In September 2021, fuel in Germany averaged €1.633 for petrol

Petrol, monthly average€1.633/L
Diesel, monthly average€1.437/L
LPG, monthly average€0.745/L
Weekly bulletins held for September 20214

Monthly averages for Germany across September 2021, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).