The country has begun the shift to using E10 fuel in cars and other vehicles with a deadline of September.
Containing less carbon and more ethanol, and therefore better for the environment, the petrol is being rolled out to forecourts throughout this month.
But an estimated one million cars won’t be able to use E10 – meaning they will need to carry on being filled up with the more expensive E5 type, BirminghamLive reports.
Commonly sold as ‘super unleaded’, 97 Octane fuel will still be sold but will cost drivers more to use.
And report has revealed that upgrading every classic car in the UK to be compatible with E10 will cost an average of £297 per car.
It estimates that drivers can either have mechanics update their motor for an average of £297 each or continue to use E5 fuel.
The latter option will reportedly cost the car owners around £43 more per year – totalling £11.2 million extra spent on fuel, if half of Britain’s classic car owners continue using E5.
In addition, it could even require some people to spend £517 to pay for an upgrade to use E10.
The price of replacement parts will vary depending on the make and model of older cars, as well as the charge for labour at a garage.
Those who feel they’re up to the challenge can try upgrading their car themselves for just £45 – a £252 saving.
The Government says that around 95 per cent of petrol-powered vehicles on the road are compatible with E10 petrol and “this figure is increasing all the time”.
“All new cars manufactured since 2011 are compatible with E10 petrol, and most cars and motorcycles manufactured since the late 1990s are also approved by manufacturers to use E10,” the Government adds.
“The following vehicles, however, may not be compatible with E10 petrol – classic, cherished and older vehicles; some specific models, particularly those from the early 2000s; some mopeds, particularly those with an engine size of 50cc or under.”
While many owners will be impacted, it’s unlikely that all affected cars would need a complete upgrade.
Ryan Fulthorpe, from GoCompare which issued the report, said: “If classic car owners continue to use E5 petrol rather than updating their vehicle, they may pay an extra £43 per year for fuel.
“Our latest figures show that upgrading your car through a specialist could cost a total of £297. Although this is a larger amount to pay upfront, you’ll be able to switch to E10 fuel. That means that you won’t need to pay the higher price for super unleaded petrol.”
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