In September 2012, fuel in Slovenia averaged €1.576 for petrol

Petrol, monthly average€1.576/L
Diesel, monthly average€1.444/L
LPG, monthly average€0.831/L
Weekly bulletins held for September 20124

Monthly averages for Slovenia across September 2012, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).