In September 2017, fuel in Slovakia averaged €1.292 for petrol

Petrol, monthly average€1.292/L
Diesel, monthly average€1.120/L
LPG, monthly average€0.585/L
Weekly bulletins held for September 20174

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