“Anyone who owns a car made before 2001 needs to check the compatibility of their vehicle with the new fuel.”
Last year’s DfT report said vehicle compatibility had been the main barrier to the introduction of E10 so far.
The report said not all vehicles had been approved by their manufacturers to use fuel with more than five percent ethanol.
It claimed the majority of vehicles registered in the UK are approved for use with E10 with the number decreasing every year.
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Last year, the DfT said there were around 400,000 older family cars which may not be able to use the new fuel with this figure set to halve by the time the new fuel is introduced.
They warn owners of any vehicle built before 2002 to avoid the new ER10 fuel while some models built before 2011 can also be affected.
However, the DfT has previously warned just one percent of total vehicles will be incompatible with the new fuel when it is launched.
Classic car specialists at Hagerty Insurance have warned running on E10 fuel can cause a “variety of issues in older cars”.
The higher amount of ethanol can absorb water which will find its way into the car and lead to damage.
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Hagerty has warned this can lead to condensation in the vehicle’s fuel tanks and cause corrosion in brass, copper, lead, tin and zinc components.