Over two weeks have passed since Fiat was threatened with a sales ban in Germany after the country's transport authorities said they found defeat devices in Fiat models. The Kraftfahrt-Bundesamt (KBA), Germany's transport ministry, asked Fiat to appear before the ministry, but the Italian automaker refused to do so.

According to the KBA, Fiat's defeat device would switch itself off after the car has been running for 22 minutes. Fiat Chrysler Automobiles Inc. (FCA) officials have denied the accusations, saying, “all [its] vehicles are compliant with existing emissions rules.”

In response to KBA's claims, the Italian Transport Ministry told the German authorities to allow Italian regulators to address the issue first. The European Commission has been delegated to do more checks on the erring cars and take appropriate action if needed.

The Fiat models in question recently finished re-testing for emissions and Italy's Transport Minister Graziano Delrio said that the cars in question were indeed complying with emissions regulations. According to the Italian Transport Ministry, the cars showed full compliance with emissions procedures and the test was done while driving, without any misleading procedures. "There were no illegal devices found on diesel models by other carmakers except for those Volkswagen models already identified," said Delrio. German authorities have yet to re-test the Fiat models in question.