Revenue officers seized almost 700 litres of wine in two separate operations at Rosslare Europort today.
Officers seized more than 600 litres of wine when they stopped and searched a car that had got off a ferry from Roscoff in France.
An Irish man in his 60s was questioned.
In a second operation, officers seized 90 litres of wine when they stopped and searched another car that had disembarked from the same ferry. A man in his 50s was questioned.
The seizures have a total retail value of around €10,000 and a potential loss to the Exchequer of almost €5,000.
Investigations in relation to both seizures are ongoing.