

According to the European Consumer Organisation (BEUC), tests conducted on the Audi Q5 by Italian consumer group Altroconsumo showed a 25 percent increase in nitrogen oxide (NOx) emissions after the technical fix was applied.

Monique Goyens, BEUC’s Director General, said in a statement that “VW’s solution to deactivate the defeat device is not reliable” and that “national public authorities must finally take action and put pressure on VW to correct their misbehavior.”

Volkswagen has maintained that the fix would make vehicles affected by the emissions scandal compliant with EU regulations, eliminating the need for owner compensation.