The cut to excise duty on petrol and diesel has been "immediately eroded" with fuels costs higher on Thursday than earlier in the week, the Dail has been told.
Sinn Fein TD Pearse Doherty said that many filling stations are charging over €2 per litre and accused some fuel stations of "engaging in price gouging at a time of crisis".
The Government introduced a cut of 20 cent per litre on petrol and 15 cent per litre of diesel, which took effect from midnight on Thursday.