He explained this was because the new compound is less energy-dense meaning more fuel would be used than under traditional E5 Unleaded petrol.
The Department for Transport has previously confirmed the new petrol would lead to lower fuel economy.
They warned fuel efficiency could drop by around two percent under the new compound but suggested “driving style’” would have a bigger impact.
But Express reader Traitorimpact hit back at the DfT, claiming the new compound was an attempt to secure more tax income.
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