Fuel Prices in Cardiff
Compare petrol and diesel prices across Cardiff and South Wales.
Cardiff and the surrounding South Wales area have a healthy number of fuel stations, but prices still vary more than you'd expect. A quick check before filling up can save you several pounds each time.
fuelfinder.ai covers every station in the CF postcode area using official CMA data. Supermarkets, branded forecourts, and independents — all prices in one place, sorted cheapest first.
Whether you're on the M4 corridor, in Cardiff Bay, or heading out to the Valleys, knowing the cheapest station on your route makes a real difference.
How It Works
- Step 1: Search Cardiff — Enter a CF postcode to see local fuel prices.
- Step 2: See all prices — Every station ranked cheapest first.
- Step 3: Fill up for less — Head to the best-priced station.
Why Drivers Use fuelfinder.ai
- South Wales coverage — Cardiff, Newport, Bridgend, and the Valleys.
- CMA data — Official UK government prices. Reliable and up to date.
- Free — No cost, no registration, no catches.
- Mobile-first — Check prices on your phone in seconds.
Frequently Asked Questions
Where is the cheapest fuel in Cardiff?
Supermarket forecourts at retail parks tend to be cheapest. Check fuelfinder.ai for today's prices across Cardiff.
Do fuel prices differ between Cardiff and the Valleys?
Yes — areas with less competition tend to charge more. Cardiff city and its suburbs generally have more competitive pricing.
Is fuel more expensive in Wales than England?
On average, Welsh fuel prices are very similar to England. Some rural Welsh areas can be pricier due to delivery costs and less competition.