Live prices
Cheapest petrol and diesel prices in Mountain Ash
2 forecourts tracked in Mountain Ash (2 reporting unleaded (E10), 2 reporting diesel (B7), 1 reporting premium (E5)). Prices last refreshed at 10:31pm on 30 July 2026.
The cheapest reported unleaded petrol (E10) in Mountain Ash is 156.9p per litre at ESSO, CARDIFF ROAD, MOUNTAIN ASH, MID GLAMORGAN. The average across 2 forecourts currently reporting this grade is 158.4p 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 1.4p per litre below the UK average of 159.8p.
The average has risen 0.5p per litre since yesterday. The average has risen 2.5p per litre since last week.
Prices last refreshed at 10:31pm on 30 July 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.
Unleaded Prices
Unleaded (E10)
- Highest
- 159.9p/lapprox. £7.27/gal
- Average
- 158.4p/lapprox. £7.20/gal
- Lowest
- 156.9p/lapprox. £7.13/gal
Diesel Prices
Diesel (B7)
- Highest
- 179.9p/lapprox. £8.18/gal
- Average
- 178.4p/lapprox. £8.11/gal
- Lowest
- 176.9p/lapprox. £8.04/gal
Premium Unleaded Prices
Premium Unleaded (E5)
- Highest
- 175.9p/lapprox. £8.00/gal
- Average
- 175.9p/lapprox. £8.00/gal
- Lowest
- 175.9p/lapprox. £8.00/gal
Super Diesel Prices
Super Diesel (SDV)
Not enough current price data.
All forecourts in Mountain Ash
ESSO
CARDIFF ROAD, MOUNTAIN ASH, MID GLAMORGAN · CF45 4HT
Usually cheapest midnight to 5am, priciest 1pm to 4pm here
Directions156.9p/L
approx. £7.13/gal
Diesel B7
176.9p
approx. £8.04/gal
Premium E5
175.9p
approx. £8.00/gal
MURCO
MAIN ROAD, YNYSBOETH, ABERCYNON,, MOUNTAIN ASH, MID GLAMORGAN · CF45 4LJ
Usually cheapest 2am to 7am, priciest 5pm to 10pm here
Directions159.9p/L
approx. £7.27/gal
Diesel B7
179.9p
approx. £8.18/gal
Search near Mountain Ash
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Answers come straight from recorded official price data, refreshed every 30 minutes.
Cheapest reported unleaded
ESSO
CARDIFF ROAD, MOUNTAIN ASH, MID GLAMORGAN
156.9p/L
Cheapest reported diesel
ESSO
CARDIFF ROAD, MOUNTAIN ASH, MID GLAMORGAN
176.9p/L
By fuel grade in Mountain Ash
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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 Mountain Ash
- What is the average petrol price in Mountain Ash?
- The average unleaded (E10) petrol price in Mountain Ash is currently 158.4p per litre (approx. £7.20/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 Mountain Ash?
- The average diesel (B7) price in Mountain Ash is currently 178.4p per litre (approx. £8.11/gal). This is based on live data from forecourts in the area, updated every 30 minutes.
- Which is the cheapest petrol station in Mountain Ash?
- ESSO at CARDIFF ROAD, MOUNTAIN ASH, MID GLAMORGAN currently has the cheapest reported unleaded petrol in Mountain Ash at 156.9p per litre (approx. £7.13/gal). Prices change regularly, so check this page for the latest.
- Which is the most expensive petrol station in Mountain Ash?
- According to official UK government fuel price data, MURCO (CF45 4LJ) currently has the highest reported unleaded (E10) price in Mountain Ash at 159.9p per litre (approx. £7.27/gal). Prices are refreshed every 30 minutes, so this can change through the day.
- How do I find the cheapest fuel near Mountain Ash?
- 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.