Based on UK government, industry, and motoring organization reports, E5 petrol (the "super" grade 97+ octane) does not currently have a fixed, officially announced end-of-sale date, but it is under review to potentially cease or be reduced further in 2026.
Initial 5-Year Plan: When E10 became the standard 95-octane petrol on September 1, 2021, the government mandated that E5 remain available as a "protection grade" (specifically in 97+ octane super unleaded) for older vehicles. This protection grade was guaranteed for at least 5 years, making the initial review period September 2026.
Likely Future: While some reports suggest a potential ban or phase-out of E5 starting in 2026, it is considered highly likely that a version of it will remain available for longer to support classic and older vehicles, though it may become more expensive or harder to find in rural areas.
While there are no immediate, finalized plans to roll out E15 petrol (15% ethanol) across the UK, it is currently under review by the government. Following the adoption of E10 as the standard grade in 2021, moving to E15 is considered a potential next step to meet long-term decarbonisation goals.
Here are the key points regarding the potential introduction of E15 in the UK:
Official Review: The Department for Transport (DfT) confirmed in June 2025 that a move to E15 is being reviewed.
Industry Support: There is lobbying from within the industry to increase the ethanol blend limit to E15 or even E20 to boost demand for lower-carbon fuels, particularly as biofuel manufacturers look for stronger market support.
Compatibility Concerns: While most vehicles built after 2011 can run on E10, a shift to E15 (15% ethanol) raises questions about the compatibility of a wider range of older vehicles, potential damage to fuel system components, and the need for new public information campaigns.
Environmental Goals: The UK aims to cut carbon emissions by 78% by 2035, and increasing renewable fuel blends is part of this strategy.
While E15 is common in parts of the USA, the UK is currently focusing on embedding the use of E10, which already reduced CO2 emissions from transport.
So it will be interesting to see how long E5 will continue to be available
Personally, I alternate between E5 and E10, but will bear in mind when filling up before the next MOT to use E5 whilst it is still available.
Last edited by JohnHarris; 11/02/26 11:33 PM.
