FAME
Published 8 November 2026, 22:44
FAME — éster metílico de ácidos gordos, fatty acid methyl esters (biodiesel)
Fuel made from vegetable oil that is blended into ordinary diesel. The law limits its share in road diesel: until 1 October 2026 the ceiling was 7% by volume, and from that day it is 10% (Decreto-Lei n.º 188/2026). The share is shown by the label on the pump: B7 means up to 7%, B10 up to 10%. Suppliers must also keep diesel with no more than 7% on sale, as some vehicles are not designed for 10%.
Where you come across it. The sticker on the fuel pump, the car's handbook, fuel information on the retailer's website.
What your engine can take is stated by the car manufacturer, not the filling station. If the handbook lists only B7, look for a pump with that label.
Official website: data.dre.pt/eli/dec-lei/188/2026/09/21/p/dre