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 10:31am on 25 August 2026.
The cheapest reported unleaded petrol (E10) in Cardiff is £7.26 a gallon (159.7p per litre) at Asda, Longwood Drive, Coryton Roundabout, Cardiff. The average across 23 forecourts currently reporting this grade is £7.36 a gallon (162.0p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £1.15 on a 50-litre fill. That local average is 0.4p per litre above the UK average of 161.6p.
The average is unchanged since yesterday. The average has fallen 0.3p per litre since last week.
Prices last refreshed at 10:31am on 25 August 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.
At 159.7p per litre, the cheapest unleaded in Cardiff is the highest we have recorded here in 4 weeks. The Cardiff average has held steady over the past week.
Unleaded Prices
Unleaded (E10)
- Highest
- £7.50/gal164.9p/L
- Average
- £7.36/gal162.0p/L
- Lowest
- £7.26/gal159.7p/L
Diesel Prices
Diesel (B7)
- Highest
- £8.45/gal185.9p/L
- Average
- £8.26/gal181.7p/L
- Lowest
- £8.12/gal178.7p/L
Premium Unleaded Prices
Premium Unleaded (E5)
- Highest
- £8.41/gal184.9p/L
- Average
- £8.09/gal178.0p/L
- Lowest
- £7.72/gal169.9p/L
Super Diesel Prices
Super Diesel (SDV)
- Highest
- £9.36/gal205.9p/L
- Average
- £9.05/gal199.0p/L
- Lowest
- £9.09/gal199.9p/L
All forecourts in Cardiff
23 forecourts in Cardiff, with live prices and full addresses. Showing 16 to 23.
Hadfield Road, Cardiff, Glamorgan · CF11 8WD
Usually cheapest midnight to 5am, priciest noon to 5pm here
DirectionsDiesel 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 10am to 3pm here
DirectionsDiesel B7
Premium E5
Cathedral Road, Cardiff, South Glamorgan · CF11 9HA
Usually cheapest midnight to 5am, priciest 1pm to 6pm here
DirectionsDiesel B7
Super Diesel
Cowbridge Road East, Cardiff, Mid Glamorgan · CF5 1BP
Usually cheapest midnight to 5am, priciest 1pm to 6pm here
DirectionsDiesel B7
Premium E5
Super Diesel
Diesel B7
Premium E5
Super Diesel
Llantrisant Road, Llandaff, Cardiff · CF5 2PW
Usually cheapest midnight to 5am, priciest noon to 5pm here
DirectionsDiesel B7
Premium E5
Llantrisant Road, Cardiff · CF5 2PY
Usually cheapest midnight to 5am, priciest 9pm to midnight here
DirectionsDiesel 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
Longwood Drive, Coryton Roundabout, Cardiff
159.7p/L
Cheapest reported diesel
Tivoli Service Station
Tivoli Service Station, 14, Station Road, Llandaff North, Cardiff
174.9p/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 162.0p per litre (approx. £7.36/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 181.7p per litre (approx. £8.26/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 Longwood Drive, Coryton Roundabout, Cardiff currently has the cheapest reported unleaded petrol in Cardiff at 159.7p per litre (approx. £7.26/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 164.9p per litre (approx. £7.50/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.