Live prices
Cheapest petrol and diesel prices in Porth
2 forecourts tracked in Porth (2 reporting unleaded (E10), 2 reporting diesel (B7), 2 reporting premium (E5), 1 reporting super diesel). Prices last refreshed at 3:31am on 18 September 2026.
The cheapest reported unleaded petrol (E10) in Porth is £7.86 a gallon (172.9p per litre) at Valero, North Road, Porth, Rhondda. The average across 2 forecourts currently reporting this grade is £7.93 a gallon (174.4p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £0.75 on a 50-litre fill. That local average is 1.9p per litre above the UK average of 172.5p.
The average has risen 1.5p per litre since yesterday. The average has risen 7.0p per litre since last week.
Prices last refreshed at 3:31am on 18 September 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.
At 172.9p per litre, the cheapest unleaded in Porth is the highest we have recorded here in 4 weeks. The Porth average has risen 5.0p a litre over the past week.
Unleaded Prices
Unleaded (E10)
- Highest
- £8.00/gal175.9p/L
- Average
- £7.93/gal174.4p/L
- Lowest
- £7.86/gal172.9p/L
Diesel Prices
Diesel (B7)
- Highest
- £9.09/gal199.9p/L
- Average
- £9.04/gal198.9p/L
- Lowest
- £9.00/gal197.9p/L
Premium Unleaded Prices
Premium Unleaded (E5)
- Highest
- £8.81/gal193.9p/L
- Average
- £8.63/gal189.9p/L
- Lowest
- £8.45/gal185.9p/L
Super Diesel Prices
Super Diesel (SDV)
- Highest
- £9.91/gal217.9p/L
- Average
- £9.91/gal217.9p/L
- Lowest
- £9.91/gal217.9p/L
All forecourts in Porth
2 forecourts in Porth, with live prices and full addresses. Showing 1 to 2.
North Road, Porth, Rhondda · CF39 9SH
Usually cheapest midnight to 5am, priciest 2pm to 7pm here
DirectionsDiesel B7
Premium E5
Mill Street, Tonyrefail, Porth, Rhondda Cynon Taf · CF39 8AF
Usually cheapest midnight to 5am, priciest 10am to 3pm here
DirectionsDiesel B7
Premium E5
Super Diesel
Search near Porth
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Answers come straight from recorded official price data, refreshed every 30 minutes.
Cheapest reported unleaded
Valero
North Road, Porth, Rhondda
172.9p/L
Cheapest reported diesel
Valero
North Road, Porth, Rhondda
197.9p/L
By fuel grade in Porth
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 Porth
- What is the average petrol price in Porth?
- The average unleaded (E10) petrol price in Porth is currently 174.4p per litre (approx. £7.93/gal), based on live data from 2 forecourts reporting this grade. Prices are updated every 30 minutes from official UK government data.
- What is the average diesel price in Porth?
- The average diesel (B7) price in Porth is currently 198.9p per litre (approx. £9.04/gal). This is based on live data from forecourts in the area, updated every 30 minutes.
- Which is the cheapest petrol station in Porth?
- Valero at North Road, Porth, Rhondda currently has the cheapest reported unleaded petrol in Porth at 172.9p per litre (approx. £7.86/gal). Prices change regularly, so check this page for the latest.
- Which is the most expensive petrol station in Porth?
- According to official UK government fuel price data, Tonyrefail Service Station (CF39 8AF) currently has the highest reported unleaded (E10) price in Porth at 175.9p per litre (approx. £8.00/gal). Prices are refreshed every 30 minutes, so this can change through the day.
- How do I find the cheapest fuel near Porth?
- 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.