UK fuel types explained
The letters and numbers on a UK pump are not marketing. They are the fuel’s specification, and they tell you what is actually in it: E for the ethanol in petrol, B for the biodiesel in diesel, and the number for the maximum percentage of it. E10 is petrol with up to 10 per cent ethanol; B7 is diesel with up to 7 per cent biodiesel.
Those same codes are what the Fuel Finder scheme uses, so they are what this site uses too — with the everyday name in front of them, because a driver looking for diesel does not search for “B7”.
The standard 95 octane petrol sold at almost every UK forecourt. Contains up to 10% bioethanol. Most petrol vehicles built since 2011 can use it — some older ones cannot.
0 of the 8,077 forecourts in the data we hold report a price for this fuel.
The higher octane petrol, containing up to 5% bioethanol. Kept on sale as the “protection grade” for vehicles that cannot run on E10.
0 of the 8,077 forecourts in the data we hold report a price for this fuel.
Ordinary forecourt diesel, containing up to 7% biodiesel (FAME). This is what the overwhelming majority of diesel vehicles in the UK are filled with.
0 of the 8,077 forecourts in the data we hold report a price for this fuel.
The same base diesel with a different additive package, sold under brand names at a higher price per litre.
0 of the 8,077 forecourts in the data we hold report a price for this fuel.
Diesel containing up to 10% biodiesel. Not a normal UK forecourt grade — vehicle compatibility has to be checked before use.
0 of the 8,077 forecourts in the data we hold report a price for this fuel.
A renewable diesel made by hydrotreating vegetable oils and waste fats. Not a FAME blend and not the same product as ordinary diesel.
0 of the 8,077 forecourts in the data we hold report a price for this fuel.
Counts are forecourts reporting a price for that fuel inside our sanity range (120p–300p a litre), as at 27 August 2026. The same basis is used on the fuel statistics page, so the two agree.