Under Greek law, if a customer resident in Greece leases or rents a vehicle from a lessor established in another Member State, registration tax needs to be paid in Greece in full. Greece has failed to address the issue of cross-border leasing or renting of cars in its legislation, thereby disregarding European Court of Justice case-law on this matter (see C-451/99 Cura Anlagen and C-91/10 VAV Autovermietung) that requires Member States, in the case of cross-border leasing or rent, to levy a tax proportionate to the duration of the use of the vehicle. This may act as a deterrent to cross-border activity, going against the principles of free movement of services set down in the Treaties.