In September 2020, fuel in Czechia averaged €1.018 for petrol

Petrol, monthly average€1.018/L
Diesel, monthly average€0.996/L
LPG, monthly average€0.451/L
Weekly bulletins held for September 20204

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