In September 2011, fuel in Portugal averaged €1.568 for petrol

Petrol, monthly average€1.568/L
Diesel, monthly average€1.376/L
LPG, monthly average€0.752/L
Weekly bulletins held for September 20114

Monthly averages for Portugal across September 2011, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).