// Live · Wales · free
Cheapest fuel in Cardiff
Compare live petrol and diesel prices across Cardiff and Wales. Cardiff and the surrounding valleys have a strong spread of supermarket fuel to compare against branded sites. Prices below refresh throughout the day from the UK government's open fuel-price scheme, and the cheapest unleaded we can see right now is 149.7p a litre.
Prices from participating major retailers via the UK government's open fuel-price scheme. Small independents that don't publish data won't appear. Always check at the pump.
How to find the cheapest fuel in Cardiff
Fuel is one of the biggest running costs for any Cardiff driver — and for tradesmen doing 20,000+ miles a year it's a serious chunk of the wage bill. Prices between forecourts in Wales can differ by 10p a litre or more, so a quick compare before you fill can save hundreds of pounds a year.
- Supermarket forecourts (Asda, Tesco, Morrisons, Sainsbury's) are usually the cheapest in Cardiff.
- Fill up before joining the motorway — service-station fuel is almost always dearer.
- Prices move daily, so check live figures rather than relying on last week's price.
- Diesel and unleaded don't always track together — switch the toggle above to compare your fuel.
Cardiff fuel prices — FAQs
Where is the cheapest petrol in Cardiff?
The cheapest unleaded and diesel in Cardiff changes daily. This page shows live prices from major retailers within a few miles of the city centre, with the cheapest forecourt highlighted at the top.
How often do Cardiff fuel prices update?
Prices are pulled from the UK government's open fuel-price scheme and refreshed throughout the day, so what you see here closely tracks the pumps in Wales.
Which fuel stations in Cardiff are included?
We show participating major retailers such as Asda, Tesco, Morrisons, Esso, BP and Motor Fuel Group. Small independents that don't publish price data won't appear.
Is the Cardiff fuel price checker free?
Yes — comparing fuel prices in Cardiff is completely free and needs no sign-up. TradesMate is built for UK tradesmen but anyone can use the fuel tracker.
Fuel prices in other UK cities
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