The IEA sliced nearly 400,000 barrels a day from assessments of consumption growth for the final three months of 2023, and continues to expect that growth rates will decelerate dramatically next year. Meanwhile, soaring production from the US, Brazil and Guyana is offsetting production cuts by Saudi Arabia and its OPEC+ allies, it said.

“Evidence of a slowdown in oil demand is mounting,” the Paris-based adviser said in its monthly report on Thursday. “The increasingly apparent loss of oil demand growth momentum reflects the deterioration in the macroeconomic climate.” 

Crude prices slumped to a five-month low below $73 a barrel in London earlier this week on signs of growing oversupply. Futures have tumbled around 23% since late September as China’s economic outlook darkens while output swells from a number of exporters.

Fresh production cutbacks announced by OPEC+ on Nov. 30 look set to eliminate a glut previously anticipated in the first quarter, but they come at a cost for the cartel: the 23-nation coalition will see its share of the global market whittled to the lowest level since its formation seven years ago, the IEA said. 

They’re also helping to finance a “record-smashing” supply wave from the US, which is “squeezing Saudi Arabia and other core Middle Eastern producers out of prime export markets,” the report said. American oil production exceeded 20 million barrels a day in September, defying predictions that cost inflation would check its growth. 

“The continued rise in output and slowing demand growth will complicate efforts by key producers to defend their market share and maintain elevated oil prices,” the IEA said. A significant supply rebound from OPEC nation Iran is also tempering curbs by other members.

Europe, Russia and the Middle East drove the agency’s downgrade of fourth-quarter demand estimates. Europe was “particularly soft amid the continent’s broad manufacturing and industrial slump,” the IEA said. Higher interest rates are also a headwind, the agency noted.

Global oil demand growth remains on track to increase by a substantial 2.3 million barrels a day this year to average a record 101.7 million a day, bolstered by the remnants of the post-pandemic rebound in consumption. 

Yet growth will slow by roughly 50% next year to 1.1 million barrels a day as that rebound peters out, and consumers turn to more efficient or electric vehicles. The rise in consumption can probably be satisfied by a similar increase in non-OPEC+ supplies, the agency said.

Such a demand slowdown would help put countries on the path agreed at COP28 climate talks in the United Arab Emirates this week, which culminated in a pledge to transition away from fossil fuels.