Alphabet unit Google's refusal to allow an e-mobility app developed by Enel access to its Android Auto platform can be considered an abuse of its market power, Europe's top court said on Tuesday as it sided with Italy's antitrust authority.

The ECJ classifies Google's refusal to grant third parties access to Android Auto as potentially abusive. The system must be interoperable.

Europe's top court on Tuesday sided with Italy's antitrust authority which fined Alphabet unit Google four years ago for refusing to allow an e-mobility app developed by Enel access to its Android Auto platform.

Judges in the EU’s Court of Justice have said that Google’s refusal to let Enel host an electric-vehicle charging app on its Android Auto platform might break EU competition rules.