In October 2021, fuel in Belgium averaged €1.629 for petrol

Petrol, monthly average€1.629/L
Diesel, monthly average€1.642/L
LPG, monthly average€0.832/L
Weekly bulletins held for October 20214

Monthly averages for Belgium across October 2021, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).