Oil-producing countries have agreed to continued cuts in production in a bid to shore up flagging prices.
Saudi Arabia said it would make cuts of a million barrels per day (bpd) in July and Opec+ said targets would drop by a further 1.4 million bpd from 2024.
Opec+ accounts for around 40% of the world's crude oil and its decisions can have a major impact on oil prices.
Average diesel prices fell by a record 12p per litre in the UK last month, according to the RAC.
The seven-hour-long meeting of the oil-rich nations, led by Russia, came amid a backdrop of falling prices and an over-supply of the commodity.
Total production cuts, which Opec+ has undertaken since October 2022, reached 3.66 million bpd, according to Russian Deputy Prime Minister Alexander Novak.
Opec+, a formulation which refers to the Organisation of Petroleum Exporting Countries and its allies, had already agreed to cut production by two million bpd, about 2% of global demand.
"The result of the discussions was the extension of the deal until the end of 2024," Mr Novak said.
'A Saudi lollipop'
In April, it also agreed a surprise voluntary cut of 1.6 million bpd which took effect in May, a move that briefly saw an increase in prices but failed to bring about a lasting recovery.
On Sunday, Saudi Energy Minister Prince Abdulaziz bin Salman said the cut of one million bpd could be extended beyond July if needed. "This is a Saudi lollipop," he said, in what is seen as a bid to stabilise the market.