Analysts consistently observe a direct correlation between crude oil price fluctuations and pump prices. Their assessments suggest that for every $10 (£7.44) increase in the price of a barrel of oil, motorists can anticipate an approximate 7p per litre rise at the forecourts. This rule of thumb underscores the sensitivity of fuel prices to global energy markets. However, it’s important to note that these changes are not instantaneous; due to the slow process of transporting and refining oil, price movements in the wholesale markets typically take about a fortnight to fully manifest at the petrol station.
Since the onset of the Iran war, the global benchmark for wholesale oil prices, Brent crude, has experienced considerable volatility. Geopolitical events inherently inject uncertainty into energy markets. Generally speaking, any news signaling an escalation of conflict or increased instability within key oil-producing regions tends to drive prices upwards, as markets anticipate potential supply disruptions. Conversely, any glimmer of hope for a resolution or an end to hostilities typically causes prices to retreat, reflecting a perceived reduction in risk and the potential for stable or increased supply.
Before the conflict ignited, Brent crude was trading at a relatively stable level, hovering around $70 a barrel. The commencement of hostilities, however, rapidly propelled prices to a peak exceeding $120. This sharp surge was indicative of the market’s immediate reaction to geopolitical risk in a region vital for global oil supply, particularly given Iran’s historical role as a significant oil exporter and its strategic location near the Strait of Hormuz, a critical shipping chokepoint. In early July, a framework deal offered a brief period of optimism, leading prices to fall back significantly, nearing the pre-conflict $70 a barrel mark. This downturn reflected the market’s belief that a diplomatic resolution could ease tensions and stabilize supply. However, when peace talks subsequently collapsed, the price quickly climbed back above $100 a barrel, demonstrating the fragility of the market’s confidence. Currently, Brent crude is trading around $94 a barrel, still elevated compared to pre-war levels but below its immediate post-conflict peak.
While petrol has now reached its highest price point since the Iran war began, according to data from the RAC, diesel prices have shown a slightly different trajectory. Diesel remains below the record peak of 191.54p a litre it achieved on 15 April. The differing price dynamics between petrol and diesel can often be attributed to variations in demand profiles – diesel is heavily used by commercial vehicles, logistics, and industrial sectors, while petrol is predominantly for private passenger cars. Refining processes also play a role, as different crude oil types yield varying proportions of petrol and diesel, and refinery maintenance or outages can affect specific fuel supplies.
In early July, coinciding with the dip in crude oil prices, the RAC reported that the average price of petrol had fallen to a low of 150.59p per litre, with diesel averaging 164.52p per litre. However, this period of respite for drivers proved short-lived. Since then, both fuel types have seen a steady increase, with petrol now standing at an average of 163.6p a litre and diesel costing 184.99p a litre. This resurgence in prices aligns with the broader upward trend observed in wholesale oil markets after the collapse of peace talks.
Simon Williams, the head of policy at the RAC, has issued a stark warning to motorists. He stated that with oil prices remaining stubbornly elevated, drivers will "almost certainly start paying noticeably more at the pumps in the coming weeks." This prediction is rooted in the continued geopolitical instability, the lag time between wholesale and retail prices, and the general upward pressure on crude oil. Furthermore, factors such as seasonal demand shifts as colder weather approaches, and potential refinery issues, could exacerbate price increases.
Despite the current conflict and its impact on fuel costs, it is crucial to place these prices in historical context. Both petrol and diesel prices currently remain below the extreme levels reached in the summer of 2022. That period saw petrol peak at 191.5p a litre and diesel hit an unprecedented 199p, largely driven by the far-reaching economic and geopolitical consequences of Russia’s full-scale invasion of Ukraine. Russia’s role as a major global energy supplier meant that sanctions and supply fears had a much more profound and immediate impact on global energy markets, leading to a broader energy crisis that affected gas and electricity prices as well as road fuels.
Fuel retailers have consistently denied accusations of price gouging during the current conflict, asserting that their pricing strategies are a reflection of wholesale costs and competitive market dynamics rather than opportunistic profiteering. The official markets regulator, after scrutinizing pricing practices, has largely supported this stance, stating it had "not seen evidence of retailers actively changing their pricing strategies to take advantage of the crisis." However, the Competition and Markets Authority (CMA) continues to monitor the fuel market closely, investigating aspects such as varying margins between different types of retailers and the speed at which price reductions are passed on to consumers compared to price increases.
In a move aimed at enhancing transparency and empowering consumers, the government introduced a scheme called Fuel Finder. This innovative online tool allows drivers to compare the cost of fuel offered by petrol stations across the UK, fostering greater competition among retailers. Luke Bosdet, the head of policy at the AA, expressed surprise at the speed with which prices had fallen during certain periods, attributing this positive development, in part, to the effectiveness of the Fuel Finder scheme. By making price information readily available, the scheme encourages drivers to seek out the cheapest fuel, putting pressure on retailers to remain competitive.
Further mitigating the financial burden on motorists, in May, the then Prime Minister Sir Keir Starmer announced that a planned 5p increase in fuel duty, originally scheduled for September, would be postponed until the end of December. This decision was directly linked to the ongoing conflict and the wider cost of living crisis affecting households across the UK. The government recognized the additional financial strain that an increase in fuel duty would place on commuters and businesses, choosing to delay the measure to provide some relief during a period of economic uncertainty and elevated energy costs. This postponement offered a temporary reprieve, though the eventual decision regarding the duty increase in December will again be a critical factor influencing pump prices.
In summary, UK drivers are facing renewed pressure at the pumps as petrol prices reach a post-Iran war high. The complex interplay of volatile global crude oil prices, geopolitical tensions, refining capacities, and domestic taxation dictates these costs. While the situation is not as severe as the peaks seen during the initial phase of the Russia-Ukraine conflict, the outlook, according to industry experts, points towards continued upward pressure. Transparency initiatives like Fuel Finder and government interventions on fuel duty offer some mitigation, but the global energy market’s inherent instability means motorists must remain prepared for ongoing fluctuations.







