In January 2016, fuel in Slovenia averaged €1.159 for petrol

Petrol, monthly average€1.159/L
Diesel, monthly average€0.988/L
LPG, monthly average€0.583/L
Weekly bulletins held for January 20164

Monthly averages for Slovenia across January 2016, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).