The DfT said this worked out at the equivalent of removing around 350,000 cars from the road.
However, experts at the RCA have warned there could be as many as 600,000 vehicles currently on the road which are not compatible with the fuel.
Drivers have been urged to contact their car manufacturer as soon as possible and ask them questions about your specific vehicle.
As a rule, those who own a car built before 2002 are not advised to use the new E10 in their cars.
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Experts at Hagerty have also warned some vehicles built before 2011 may also be unable to use the fuel.
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.