Prime Minister Boris Johnson will relax the push for British motorists to use green fuel, amid concerns that it could contribute to the cost-of-living crisis.
The Telegraph says he wants to reduce the amount of biofuel used in the UK, despite it being a key plank of his Government's net-zero ambitions.
Production of biofuel uses plants such as wheat and maize.
The Prime Minister wants the land to instead be used for producing more food, in bid to combat soaring prices.
He will call on G7 leaders to review their own biofuel use, in a move that could help mitigate the global food crisis.
Mr Johnson said: "While Vladimir Putin continues his futile and unprovoked war in Ukraine and cravenly blockades millions of tonnes of grain, the world's poorest people are inching closer to starvation.
"From emergency food aid to reviewing our own biofuel use, the UK is playing its part to address this pernicious global crisis."
Eco-friendly petrol
Biofuel makes up 10% of E10 fuel, which was designed to be a more eco-friendly petrol.
It is now the standard petrol grade, following its introduction to UK filling stations from last September.
To help reduce carbon-dioxide emissions in the UK, the Government decided to change the standard grade of petrol from 95% octane and 5% ethanol to a mix that contains 10% renewable ethanol and the rest octane.
On Thursday, sources said cutting use of crop-based biofuels would mean the requirement for the greener fuel to be the main offering at petrol stations would have to be temporarily dropped.
Tory backbenchers said the push for E10, which is more expensive than alternatives because it is less efficient, had raised costs for consumers with little benefit at a time of soaring fuel and food prices.
Craig Mackinlay, chairman of the Net-Zero Scrutiny Group of MPs, told the Telegraph: "The whole E10 debate has been quite scandalous as it was, because you end up with poorer consumption and older vehicles suffering a variety of mechanical problems.
"We need to look at a lot of these 'greenwash' proposals and consider: Are they truly green? Wouldn't production of foodstuffs be a more primary goal for the land?
Environmental policies
"I think the Government would be well served to look very carefully at many of these environmental policies again."
However, Government sources stressed that the primary purpose of the Prime Minister's review was to ensure people in poor countries have access to grain.
The move would be the latest shift in the Government's approach to net zero as it tackles the cost of living crisis.
On Thursday, Kwasi Kwarteng, the Business Secretary, said he would consider the case for fracking next week, after the results of a scientific review opened in the wake of the war in Ukraine. He has also defended the development of a new gas field in the North Sea, arguing the need to be "realistic about our energy needs now".
Steve Baker MP, a member of Net-Zero Watch, said to the Telegraph: "Once again we see that net-zero policy is economically, socially and politically unviable.
"However much we desire to look after our environment, we also need to implement policies that stack up with reality."
Environmental groups argue that moving away from fossil fuels is the only way for the UK to secure energy independence in the short-term and reduce energy costs.