Live prices
Cheapest petrol and diesel prices in Caernarfon
6 forecourts tracked in Caernarfon (6 reporting unleaded (E10), 6 reporting diesel (B7), 3 reporting premium (E5)). Prices last refreshed at 8:33pm on 4 November 2026.
The cheapest reported unleaded petrol (E10) in Caernarfon is £7.72 a gallon (169.9p per litre) at Essar, London Garage Ltd, Cwm-y-glo, Caernarfon, LL55 4DE, Caernarfon. The average across 6 forecourts currently reporting this grade is £7.80 a gallon (171.5p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £0.80 on a 50-litre fill. That local average is 0.5p per litre above the UK average of 171.0p.
The average is unchanged since yesterday. The average is unchanged since last week.
Prices last refreshed at 8:33pm on 4 November 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.
At 169.9p per litre, the cheapest unleaded in Caernarfon is the highest we have recorded here in 4 weeks. The Caernarfon average has held steady over the past week.
Unleaded Prices
Unleaded (E10)
- Highest
- £7.91/gal173.9p/L
- Average
- £7.80/gal171.5p/L
- Lowest
- £7.72/gal169.9p/L
Diesel Prices
Diesel (B7)
- Highest
- £9.09/gal199.9p/L
- Average
- £8.98/gal197.5p/L
- Lowest
- £8.91/gal195.9p/L
Premium Unleaded Prices
Premium Unleaded (E5)
- Highest
- £8.45/gal185.9p/L
- Average
- £8.48/gal186.6p/L
- Lowest
- £8.36/gal183.9p/L
Super Diesel Prices
Super Diesel (SDV)
Not enough current price data.
All forecourts in Caernarfon
6 forecourts in Caernarfon, with live prices and full addresses. Showing 1 to 6.
Modurdy Dolydd Garage, Dolydd, Caernarfon, LL54 7EF, Caernarfon · LL54 7EF
DirectionsDiesel B7
Premium E5
London Garage Ltd, Cwm-y-glo, Caernarfon, LL55 4DE, Caernarfon · LL55 4DE
DirectionsDiesel B7
Diesel B7
Premium E5
Caer Service Station, South Road, Caernarfon, LL55 2HP, Caernarfon · LL55 2HP
DirectionsDiesel B7
Gwalia Garage Ltd, Caeathro, Caernarfon, LL55 2SS, Caernarfon · LL55 2SS
DirectionsDiesel B7
Premium E5
Diesel B7
Search near Caernarfon
Ask the fuel analyst
Answers come straight from recorded official price data, refreshed every 30 minutes.
Cheapest reported unleaded
Essar
London Garage Ltd, Cwm-y-glo, Caernarfon, LL55 4DE, Caernarfon
169.9p/L
Cheapest reported diesel
Texaco
Modurdy Dolydd Garage, Dolydd, Caernarfon, LL54 7EF, Caernarfon
195.9p/L
By fuel grade in Caernarfon
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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 Caernarfon
- What is the average petrol price in Caernarfon?
- The average unleaded (E10) petrol price in Caernarfon is currently 171.5p per litre (approx. £7.80/gal), based on live data from 6 forecourts reporting this grade. Prices are updated every 30 minutes from official UK government data.
- What is the average diesel price in Caernarfon?
- The average diesel (B7) price in Caernarfon is currently 197.5p per litre (approx. £8.98/gal). This is based on live data from forecourts in the area, updated every 30 minutes.
- Which is the cheapest petrol station in Caernarfon?
- Essar at London Garage Ltd, Cwm-y-glo, Caernarfon, LL55 4DE, Caernarfon currently has the cheapest reported unleaded petrol in Caernarfon at 169.9p per litre (approx. £7.72/gal). Prices change regularly, so check this page for the latest.
- Which is the most expensive petrol station in Caernarfon?
- According to official UK government fuel price data, Beran Filling Station (LL55 3NF) currently has the highest reported unleaded (E10) price in Caernarfon at 173.9p per litre (approx. £7.91/gal). Prices are refreshed every 30 minutes, so this can change through the day.
- How do I find the cheapest fuel near Caernarfon?
- 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.