In March 2013, fuel in Belgium averaged €1.568 for petrol

Petrol, monthly average€1.568/L
Diesel, monthly average€1.399/L
LPG, monthly average€0.681/L
Weekly bulletins held for March 20134

Monthly averages for Belgium across March 2013, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).