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Apie E95:

5% bioethanol blends

We include up to 5% bioethanol in all the petrol we manufacture - from our main grade (95 octane) petrol through to our performance petrols, Tesco 99 Octane and motorsport fuels.

Bioethanol, itself an oxygenate with an octane rating of 135, is used to increase power output in these performance fuels as well as help reduce their carbon emissions.

In our mainstream fuels, we are restricted in the amount of bioethanol we can use by the European petrol standard, BS EN 228, which permits a maximum of 5% bioethanol in petrol. The European standard bodies are currently discussing increasing this amount, potentially to 10%, and when this happens we will be able to increase the percentage of bioethanol we use.