Several road users have complained about losing miles per gallon since petrol stations made the switch last year. One road user has reported losing up to 60 miles in their tank since they started using the new compound.
Meanwhile, others claim to have already switched back to the old E5 fuel and reported a “smoother ride”.
Twitter user Lozz Dee said: “Do you think driving around on E10 fuel is actually better for the planet, then think again.
“Have many of you been checking your MPG to compare before and after the change?
“Anyone else noticing up to 20 percent worse consumption?”
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Reader Ferrettable said: “I must admit I haven’t noticed any difference in my car’s performance or mpg.”
The Department for Transport has previously warned fuel efficiency rates could be affected.
In their Introducing E10 Petrol report, they warned drivers could lose one or two percent efficiency as a result of the switch.
However, they warned “driving style” was just as important in minimising the damage to economy rates.
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