In September 2018, fuel in Netherlands averaged €1.677 for petrol

Petrol, monthly average€1.677/L
Diesel, monthly average€1.379/L
LPG, monthly average€0.726/L
Weekly bulletins held for September 20184

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