In September 2014, fuel in Belgium averaged €1.537 for petrol

Petrol, monthly average€1.537/L
Diesel, monthly average€1.340/L
LPG, monthly average€0.615/L
Weekly bulletins held for September 20145

Monthly averages for Belgium across September 2014, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).