In September 2019, fuel in Bulgaria averaged €1.109 for petrol

Petrol, monthly average€1.109/L
Diesel, monthly average€1.114/L
LPG, monthly average€0.444/L
Weekly bulletins held for September 20195

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