Live prices
Cheapest petrol and diesel prices in Letchworth
2 forecourts tracked in Letchworth (2 reporting unleaded (E10), 2 reporting diesel (B7), 2 reporting premium (E5), 1 reporting super diesel). Prices last refreshed at 10:02am on 20 September 2026.
The cheapest reported unleaded petrol (E10) in Letchworth is £7.72 a gallon (169.9p per litre) at Sainsbury's, Third Avenue, Letchworth. The average across 2 forecourts currently reporting this grade is £7.79 a gallon (171.4p 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 1.1p per litre below the UK average of 172.5p.
The average has risen 1.0p per litre since yesterday. The average has risen 2.5p per litre since last week.
Prices last refreshed at 10:02am on 20 September 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 Letchworth is the highest we have recorded here in 4 weeks. The Letchworth average has risen 2.5p a litre over the past week.
Unleaded Prices
Unleaded (E10)
- Highest
- £7.86/gal172.9p/L
- Average
- £7.79/gal171.4p/L
- Lowest
- £7.72/gal169.9p/L
Diesel Prices
Diesel (B7)
- Highest
- £8.91/gal195.9p/L
- Average
- £8.75/gal192.4p/L
- Lowest
- £8.59/gal188.9p/L
Premium Unleaded Prices
Premium Unleaded (E5)
- Highest
- £8.72/gal191.9p/L
- Average
- £8.50/gal186.9p/L
- Lowest
- £8.27/gal181.9p/L
Super Diesel Prices
Super Diesel (SDV)
- Highest
- £9.77/gal214.9p/L
- Average
- £9.77/gal214.9p/L
- Lowest
- £9.77/gal214.9p/L
All forecourts in Letchworth
2 forecourts in Letchworth, with live prices and full addresses. Showing 1 to 2.
Third Avenue, Letchworth · SG6 2HX
Usually cheapest 4am to 9am, priciest 11pm to midnight here
DirectionsDiesel B7
Premium E5
Norton Way North, Letchworth · SG6 1BS
Usually cheapest midnight to 5am, priciest 5pm to 10pm here
DirectionsDiesel B7
Premium E5
Super Diesel
Search near Letchworth
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Answers come straight from recorded official price data, refreshed every 30 minutes.
Cheapest reported unleaded
Sainsbury's
Third Avenue, Letchworth
169.9p/L
Cheapest reported diesel
Sainsbury's
Third Avenue, Letchworth
188.9p/L
By fuel grade in Letchworth
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 Letchworth
- What is the average petrol price in Letchworth?
- The average unleaded (E10) petrol price in Letchworth is currently 171.4p per litre (approx. £7.79/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 Letchworth?
- The average diesel (B7) price in Letchworth is currently 192.4p per litre (approx. £8.75/gal). This is based on live data from forecourts in the area, updated every 30 minutes.
- Which is the cheapest petrol station in Letchworth?
- Sainsbury's at Third Avenue, Letchworth currently has the cheapest reported unleaded petrol in Letchworth 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 Letchworth?
- According to official UK government fuel price data, Asda Icknield Way Express Petrol (SG6 1BS) currently has the highest reported unleaded (E10) price in Letchworth at 172.9p per litre (approx. £7.86/gal). Prices are refreshed every 30 minutes, so this can change through the day.
- How do I find the cheapest fuel near Letchworth?
- 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.