Is the US about to ban diesel exports, and what would it mean for UK pump prices?

What is being shared

The headline doing the rounds is “European diesel prices surge as Trump mulls 90-day US export ban” (The Telegraph, 23 September 2026). The Telegraph had run “Trump considers diesel export ban in threat to UK” on 22 September, and the BBC’s version that evening read “Trump says he would back ban on diesel exports as pump prices hit record” (BBC News, 22 September 2026, as indexed by Google News). On the morning of 23 September London Loves Business ran “Trump threatens diesel export ban as UK prices rocket”; Bloomberg then ran “Trump’s Fuel Export Ban Threat Sends European Diesel Soaring” and, hours later, “US Prepares Plan for 90-Day Diesel Export Ban, Politico Reports”. The Telegraph’s “…mulls 90-day US export ban” followed that evening. The same day the RAC warned “Record diesel price looms”, citing concerns over global wholesale supply rather than anything said in Washington.

The record in the BBC’s headline is the American one: US diesel passed $6.50 a gallon on 22 September, according to American Automobile Association data reported by the BBC. The UK average was 1.78p short of its own record on 23 September (RAC). Two things are being welded together: a real rise at British pumps, under way since February, and a US policy that Republican lawmakers had been urging in the days before the President backed it on 22 September and that, as of the morning of 24 September, has not been decided. Here is what was said, and what it means at a British pump.

What was actually said, and when

A growing number of Republican lawmakers had called in recent days for a short-term ban on diesel exports. Speaking to reporters at his meeting with Ukraine’s president on Tuesday 22 September, Donald Trump said, “I called for that too,” and “I’ve said, ‘let’s not send out the diesel’.” His Treasury Secretary, Scott Bessent, put it more narrowly: “We’re examining that, whether it’s feasible in terms of the overall refining capacity and whether a full or a partial ban would work” (Argus Media, 22 September 2026).

On Wednesday 23 September Politico reported, citing five people familiar with the discussions, that the White House was preparing a plan for a 90-day ban and that the legal process for imposing one was still being worked out (The Hill, 23 September 2026). Politico also reported that the President was inclined to put a ban forward by the end of this week (as summarised by Bloomberg, 23 September). Within hours the White House told The Hill, in an unsigned statement: “This is not true.”

The same day the US Energy Secretary, Chris Wright, said in New York that the administration did not plan a “blanket ban” and that any change was “more likely to be done entirely voluntary”: “We will not cease exports of US diesel. But may there be some tweak in where diesel flows out of US refineries? Yeah, I think we’re going to see that” (Argus Media, 23 September 2026). Where that leaves things, as of the morning of 24 September: a President who favours a ban, a Treasury studying one, a plan reported and denied within hours, and an Energy Secretary who has ruled out a full stop. Nothing had been decided, signed or scheduled at the time of writing, and a decision could come within days.

Later on 23 September Wright told The New York Times that “nobody wants a full blanket ban or zero exports of diesel” and “that’s not being discussed”. The same day the US Chamber of Commerce, the Business Roundtable, the National Association of Manufacturers, the American Petroleum Institute and dozens of other groups wrote to the President that a ban would “lead to less fuel production, tighter supplies and rising costs for American families, farmers and truckers” (CNBC, 24 September 2026). By the evening of 24 September, UK time, we had found no announcement of a ban, an order or a date.

The market move is real, and older than the headlines

The European reaction was immediate. On 23 September the premium of European diesel over Brent crude, which traders call the crack spread, reached a record of about $95 a barrel (Reuters, 23 September 2026); Bloomberg put it at more than $95, the highest in its data going back to 2011. That is the “surge” in the headline: a wholesale market figure, not a pump price.

It did not start this week. Argus Media, the price-reporting agency, recorded European diesel cracks at records at the end of July, topping $90 a barrel on 29 July, and put the tightness down to the closure of the Strait of Hormuz and Russia’s ban on diesel exports (Argus Media, 31 July 2026). The US talk landed on a market already stretched, which is why a few words from Washington moved it so far. Our guide to why diesel is so expensive covers the refining squeeze behind it.

Bloomberg describes the United States as Europe’s main overseas supplier of diesel (23 September 2026); the US Energy Information Administration’s weekly series shows US distillate exports at 1,935,000 barrels a day in the week ending 7 August 2026, the highest on record, and 1,331,000 barrels a day in the week ending 18 September (EIA, Weekly U.S. Exports of Total Distillate).

How much of Britain’s diesel comes from America

The government’s figures are worth reading precisely. In 2025 just under 40% of the UK’s petroleum product imports were diesel, and of those diesel imports the United States supplied 31%, the Netherlands 26% and Belgium 11% (DESNZ, Digest of UK Energy Statistics 2026, Chapter 3, published 30 July 2026). Across all oil products the US share is 15%, behind the Netherlands at almost a quarter; the 31% is the figure that matters here.

How much that exposes the country depends on how much diesel is imported at all: “about 55 per cent” of road diesel, according to Elizabeth de Jong, chief executive of Fuels Industry UK (quoted in The Telegraph, 22 September 2026). Put the two together and roughly one litre in six of Britain’s diesel arrives from the United States, though the two figures measure slightly different things.

Two things follow. A real US ban would matter to Britain. And a ban is not the same as no diesel: the Netherlands, which DESNZ describes as the UK’s closest major oil refining and trading hub, and Belgium together supplied 37% of diesel imports in 2025, and we would expect other suppliers to fill most of any gap, so the effect would most likely reach households as a higher price rather than an empty pump. That is our judgement, not a published forecast; Bloomberg’s own headline on 23 September was that the ban push “Would Threaten Fuel Supply in UK, Brazil”. On stocks, the UK’s oil holdings exceeded the International Energy Agency’s 90-day requirement at the end of 2025 (DESNZ, DUKES 2026). It took part in a co-ordinated release in March 2026 in response to the US–Iran conflict; at the end of June 2026 stocks stood at 10 million tonnes, 2.4% lower than a year earlier, with stocks of key transport fuels broadly unchanged (DESNZ, Energy Trends Table 3.11, 27 August 2026).

What it means at the pump

The UK price was close to its record before the export story. RAC Fuel Watch put the average litre of diesel at 197.31p on 23 September, 1.78p below the all-time high of 199.09p set on 25 June 2022, and 54.9p higher than on 28 February. Simon Williams, the RAC’s head of policy, said the question “is no longer ‘when will the average price exceed 199.09p?’ but ‘how far above £2 a litre will it climb?’” (RAC, 23 September 2026). That is an expectation, not a fact yet.

Our own fuel price tracker, which reads the statutory Fuel Finder feed, had diesel averaging 198.0p a litre across about 7,750 forecourts on 24 September, with 15.6% of them already charging £2 or more. Our longer-running series of retailers’ price files, which we use for like-for-like change, was up 3.4p in seven days, although the 24 September figure includes about 0.2p from a check we added on 23 September that leaves out implausibly low listings. The page updates continuously, so the figures will have moved by the time you read this.

The CMA’s monitoring explains why a wholesale move reaches you. It found that diesel rose 49.8p a litre between the end of February and the week of 20 April 2026, from 141.5p to 191.2p, that “increases in wholesale costs are the main driver of the rapid rise in the fuel prices”, and that, on average, large retailers’ margins were broadly unchanged between February and March and close to the 2025 average, though at historically high levels, with increases at a minority of retailers (CMA, 1 May 2026). In August it added that “some retailers did not immediately pass reductions in wholesale diesel prices on to drivers” (CMA, 18 August 2026). In plain terms: this week’s record crack spread is likely to be felt at the pump, and relief when it eases can arrive more slowly, at least from some retailers. The CMA has not yet published how long either takes; it says it will assess “whether wholesale price changes are reflected in retail prices in a timely manner” in its autumn report.

What to do, and what not to do

Keep buying fuel as you normally would. We have seen no sign of shortages at UK forecourts, and nothing in the US story changes physical supply this week. In September 2021 the Business Secretary said there had “always been and continues to be plenty of fuel at refineries and terminals”, and ten fuel companies and trade bodies said jointly that the issues were “due to temporary spikes in customer demand, not a national shortage of fuel” (BEIS, 26 September 2021). Our guide to fuel shortages sets out why joining a queue makes things worse.

Do not run the tank down to the warning light as a habit; above a quarter, a brief local disruption is unlikely to strand you or force you into a queue. Do not fill cans to hoard fuel: it is a fire risk. If you store more than 30 litres of petrol at home, you should notify your local Petroleum Enforcement Authority in writing (HSE, If you store petrol at home, or at a club/association or similar premises); that 30-litre rule is for petrol, not diesel, and our fuel shortages guide covers the law. Do shop around: on 24 September our tracker showed supermarket diesel around 4p a litre cheaper than other off-motorway sites, motorway diesel about 15p dearer, and Northern Ireland roughly 5p below the UK average. The postcode lookup lists the cheapest forecourts within ten miles.

What would change this verdict

The verdict is dated 24 September 2026 and rests on two facts: the price rise is documented, and no US export ban has been decided. The second could change within days. Politico reported that the President was inclined to put a ban forward by the end of this week; if the White House issues an order restricting diesel exports, whether full, partial or “voluntary” in a form that measurably cuts cargoes to Europe, we will update this page on the day and report what the EIA’s weekly export figures show afterwards. The verdict would also change if the European crack spread fell back and pump prices followed. We will note the day if the RAC’s UK average passes its 199.09p record.