In August 2017, fuel in Luxembourg averaged €1.139 for petrol

Petrol, monthly average€1.139/L
Diesel, monthly average€0.968/L
LPG, monthly average€0.467/L
Weekly bulletins held for August 20174

Monthly averages for Luxembourg across August 2017, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).