UK Renewable Fuel Use in 2025: What It Means for Your Running Costs

The UK government has published its latest figures on renewable transport fuel supply, covering the full calendar year from January to December 2025, and the data offers a clear picture of how the country's fuel mix is shifting and what that means for ordinary drivers.

The Department for Transport releases these figures under the Renewable Transport Fuel Obligation, a scheme that requires fuel suppliers to blend a set proportion of renewable fuel into the petrol and diesel they sell. In practical terms, this means that when you fill up at a forecourt, a portion of what goes into your tank is already coming from renewable sources such as used cooking oil or crop-based feedstocks, whether you realise it or not. The obligation has been gradually tightened over the years, which is one reason fuel blends have been quietly changing.

For cost-conscious drivers, the connection to what you pay matters. The cost of sourcing and blending renewable fuels is factored into wholesale fuel prices, so shifts in how much renewable content suppliers are required to provide can nudge forecourt prices up or down over time. Understanding that your fuel bill is partly shaped by this policy helps explain why pump prices do not move in simple lockstep with crude oil alone. Keeping an eye on fuel price trends, and comparing costs before you fill up, remains one of the most straightforward ways to trim your weekly spend.

The figures also have a bearing on drivers considering a switch to higher-blend fuels, such as E10 petrol, which contains up to ten per cent ethanol, or HVO diesel, which is made almost entirely from renewable feedstocks and is increasingly available at selected sites. If you drive an older vehicle that is not compatible with E10, it is worth checking whether your car qualifies before filling up, as using the wrong grade could lead to repair bills that quickly wipe out any saving at the pump. Compatibility information is available through official government guidance.

If you are thinking about how your choice of car, fuel type or driving habits affects what you spend year-round, it is worth looking at the full picture of vehicle running costs before making any decisions. Comparing what different models genuinely cost to own and run, including fuel, tax, insurance and servicing, can reveal savings that are easy to miss. Resources such as Car.co.uk can help you get a clearer sense of what a vehicle will actually cost you beyond the forecourt.