In July 2018, fuel in France averaged €1.525 for petrol

Petrol, monthly average€1.525/L
Diesel, monthly average€1.434/L
LPG, monthly average€0.824/L
Weekly bulletins held for July 20185

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