Live prices
Cheapest petrol and diesel prices in Weymouth
6 forecourts tracked in Weymouth (6 reporting unleaded (E10), 6 reporting diesel (B7), 6 reporting premium (E5), 4 reporting super diesel). Prices last refreshed at 6:31am on 18 September 2026.
The cheapest reported unleaded petrol (E10) in Weymouth is £7.68 a gallon (168.9p per litre) at Sainsbury's, Mercury Road, Weymouth. The average across 6 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 £1.25 on a 50-litre fill. That local average is 1.1p per litre below the UK average of 172.5p.
The average has risen 0.2p per litre since yesterday. The average has risen 4.2p per litre since last week.
Prices last refreshed at 6:31am on 18 September 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.
At 168.9p per litre, the cheapest unleaded in Weymouth is the highest we have recorded here in 4 weeks. The Weymouth average has risen 3.2p a litre over the past week.
Unleaded Prices
Unleaded (E10)
- Highest
- £7.91/gal173.9p/L
- Average
- £7.79/gal171.4p/L
- Lowest
- £7.68/gal168.9p/L
Diesel Prices
Diesel (B7)
- Highest
- £9.00/gal197.9p/L
- Average
- £8.77/gal192.9p/L
- Lowest
- £8.68/gal190.9p/L
Premium Unleaded Prices
Premium Unleaded (E5)
- Highest
- £8.63/gal189.9p/L
- Average
- £8.54/gal187.9p/L
- Lowest
- £8.45/gal185.9p/L
Super Diesel Prices
Super Diesel (SDV)
- Highest
- £9.82/gal215.9p/L
- Average
- £9.66/gal212.4p/L
- Lowest
- £9.54/gal209.9p/L
All forecourts in Weymouth
6 forecourts in Weymouth, with live prices and full addresses. Showing 1 to 6.
Mercury Road, Weymouth · DT3 5BJ
Usually cheapest midnight to 5am, priciest 11pm to midnight here
DirectionsDiesel B7
Premium E5
Diesel B7
Premium E5
King Street, Weymouth · DT4 7BJ
Usually cheapest 2am to 7am, priciest 8pm to midnight here
DirectionsDiesel B7
Premium E5
Super Diesel
Lanehouse Rocks RD, Weymouth · DT4 9DJ
Usually cheapest 8am to 1pm, priciest 4pm to 9pm here
DirectionsDiesel B7
Premium E5
Super Diesel
316-318 Dorchester Road, Weymouth, Dorset · DT3 5AS
Usually cheapest midnight to 5am, priciest 4pm to 9pm here
DirectionsDiesel B7
Premium E5
Super Diesel
Cumberland Drive, Granby Ind Estate, Weymouth, Dorset · DT4 9TB
Usually cheapest midnight to 5am, priciest 11pm to midnight here
DirectionsDiesel B7
Premium E5
Super Diesel
Search near Weymouth
Ask the fuel analyst
Answers come straight from recorded official price data, refreshed every 30 minutes.
Cheapest reported unleaded
Sainsbury's
Mercury Road, Weymouth
168.9p/L
Cheapest reported diesel
Sainsbury's
Mercury Road, Weymouth
187.9p/L
By fuel grade in Weymouth
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 Weymouth
- What is the average petrol price in Weymouth?
- The average unleaded (E10) petrol price in Weymouth is currently 171.4p per litre (approx. £7.79/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 Weymouth?
- The average diesel (B7) price in Weymouth is currently 192.9p per litre (approx. £8.77/gal). This is based on live data from forecourts in the area, updated every 30 minutes.
- Which is the cheapest petrol station in Weymouth?
- Sainsbury's at Mercury Road, Weymouth currently has the cheapest reported unleaded petrol in Weymouth at 168.9p per litre (approx. £7.68/gal). Prices change regularly, so check this page for the latest.
- Which is the most expensive petrol station in Weymouth?
- According to official UK government fuel price data, Weymouth Sf Connect (DT3 5AS) currently has the highest reported unleaded (E10) price in Weymouth 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 Weymouth?
- 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.