Both E5 and E10 are unleaded petrol but E10 contains a higher proportion of bio-ethanol - up to 10% compared with a maximum of 5% in E5. This higher bio-ethanol content - obtained from renewable sources - helps to reduce the CO2 emissions from vehicles but slightly reduces their fuel efficiency.

Does E5 mean petrol?

Petrol in the UK currently contains up to 5% renewable ethanol (known as E5). E10 petrol is already widely used around the world, including across Europe, the US and Australia. It has also been the reference fuel against which new cars are tested for emissions and performance since 2016.

Is E5 the same as 95 petrol?

The current petrol grade is E5 which is made up of 95% regular unleaded petrol and 5% renewable ethanol (hence the name).