Fiat Chrysler Automobiles NV has filed an appeal to the Court of Justice of the European Union on Dec. 4 to overturn the European Commission's order for the carmaker to pay €30 million in Luxembourg back taxes, Reuters reported Dec. 7, citing a company statement.

In 2015, the European competition regulator ruled that the Italian-American carmaker was granted selective tax advantages by Luxembourg, a decision that prompted the country to recoup between €20 million and €30 million from Fiat Chrysler.

Fiat Chrysler attempted to appeal the decision, but it was dismissed by the General Court of the European Union in September.

Most recently, the company confirmed to Reuters that it filed a new appeal.

"We confirm Fiat Chrysler Finance Europe SA lodged an appeal with the European Court of Justice against the General Court's judgment of Sept. 24 relating to FCFE's Luxembourg tax ruling," the company reportedly said.

The company would have to wait about 18 months for the court's decision, the report said.