In April 2020, fuel in Bulgaria averaged €0.868 for petrol

Petrol, monthly average€0.868/L
Diesel, monthly average€0.865/L
LPG, monthly average€0.427/L
Weekly bulletins held for April 20203

Monthly averages for Bulgaria across April 2020, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).