CNG was 51% cheaper compared to petrol and 50% compared to ethanol. The Paraná Gas Company (Compagas) is responsible for supplying natural gas to 39 refueling stations in the state.
Drivers using CNG have another benefit: 60% discount in the amount of the Automotive Property Tax. While gasoline and alcohol powered cars pay 2.5% additional to the vehicle price, those natural gas fueled vehicles pay only 1% more.
Source: Compagas.