What E5 is
E5 is the higher octane petrol — usually sold as super unleaded, typically 97 or 99 octane — containing up to 5 per cent bioethanol. It costs more per litre than E10 at essentially every forecourt that sells both.
Why it is still on sale
When standard petrol moved to E10, E5 was kept available as the protection grade for vehicles that cannot use E10. GOV.UK states that E5 “will remain available at filling stations that sell 2 grades of petrol”. Source: GOV.UK, “E10 petrol explained”.
Who needs it
Owners of older petrol vehicles, classics, some motorcycles and some small engines. If you are not sure, the Department for Transport’s E10 vehicle checker answers it — see GOV.UK, “E10 petrol explained”.
Is it worth buying if my car takes E10?
That is a question about your engine and your driving, not about price data, and we are not going to pretend our figures settle it. What our figures can tell you is exactly what the two grades cost at the forecourts near you, so you can put a number on the difference before you decide.
How it appears in the data
The Fuel Finder scheme reports this fuel with the code E5. In the data behind this site, 0 of 8,077 forecourts report a price for it.
No forecourt in the file we hold reported a price for this fuel. That is a statement about the data, not about the fuel.