In March 2018, fuel in Portugal averaged €1.491 for petrol

Petrol, monthly average€1.491/L
Diesel, monthly average€1.275/L
LPG, monthly average€0.616/L
Weekly bulletins held for March 20184

Monthly averages for Portugal across March 2018, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).