In January 2006, fuel in Belgium averaged €1.284 for petrol

Petrol, monthly average€1.284/L
Diesel, monthly average€1.027/L
LPG, monthly average€0.541/L
Weekly bulletins held for January 20064

Monthly averages for Belgium across January 2006, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).