For as long as drivers have complained about fuel prices, the answer has been the same: nobody is obliged to tell you what they charge until you arrive. That stopped being true in one country. Since 2 February 2026, every filling station in the United Kingdom has been legally required to publish its prices, and to publish each change within thirty minutes. It is worth understanding exactly what was built, because it is the clearest picture anyone has of what "live fuel prices" means when a government actually mandates it.
What the law requires
The scheme is called Fuel Finder. It rests on the Motor Fuel Price (Open Data) Regulations 2025, made under powers in the Digital Markets, Competition and Consumers Act 2024, and it is enforced by the Competition and Markets Authority.
The obligations are specific rather than aspirational:
Everyone is in scope. Every petrol filling station in the UK, independent or part of a group, selling E5, E10, diesel, super diesel, B10 or HVO for retail.
Static data had to be registered by 2 February 2026: site name, address, coordinates, opening hours, amenities, contact details, with changes to it reported within three days.
Price changes must be submitted within 30 minutes of happening at the pump. Not daily. Not on a best-efforts basis. Half an hour.
Registration opened on 18 December 2025. A transition period ran from February to May 2026 with regulator support, and from 1 May 2026 the CMA began prioritising enforcement, including formal investigations and financial penalties scaled to the duration of a breach, whether it was concealed, and the size of the business.
The reason it exists
The scheme exists because the regulator went looking and found something, rather than in response to complaints alone.
The CMA's own monitoring puts numbers on it. In the first half of 2025, supermarket fuel margins averaged 8.4%, or 9.8 pence per litre. Non-supermarket retailers averaged 9.8% and 11.0 pence per litre, up from 9.2% and 10.8ppl across 2024. The regulator's assessment was that margins remain elevated against historical levels and are trending upwards.
The starker comparison is the retail spread. Across June to August 2025 it averaged 13.3 pence per litre for both petrol and diesel. The 2015–19 averages were 6.5ppl for petrol and 8.6ppl for diesel, so the spread sat at more than double its pre-pandemic level.
The logic behind the remedy: a market where buyers cannot compare prices before committing to a purchase is not a competitive market, whatever its structure looks like on paper. You cannot shop around for something whose price you only learn on arrival, by which point the search cost usually exceeds the saving. Mandating publication is an attempt to fix the information, not the price: nothing in the regulations caps what a station may charge.
What actually happened at launch
The honest part of this story is the compliance figure, and it is the most instructive number in the whole scheme.
At launch on 2 February 2026, roughly 6,200 of approximately 8,300 UK forecourts had registered. About a quarter were not on the system. The CMA acknowledged teething problems with registration.
Read that carefully, because it is the thing worth taking away. A wealthy country with a single language, a single regulator, statutory penalties and a two-month registration window still started with a quarter of its stations missing. Not because the operators were defiant: mostly because getting several thousand independent businesses to wire a till system into a national data feed is genuinely hard.
Anyone promising complete live fuel prices without a law behind them is claiming to have solved, voluntarily and globally, a problem that a national regulator with the power to fine people solved 75% of in its first month.
What this means outside the UK
Several European countries have long had mandatory or semi-mandatory price reporting: Germany, France, Spain, Austria and Poland among them, with varying scope and refresh rates. Britain's version is notable for the thirty-minute rule and for covering every retailer without exception.
But the map of the world is mostly the other colour. In the majority of countries there is no obligation to publish a fuel price at all, no aggregator, and no penalty for silence. In those places every claim of a "current price" comes from somewhere other than the retailer, and it is worth knowing which somewhere: a scraped app, a several-day-old national average, or a person who was standing at the pump.
There is also a lesson in Fuel Finder's design that applies everywhere. The regulations do not merely require prices: they require a timestamped stream of changes. A price without a time is not a fact anybody can act on, and the drafters clearly understood that. A thirty-minute obligation is, in effect, a legal statement about how quickly fuel-price information decays.
What to do with this as a driver
- In the UK, use the mandated data. It is legally required, enforced, and covers every station. Nothing built on goodwill can beat a statutory feed in the territory where it applies.
- Check whether your country has any scheme at all. This determines what every fuel app you use can possibly know. Where there is a national feed, apps are reading it. Where there is none, they are guessing or relaying.
- Ask what the timestamp is, always. Thirty minutes was chosen by a regulator with evidence in front of it. Treat any price older than a few hours as history rather than information.
- Do not confuse coverage with accuracy. An app showing a price for every station in a country without a mandatory feed is telling you something about its interface, not about its data.
- Expect the gaps to be where you need it most. Registration lags fall hardest on small independents and remote sites: the same places where a driver most needs to know before committing to a detour.
Where we sit in this
It would be strange for us to pretend Fuel Finder is anything other than better than what we do, in the country where it operates. A statutory feed with thirty-minute updates and financial penalties behind it beats voluntary reports, and we would rather say so than talk around it.
What it also does is settle an argument in our favour about everywhere else. The UK had to legislate, appoint an aggregator, set up a registration process and threaten fines to get to roughly three-quarters coverage in month one. That is the actual cost of complete live fuel prices. No app anywhere has paid it voluntarily, which means that outside the countries with schemes, the choice is not between driver reports and an authoritative feed. It is between driver reports and nothing, with the added risk of something dressed up to look like a feed.
So we do the only defensible thing available: show what a real person saw, with the minute they saw it, and show nothing where nobody has looked. An empty space is an honest statement about the world. It is also, we would argue, the correct thing to show until more countries do what Britain just did.