Live prices
Cheapest petrol and diesel prices in Monmouth
3 forecourts tracked in Monmouth (3 reporting unleaded (E10), 3 reporting diesel (B7), 3 reporting premium (E5), 3 reporting super diesel). Prices last refreshed at 6:02am on 20 September 2026.
The cheapest reported unleaded petrol (E10) in Monmouth is £8.18 a gallon (179.9p per litre) at Shell, Cinderhill Street Overmonnow Road, Monmouth, Gwent. The average across 3 forecourts currently reporting this grade is £8.33 a gallon (183.2p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £1.65 on a 50-litre fill. That local average is 10.7p per litre above the UK average of 172.5p.
The average is unchanged since yesterday. The average has risen 5.0p per litre since last week.
Prices last refreshed at 6:02am on 20 September 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.
At 179.9p per litre, the cheapest unleaded in Monmouth is the highest we have recorded here in 4 weeks. The Monmouth average has risen 5.0p a litre over the past week.
Unleaded Prices
Unleaded (E10)
- Highest
- £8.41/gal184.9p/L
- Average
- £8.33/gal183.2p/L
- Lowest
- £8.41/gal184.9p/L
Diesel Prices
Diesel (B7)
- Highest
- £9.18/gal201.9p/L
- Average
- £9.15/gal201.2p/L
- Lowest
- £9.09/gal199.9p/L
Premium Unleaded Prices
Premium Unleaded (E5)
- Highest
- £9.31/gal204.9p/L
- Average
- £9.28/gal204.2p/L
- Lowest
- £9.27/gal203.9p/L
Super Diesel Prices
Super Diesel (SDV)
- Highest
- £10.04/gal220.9p/L
- Average
- £10.10/gal222.2p/L
- Lowest
- £10.04/gal220.9p/L
All forecourts in Monmouth
3 forecourts in Monmouth, with live prices and full addresses. Showing 1 to 3.
Cinderhill Street Overmonnow Road, Monmouth, Gwent · NP25 5EZ
Usually cheapest midnight to 5am, priciest 5pm to 10pm here
DirectionsDiesel B7
Premium E5
Super Diesel
A40 North Bound, Dingestow, Monmouth · NP25 4BG
Usually cheapest midnight to 5am, priciest 8pm to midnight here
DirectionsDiesel B7
Premium E5
Super Diesel
A40 South Bound, Dingestow, Monmouth · NP25 4BR
Usually cheapest midnight to 5am, priciest 8pm to midnight here
DirectionsDiesel B7
Premium E5
Super Diesel
Search near Monmouth
Ask the fuel analyst
Answers come straight from recorded official price data, refreshed every 30 minutes.
Cheapest reported unleaded
Shell
Cinderhill Street Overmonnow Road, Monmouth, Gwent
179.9p/L
Cheapest reported diesel
Shell
Cinderhill Street Overmonnow Road, Monmouth, Gwent
199.9p/L
By fuel grade in Monmouth
Nearby areas
Save more as a driver
Prices are sourced from official UK government fuel-price data (Open Government Licence v3.0). Updated every 30 minutes.
Questions about fuel prices in Monmouth
- What is the average petrol price in Monmouth?
- The average unleaded (E10) petrol price in Monmouth is currently 183.2p per litre (approx. £8.33/gal), based on live data from 3 forecourts reporting this grade. Prices are updated every 30 minutes from official UK government data.
- What is the average diesel price in Monmouth?
- The average diesel (B7) price in Monmouth is currently 201.2p per litre (approx. £9.15/gal). This is based on live data from forecourts in the area, updated every 30 minutes.
- Which is the cheapest petrol station in Monmouth?
- Shell at Cinderhill Street Overmonnow Road, Monmouth, Gwent currently has the cheapest reported unleaded petrol in Monmouth at 179.9p per litre (approx. £8.18/gal). Prices change regularly, so check this page for the latest.
- Which is the most expensive petrol station in Monmouth?
- According to official UK government fuel price data, Asda Monmouth South Express Petrol (NP25 4BR) currently has the highest reported unleaded (E10) price in Monmouth at 184.9p per litre (approx. £8.41/gal). Prices are refreshed every 30 minutes, so this can change through the day.
- How do I find the cheapest fuel near Monmouth?
- 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.