In September 2020, fuel in Netherlands averaged €1.561 for petrol

Petrol, monthly average€1.561/L
Diesel, monthly average€1.159/L
LPG, monthly average€0.581/L
Weekly bulletins held for September 20204

Monthly averages for Netherlands across September 2020, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).