In May 2019, fuel in Germany averaged €1.539 for petrol

Petrol, monthly average€1.539/L
Diesel, monthly average€1.295/L
LPG, monthly average€0.620/L
Weekly bulletins held for May 20194

Monthly averages for Germany across May 2019, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).