According to the International Energy Agency (IEA), the U.S.-Israel war against Iran that broke out since the end of February 2026 has triggered an oil supply crisis.
"The conflict in the Middle East has created the largest supply disruption in the history of the global oil market," said the IEA in its report, Sheltering from Oil Shocks (March 2026).
"Beyond the direct damage to energy infrastructure in the region, the crisis has led to a near halt in tanker movements through the Strait of Hormuz," they said.
In response to these conditions, the IEA offers a number of options for saving fuel, so that households, businesses, and governments can withstand supply shocks.
The first option is to drive efficiently, such as sharing cars with others, reducing car use, and reducing the use of air conditioning in cars.
The IEA estimates that these fuel-saving practices could reduce between 5% and 8% of the total fuel consumption of cars at the national level.
Another activity that can support fuel savings is working from home (WFH). According to IEA calculations, implementing WFH for three days per week could reduce between 2% and 6% of the total fuel consumption of cars nationwide.
"Working from home can reduce oil consumption from private vehicles used to commute. While not all jobs are suitable for working from home, it can be an effective measure when the job allows for it," said the IEA.
The IEA also stated that fuel consumption could be reduced by reducing the speed of cars while driving, limiting car traffic with an odd-even license plate system, and encouraging the use of public transport.
These various activities are estimated to reduce national car fuel consumption by between 1% and 6%, with details as shown in the graph.
"In responding to the current crisis, governments can take the lead, both through measures they implement for the public sector and through regulations and mandates, complemented by public information and awareness campaigns," said the IEA.