In June 2019, fuel in Slovakia averaged €1.324 for petrol

Petrol, monthly average€1.324/L
Diesel, monthly average€1.194/L
LPG, monthly average€0.616/L
Weekly bulletins held for June 20194

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