Recent developments

Uruguay’s current diesel specifications are defined in the Energy and Water Services Regulatory Unit (URSEA) Regulation of Technical Specifications for the Quality of Liquid Fuels (RETCCL). There are two automotive diesel grades, based on sulfur content: Diesel S50 (50 milligrams per kilogram (mg/kg)) and Diesel S10 (10 mg/kg).

The last time these diesel quality specifications were modified was on June 26, 2024, when, through URSEA Resolution No. 379/024, dispositions and/or modifications were introduced to the limits of the cetane number, polycyclic aromatic hydrocarbons (PAHs), and acid number parameters, to align the specifications of Diesel S10 with European standards, specifically EN 590:2022 Automotive fuels. Diesel.

Uruguay’s Euro 5 exhaust emission standards apply