Quality Specifications
Spanish of January 31, 2006, which determines the specifications of gasoline, diesel, fuel oil and liquefied petroleum gases, and the use of certain biofuels, allows the sale of gasoline with a maximum ethanol content at 10% v/v.
The national standardization body has approved a standard, UNE EN 15293:2019, which allows the blending of up to 85% v/v ethanol in gasoline.
For more details about the standards’ specifications, please see the SGS INSPIRE fuel quality database.