E10 petrol – what is it and can I use it in my Toyota?

The new E10 petrol grade is being introduced across the United Kingdom from September 2021. The move is part of the government’s strategy to reduce harmful emissions from transport

Although the new E10 petrol retains the same 95-octane rating as existing unleaded petrol, it contains a much higher proportion of ethanol. Currently, all petrol supplied at filling stations contains a five per cent mix of ethanol, which is why it is known as E5. However, from September 2021, that proportion will be doubled in standard grade petrol. The fuel will be identified by the code E10.

This change will not affect Toyota owners with a diesel-powered vehicle.

Which Toyota models can use E10 petrol?

If your Toyota has a petrol engine or hybrid powertrain and was officially produced for European markets since January 1998, it will be compatible with E10 petrol.

The only exceptions to this rule are the following vehicles:

  • Toyota Avensis with 2.0-litre 1AZ-FSE engine made between July 2000 and October 2008.
  • Toyota Avensis with 2.4-litre 2AZ-FSE engine made between June 2003 and October 2008.

If your vehicle was produced before January 1998, it cannot use E10 fuel.

Can you use E10 petrol in imported cars?

If your car is an imported model that was not officially sold in European markets, we recommend staying on E5 by using super unleaded, which has a higher octane rating. Having received queries from owners regarding specific imported models, we are investigating this further.

E10 petrol

How can I check if my Toyota can use E10 petrol?

This can be confirmed by checking the owner’s manual or looking at the information printed on the inside of the fuel filler flap. If you are still unsure, use E5 petrol, which will continue to be dispensed from the super unleaded pump at many filling stations.

E10 petrol

Why is the ethanol content being increased?

Ethanol is a renewable, non-fossil biofuel produced from sustainable sources. It is made using by-products from the farming industry, such as those from wheat, corn and sugar crops.

By increasing the proportion of biofuel in petrol, the content of fossil fuel and therefore our reliance on it decreases. This will reduce the overall levels of CO2 (carbon dioxide) emissions from vehicles and help the government achieve its climate change targets. It has been calculated that this change from E5 to E10 petrol will cut harmful transport emissions by 750,000 tonnes a year. That’s the equivalent of taking 350,000 cars off the road.

E10 petrol

Why isn’t the ethanol content much higher?

The composition of ethanol is different to that of a crude oil based fossil fuel such as petrol. Higher blends of ethanol can cause corrosion of some rubbers and alloys used in the engine and fuel systems of some older vehicles.

A small number of these vehicles will need to continue using E5 petrol, and this will remain widely available at filling stations in super unleaded grade.

Is this change to E10 petrol only happening in the UK?

No. In fact, E10 petrol is already common throughout the world. It has also been the reference fuel used for all new car emissions and performance testing since 2016.

Useful link The government has a simple ‘E10 checker’ tool on its website here.

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1,615 comments

  1. I have RAV 4 which was purchased NEW on 4th June 1999…..I do NOT know when it was actually built.
    Therefore , can you confirm if it’s safe to now use E10 Fuel or should I only use E5 ?

  2. Hi we have 3 imported Celica GT4 ST205 models. Two are ‘94 models and one is ‘95. Is it safe to say that they will be better off on the E5 higher octane fuel?
    Thank you. 🙂

  3. I have Toyota Corrolla Reg V932 EPW and have been advised by my garage that I have to use E5 , not E10 – but the Government website says all Toyotas after 1998 is ok for E10 – so I am little confused – can you help?

    1. Hello Daniel, thanks for your comment.

      We would recommend that you continue to use E5 fuel. It will still be available in the super-unleaded format.

      Thanks.

  4. hi,

    thanks for the article.

    I have a imported Granvia 3.4 V6 from 2000. I drive it mainly on LPG, but it starts on petrol and automatically switches to LPG.

    Do you think it is safe to swap to E10 ?

    Many thanks,
    Frank

    1. Hello, thanks for your comment.

      We would recommend that you continue to use E5 fuel. It will still be available in the super-unleaded format.

      Thanks.

  5. You have answered my Q ref e10 or E5 in a private e mail My Yaris is ok for E10 ..A open question for the Forum here though.Q can I mix e 10 and e 5. occasionally or all the time..or stay with one or the other..Just curious and no clear answer appears on the INTERWEB…Regards.

    1. Hi Patrick, thanks for your comment.

      We found this on the GOV.UK website:

      “Mixing E10 and E5 petrol
      If your vehicle is compatible with E10 petrol, there’s no reason you can’t mix the 2 grades of petrol (E5 97+ and E10 95+). It’s perfectly safe to mix them in the same tank or fill up with E5 if E10 is not available.”

      Thanks.

  6. My Toyota Avensis is from 2008 – don’t know what month. It has a 1.794L engine I believe.

    UK Registration GV08ZPT

    Does it have a 1AZ FSE engine? That is not mentioned on any paperwork.

    Can I use E10 petrol safely?

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