Live prices
Cheapest petrol and diesel prices in Cardiff
23 forecourts tracked in Cardiff (23 reporting unleaded (E10), 23 reporting diesel (B7), 16 reporting premium (E5), 8 reporting super diesel). Prices last refreshed at 12:02am on 19 October 2026.
The cheapest reported unleaded petrol (E10) in Cardiff is £7.81 a gallon (171.7p per litre) at Asda, Capital Retail Park-leckwith Road, Cardiff. The average across 23 forecourts currently reporting this grade is £7.92 a gallon (174.2p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £1.25 on a 50-litre fill.
The average is unchanged since yesterday. The average has fallen 0.5p per litre since last week.
Prices last refreshed at 12:02am on 19 October 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.
Over the past 4 weeks the cheapest unleaded in Cardiff has ranged between 131.7p and 171.9p per litre. The Cardiff average has fallen 0.5p a litre over the past week.
Unleaded Prices
Unleaded (E10)
- Highest
- £8.04/gal176.9p/L
- Average
- £7.92/gal174.2p/L
- Lowest
- £7.81/gal171.7p/L
Diesel Prices
Diesel (B7)
- Highest
- £9.27/gal203.9p/L
- Average
- £9.06/gal199.4p/L
- Lowest
- £8.94/gal196.7p/L
Premium Unleaded Prices
Premium Unleaded (E5)
- Highest
- £8.95/gal196.9p/L
- Average
- £8.66/gal190.4p/L
- Lowest
- £8.31/gal182.9p/L
Super Diesel Prices
Super Diesel (SDV)
- Highest
- £10.18/gal223.9p/L
- Average
- £9.95/gal218.8p/L
- Lowest
- £9.95/gal218.9p/L
All forecourts in Cardiff
23 forecourts in Cardiff, with live prices and full addresses. Showing 16 to 23.
Diesel B7
Premium E5
Diesel B7
Premium E5
Super Diesel
Diesel B7
Premium E5
Super Diesel
Three Arches Services Ltd, Heathwood Road, Cardiff, CF14 4HT, Cardiff · CF14 4HT
DirectionsDiesel B7
ST. Mellons Service Station, Newport Road, Old ST. Mellons, Cardiff · CF3 5UG
Usually cheapest midnight to 5am, priciest 9am to 2pm here
DirectionsDiesel B7
Premium E5
Diesel B7
Premium E5
Super Diesel
Diesel B7
Premium E5
Diesel B7
Premium E5
Search near Cardiff
Ask the fuel analyst
Answers come straight from recorded official price data, refreshed every 30 minutes.
Cheapest reported unleaded
Asda
Capital Retail Park-leckwith Road, Cardiff
171.7p/L
Cheapest reported diesel
Asda
Capital Retail Park-leckwith Road, Cardiff
196.7p/L
By fuel grade in Cardiff
Nearby areas
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Prices are sourced from official UK government fuel-price data (Open Government Licence v3.0). Updated every 30 minutes.
Questions about fuel prices in Cardiff
- What is the average petrol price in Cardiff?
- The average unleaded (E10) petrol price in Cardiff is currently 174.2p per litre (approx. £7.92/gal), based on live data from 23 forecourts reporting this grade. Prices are updated every 30 minutes from official UK government data.
- What is the average diesel price in Cardiff?
- The average diesel (B7) price in Cardiff is currently 199.4p per litre (approx. £9.06/gal). This is based on live data from forecourts in the area, updated every 30 minutes.
- Which is the cheapest petrol station in Cardiff?
- Asda at Capital Retail Park-leckwith Road, Cardiff currently has the cheapest reported unleaded petrol in Cardiff at 171.7p per litre (approx. £7.81/gal). Prices change regularly, so check this page for the latest.
- Which is the most expensive petrol station in Cardiff?
- According to official UK government fuel price data, Asda Llantrisant Express Petrol (CF5 2PW) currently has the highest reported unleaded (E10) price in Cardiff at 176.9p per litre (approx. £8.04/gal). Prices are refreshed every 30 minutes, so this can change through the day.
- How do I find the cheapest fuel near Cardiff?
- Use the search box above to enter your postcode. fuel.co.uk will show you every forecourt ranked cheapest first, with live prices updated every 30 minutes from the GOV.UK Fuel Finder.