Brazil's Federal Prosecutor Seeks to Halt 32% Ethanol Gasoline Mix

The Federal Public Ministry (MPF) filed a civil public action in Minas Gerais demanding a preliminary injunction to suspend the mandatory increase of anhydrous ethanol in gasoline from 30% to 32% (E32). The MPF argues that the National Energy Policy Council (CNPE) approved the change using studies conducted for the previous 30% blend, without specific technical assessments of vehicle durability, emissions, fuel system compatibility or long‑term corrosion risks. The prosecutor also seeks R$ 500 million in collective moral damages and calls for an independent technical audit and a stricter protocol for future fuel‑composition changes.

The government, represented by the Ministry of Mines and Energy, defends the measure, citing “robust empirical evidence” and an expected 0.03 real reduction in gasoline price per litre. Industry bodies such as UNICA and the National Association of Vehicle Manufacturers (Anfavea) have submitted opposite positions: UNICA stresses that extensive tests by the Institute Mauá of Technology showed no relevant impact on vehicles, while Anfavea warns of possible corrosion, premature wear of pumps and injection‑system failures, especially in older or imported models. The legal dispute is expected to be evaluated by the courts while the E32 blend remains in effect for an initial 180 days, renewable for a further period.