EN590 is a European standard diesel fuel specification established by the European Committee for Standardization (CEN) under the designation EN 590. It defines the physical properties that all automotive diesel fuel must meet to ensure high performance, engine protection, environmental compliance, and compatibility with modern diesel engines.

EN590 diesel is primarily used in compression ignition engines (diesel engines) and has been developed to meet strict emission requirements and performance standards across Europe and other global markets. It supports Euro 5 and Euro 6 emission standards and is compatible with modern diesel engines equipped with DPF (Diesel Particulate Filters) and SCR (Selective Catalytic Reduction) systems.