Drivers say extra cost of E5 super unleaded 'justified' by 'terrible' fuel economy of E10


The launch of E10 fuel in September was part of the Government’s push towards net zero, highlighted by the hosting of COP26 in Glasgow. E10 is blended with up to 10 percent renewable ethanol and made up of materials such as low-grade grains, sugars and waste wood, making it greener than existing petrol.

It replaced E5 as the standard grade of unleaded fuel, with the old standard being upgraded to be the new standard of super unleaded.

This move is estimated to be able to cut CO2 emissions by 750,000 tonnes per year, which is the equivalent of taking 350,000 cars off of UK roads.

In spite of the environmental benefits, many drivers have complained of having to fill up more often.

Some motorists even saw more severe issues like a sputtering engine, their vehicle faltering and even an odour from the petrol.

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“The consensus from our customers seems to be that any eco credentials are wiped out by poor fuel consumption.

“That five percent extra ethanol makes them run so badly that you’re doing worse than five percent in fuel economy.

“Overall, you’re going to be using more of the other stuff [E10].”

The RAC had previously warned drivers that around 600,000 vehicles would not be compatible with E10 petrol.

“Like I say, only the very newest bikes seem to be able to cope with E10.

“Anything older than about five or six years old seems to have a problem.

“We’ve got a shop bike, a 2007 Triumph Tiger and that runs terribly on E10.

“On a tank where you would normally get about 160 miles, you might be down to about 120 or 130 miles of fuel.”

The Government warned that some drivers would see a slight drop in fuel economy, generally around one percent.

It said it would be almost unnoticeable and other factors like the weight and speed of the car would make a bigger difference.


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