In February 2018, fuel in Belgium averaged €1.374 for petrol

Petrol, monthly average€1.374/L
Diesel, monthly average€1.340/L
LPG, monthly average€0.494/L
Weekly bulletins held for February 20184

Monthly averages for Belgium across February 2018, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).