In May 2016, fuel in Belgium averaged €1.329 for petrol

Petrol, monthly average€1.329/L
Diesel, monthly average€1.128/L
LPG, monthly average€0.404/L
Weekly bulletins held for May 20165

Monthly averages for Belgium across May 2016, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).