In March 2010, fuel in Belgium averaged €1.413 for petrol

Petrol, monthly average€1.413/L
Diesel, monthly average€1.116/L
LPG, monthly average€0.579/L
Weekly bulletins held for March 20105

Monthly averages for Belgium across March 2010, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).