In September 2007, fuel in Belgium averaged €1.355 for petrol

Petrol, monthly average€1.355/L
Diesel, monthly average€1.080/L
LPG, monthly average€0.523/L
Weekly bulletins held for September 20074

Monthly averages for Belgium across September 2007, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).