Petrol Prices Hit Iran War High as UK Drivers Face 160p-a-Litre Costs at the Pump

Petrol prices have climbed to their highest level since the Iran conflict began, with the average pump price reaching 160.85 pence per litre as ongoing Middle East tensions continue to push the cost of crude oil higher. Drivers filling up a typical family car are now paying roughly £90 for a full tank, and the RAC has described the situation as “very unwelcome news” for household budgets already under pressure.

The rise brings to an end a sustained period of falling fuel prices that ran through much of spring 2026. Petrol had been declining steadily from the start of the year as global supply caught up with demand, but the trend reversed sharply in July and has continued upward into August. Diesel is now averaging 174 pence per litre, a level not seen for more than a year.

Why Are Petrol Prices Rising Again?

The primary driver of the current price surge is the disruption to oil and gas flows through the Strait of Hormuz, a narrow waterway running between Iran and Oman that handles roughly 20 per cent of the world’s energy supply. Since the start of the Iran conflict, insurance and shipping costs for vessels passing through the strait have risen sharply, pushing up the wholesale cost of crude oil and, in turn, the prices paid at UK forecourts.

Brent crude oil, the benchmark used to set UK pump prices, has climbed significantly in recent weeks as traders factor in the risk of sustained disruption. Oil analysts have warned that any escalation of the conflict, or a move by Iran to restrict traffic through the strait more aggressively, could push prices considerably higher still before the end of the year.

The RAC’s fuel spokesman Simon Williams said the latest data was deeply frustrating for drivers who had seen some relief earlier in the year. “We’d hoped the sustained period of falling prices from spring would give motorists a meaningful break, but the situation in the Middle East has put paid to that,” he said. “Pump prices are now heading in entirely the wrong direction and it’s very unwelcome news for drivers.”

What Are the Current UK Petrol Prices?

The national average for unleaded petrol as of the first week of August 2026 stands at 160.85 pence per litre, according to data compiled by fuel price monitoring services. Diesel sits at 174 pence per litre on average, though prices vary significantly by region and retailer.

Supermarket forecourts, which typically undercut motorway and branded service stations by several pence per litre, have been slower to pass on wholesale price increases in the past. However, the speed of the recent climb means the gap between the cheapest and most expensive fuel has narrowed, with some independent forecourts already charging above 165 pence per litre for unleaded.

Motorway service stations remain the most expensive places to fill up in the UK, with prices regularly running 15 to 20 pence per litre higher than nearby supermarkets. Drivers planning long journeys are advised to use apps such as Petrol Prices or GasBuddy to locate cheaper stations along their route before setting out.

Forecourts Are Also Battling a Wave of Theft and Abuse

The price rises are compounding a separate and serious problem at UK petrol stations. Data from forecourt industry monitoring service Forecourt Eye shows that the volume of fuel stolen from UK forecourts every day has risen by 24 per cent since the Iran conflict began, with an estimated £200,000 worth of petrol and diesel now being taken without payment on a daily basis.

Drive-offs, where motorists fill up and then leave without paying, account for the majority of the thefts. Forecourt operators say the combination of rising pump prices and a cost-of-living squeeze has contributed to a measurable increase in deliberate non-payment. Some sites have switched to pre-payment systems as a result, requiring drivers to pay before lifting the nozzle.

Beyond theft, forecourt staff are also reporting a rise in verbal and physical abuse, particularly when customers are confronted about unpaid fuel or when prices are prominently displayed. Forecourt trade bodies have called on the government to introduce tougher penalties for drive-offs and to provide clearer legal guidance for staff dealing with difficult situations.

How Much More Will UK Drivers Pay?

For the average UK motorist driving around 7,400 miles per year in a car returning 40 miles per gallon, the increase from the spring 2026 low of approximately 145 pence per litre to the current 160.85 pence represents an additional annual fuel cost of around £135. That figure rises further for drivers of larger cars, high-mileage commuters and those in parts of the country where supermarket forecourts are not easily accessible.

Van drivers and small business owners face proportionally higher exposure. A medium-sized diesel van covering 15,000 miles a year at 35 miles per gallon would see its annual fuel spend rise by more than £250 compared to the spring low.

Fuel costs are not restricted to domestic drivers either. The rises feed directly into haulage and delivery costs, which ultimately flow through to the prices consumers pay for goods and services. Transport industry bodies have already flagged that extended periods of high fuel prices increase the risk of surcharges being applied to freight contracts, with knock-on effects across retail, food distribution and construction.

What Can Drivers Do to Cut Their Fuel Bills?

While individual drivers cannot control the global oil price, there are several practical steps that can reduce fuel consumption and blunt the impact of rising prices. Keeping tyres inflated to the correct pressure is one of the most effective measures. An underinflated tyre creates additional rolling resistance, and research suggests that tyres running at 10 psi below the recommended pressure can increase fuel consumption by as much as 3 per cent.

Smooth driving habits also make a significant difference. Accelerating gently, anticipating traffic flow to avoid unnecessary braking and maintaining a steady speed on dual carriageways and motorways rather than varying pace can reduce fuel use by 10 to 15 per cent compared to more aggressive driving styles. The Government’s own guidance on eco-driving suggests that easing off the accelerator a few hundred metres before a junction and allowing the car to coast to a stop rather than braking hard can save meaningful amounts of fuel over a typical journey.

Air conditioning increases engine load and fuel consumption, particularly at lower speeds in city traffic. At motorway speeds the aerodynamic penalty of driving with the windows open is roughly equivalent to running the air conditioning, so the advice on the motorway is to use air conditioning; in town, opening the windows is cheaper.

Comparing fuel prices before filling up remains the simplest way to save money. Supermarket forecourts are almost always cheaper than branded or motorway stations, and the Petrol Prices comparison tool and the government-mandated Fuel Finder scheme, which requires all forecourts to report their prices daily, both allow drivers to identify the cheapest option close to them.

Is Relief on the Horizon?

Oil analysts are divided on whether prices will continue to rise or whether the current level represents a peak. If the Iran conflict remains at its current intensity without further escalation, some forecasters believe crude oil could stabilise, allowing pump prices to ease in the final quarter of 2026. The government’s planned increase to fuel duty, which was confirmed in the spring Budget but is not due to take effect until September, has already been factored into current prices by most forecourt operators.

A negotiated ceasefire or a reduction in Strait of Hormuz tensions would likely trigger a swift drop in crude oil prices and, with a short lag, lower pump prices in the UK. However, the reverse is also true: any military escalation that threatens the strait more directly could push prices well above 170 pence per litre within days of such an event.

For now, drivers should expect prices to remain around current levels in the short term and plan their filling-up strategy accordingly, prioritising supermarket forecourts and making the most of loyalty scheme fuel discounts where available.

Sources: Auto Express | Brumble | RAC