top of page

E10 or E5 Fuel - How will it affect you?

E10 unleaded petrol has replaced E5 as the standard petrol grade from 1st September 2021.

The Department for Transport in the UK has announced that E10 unleaded petrol will replace the current E5 as the standard petrol grade from September 2021. This doesn’t mean that filling stations will stop selling E5 completely, as approximately five percent of cars in the UK aren’t compatible with E10 according to

What is E10 fuel?

E10 is a biofuel used in transportation that contains 10 per cent renewable ethanol instead of the previous standard petrol grade – E5 or super grade petrol – which contains up to five per cent ethanol. Simply put, regular petrol containing 10 per cent of bioethanol is called E10 or ‘premium’ petrol. Ethanol is renewable, colourless alcohol which is made from agricultural sources such as sugar beets. The higher percentage of ethanol in E10 will help in reducing the amount of CO2 a vehicle produces as ethanol absorbs CO2 as it’s produced. Another benefit of ethanol-blended fuel is that ethanol can be sourced easily from processed corn which also helps businesses in the farming and manufacturing sector. E10 is widely used in various countries within Europe, such as Finland, France, Germany and Belgium, and outside Europe, including Australia. Related: Learn more about different fuel types, and which one is right for you

Your car’s compatibility with E10 fuel

While all cars manufactured after 2011 will be able to use E10 fuel, some cars manufactured before 2011 may not be compatible with E10, including some older cars, classic cars and cars using a carburettor. You can easily check whether your car’s compatible with E10 or not through an E10 compatibility checker on You can also check if your vehicle is compatible with E10 petrol by checking the user manual or asking the manufacturer. Filling stations will clearly label the petrol as E5 or E10 on both the petrol dispenser and nozzle, so make sure you select the right fuel for your car according to compatibility. We checked the top 10 most registered cars of 2021’s compatibility with E10 fuel: 1. Vauxhall Corsa (26,215 registrations) – Compatible 2. Ford Fiesta (23,521 registrations) – all Ford Fiestas after the third generation are compatible including Fiesta Mark IV, Mark V, Mark VII, Mark VIII and Fiesta ST 3. Volkswagen Golf (21,970 registrations) – All Golfs, excluding the following are compatible: • Golf Mk 4 - 1.6 litre (81kW) FSI made from November 2001 - May 2004 • Golf Mk 4 Estate - 1.6 litre (81kW) FSI made from October 2001 - October 2006 • Golf Mk 5 - 1.4 litre (66kW) FSI made from November 2003 - November 2004 • Golf Mk 5 - 1.6 litre (85kw) FSI made from August 2003 - May 2004 • Golf Mk 5 2.0 litre (110 kW) FSI made from January 2004 - May 2004 4. Mercedes-Benz A-Class (21,684 registrations) – Compatible 5. Ford Puma (20,853 registrations) – Compatible 6. Kia Sportage (18,941 registrations) - Compatible 7. Volkswagen Polo (18,6015 registrations) – All Polos except for 1.4 litre Polos manufactured between February 2002 to June 2006 are compatible 8. Toyota Yaris (18,125 registrations) – Compatible 9. Nissan Qashqai (17,812 registrations) – Compatible 10. BMW 3 Series (17,188 registrations) – Compatible (minimum octane required should be observed according to the car manual)

Benefits of using E10 petrol

• Lower level of CO2 emissions produced • Reduced reliance on fossil fuels • It’ll contribute towards the UK meeting its emissions target • Ethanol is non-toxic and renewable • Ethanol is easy to source • Ethanol production results in valuable by-products such as high protein animal feed and stored CO2 which can be used by various industries and can help reduce the need to import these products

E10 fuel price and quality

Once E10 is introduced as the standard petrol grade in the UK, it’s expected to be the cheaper petrol out of E10 and E5. E10’s cheaper price, however, doesn’t mean that it’s cheaper quality – it will simply see lower prices as it’ll be widely available across the country as the standard petrol. The Department for Transport’s impact assessment estimated the reduction in petrol costs to be by 0.2 pence per litre. However, a shift from E5 to E10 may increase the overall fuelling costs for petrol cars by 1.6 per cent as the energy content of E10 fuel is less than that of E5 which can slightly reduce your car’s fuel economy. The reduced fuel economy would increase the need to refuel and thus, motorists would end up buying more litres of fuel - this would slightly increase the total amount spent on refuelling overtime. Related: Fuel-efficient driving tips to reduce car emissions

Does E10 fuel damage your engine?

If your vehicle is listed as incompatible and you use E10 fuel instead of E5 you won’t require any immediate action like draining out the fuel, which would be the case if you used diesel instead of petrol or vice versa). Simply check compatibility to make sure that E10 fuel is okay for your car and use the right fuel next time. Likewise, if you're out and about and the filling station you stop at doesn't stock E10 or none is available (as you may find in some more remote locations) you don't need to worry too much about filling up with E5 every once in a while. Indeed, the apparent risks of running an older car that doesn't appear on the Government list of E10-compliant vehicles have been somewhat overstated and the relatively small change in the proportion of ethanol in unleaded shouldn't cause too many problems, even in older cars. Many countries have been using E10 for years, and a study commissioned by the US military and Department of Energy as far back as 1981 concluded there was no additional wear and tear to the engine from using E10. While it's true the higher ethanol content does increase the fuel's tendency to absorb condensation in the system, and that could conceivably increase corrosion in metal components like fuel lines and tanks, this would happen anyway in older cars and be considered 'service items' anyway, ditto seals, rubber tubes and other components in the fuel system. The best way to avoid potential issues would be to use your car as regularly as possible to avoid condensation, corrosion and other issues.

E10 fuel for diesel cars

E10 will become the standard grade for petrol cars only – it’s not suitable for diesel cars. At Budget 2020, Chancellor Rishi Sunak announced that from the 1st April 2022, most sectors will not be allowed to use ‘red diesel’ anymore, except for agriculture, horticulture, fish farming, forestry, rail and non-commercial heating system users. 'Red Diesel' is a gas oil containing a red marker dye, used for off-road purposes such as powering non-road machines, bulldozers, stationary engines, heating plant & marine vessels. It makes up for 15% of total diesel used in the UK and produces nearly 14 million tonnes of CO2 per annum. Red diesel is popular because of its rebated fuel duty rate of 11.14 pence per litre (ppl), making it much more affordable than 'white diesel', which has a fuel duty rate of 57.95 ppl.

Extracted from AutoTrader - 1st September 2021

5 views0 comments

Recent Posts

See All
bottom of page