In May 2008, fuel in Portugal averaged €1.474 for petrol

Petrol, monthly average€1.474/L
Diesel, monthly average€1.393/L
LPG, monthly average€0.676/L
Weekly bulletins held for May 20084

Monthly averages for Portugal across May 2008, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).