German Finance Minister Wolfgang Schaeuble on Saturday mooted the possibility of an additional EU-wide petrol tax to cover the increasing cost of migration to Europe.
"We have to secure the external borders of the Schengen zone. We mustn't fail to solve these problems because of limited funds," the conservative politician told daily Sueddeutsche Zeitung.
Schaeuble's proposals come in the wake of a EU finance ministers' meeting in Brussels, which failed to come up with a feasible plan to pay for the cost of migration.
"I suggested we could raise a tax on each litre of petrol if there aren't sufficient funds in national budgets or in the European budget," Schaeuble said without a naming a figure.
However, the finance minister's proposals have been met with opposition in his home country.
The vice chairwoman of Schaeuble's Christian Democrat party, Julia Kloeckner, rejected the proposal as did the leader of left-wing party Die Linke, Sahra Wagenknecht.
Various drivers' clubs also voiced their opposition, arguing the current low petrol prices did not justify such a policy.