Live prices
Cheapest petrol and diesel prices in Dorchester
6 forecourts tracked in Dorchester (5 reporting unleaded (E10), 6 reporting diesel (B7), 5 reporting premium (E5), 3 reporting super diesel). Prices last refreshed at 10:31pm on 18 October 2026.
The cheapest reported unleaded petrol (E10) in Dorchester is £7.95 a gallon (174.9p per litre) at Tesco, Weymouth Ave, Dorchester. The average across 5 forecourts currently reporting this grade is £8.05 a gallon (177.1p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £1.10 on a 50-litre fill. That local average is 2.9p per litre above the UK average of 174.2p.
The average has risen 0.8p per litre since yesterday. The average has risen 1.0p per litre since last week.
Prices last refreshed at 10:31pm on 18 October 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.
At 174.9p per litre, the cheapest unleaded in Dorchester is the highest we have recorded here in 4 weeks. The Dorchester average has risen 1.0p a litre over the past week.
Unleaded Prices
Unleaded (E10)
- Highest
- £8.13/gal178.9p/L
- Average
- £8.05/gal177.1p/L
- Lowest
- £7.95/gal174.9p/L
Diesel Prices
Diesel (B7)
- Highest
- £9.09/gal199.9p/L
- Average
- £9.09/gal199.9p/L
- Lowest
- £9.09/gal199.9p/L
Premium Unleaded Prices
Premium Unleaded (E5)
- Highest
- £8.91/gal195.9p/L
- Average
- £8.80/gal193.5p/L
- Lowest
- £8.45/gal185.9p/L
Super Diesel Prices
Super Diesel (SDV)
- Highest
- £10.00/gal219.9p/L
- Average
- £10.07/gal221.6p/L
- Lowest
- £10.00/gal219.9p/L
All forecourts in Dorchester
6 forecourts in Dorchester, with live prices and full addresses. Showing 1 to 6.
Weymouth Ave, Dorchester · DT1 2RY
Usually cheapest midnight to 5am, priciest 5pm to 10pm here
DirectionsDiesel B7
Premium E5
Maiden Newton Service Station, Dorchester Road, Maiden Newton, Dorchester, DT2 0BA, Dorchester · DT2 0BA
DirectionsDiesel B7
Premium E5
Super Diesel
Diesel B7
Premium E5
Super Diesel
Long Ash Service Station, Frampton, Dorchester, DT2 9NW, Dorchester · DT2 9NW
DirectionsDiesel B7
Diesel B7
Premium E5
Super Diesel
Rampisham Garage, Rampisham Down, Dorchester, DT2 0HT, Dorchester · DT2 0HT
DirectionsNo unleaded e10 price
Diesel B7
Premium E5
Search near Dorchester
Ask the fuel analyst
Answers come straight from recorded official price data, refreshed every 30 minutes.
Cheapest reported unleaded
Tesco
Weymouth Ave, Dorchester
174.9p/L
Cheapest reported diesel
Tesco
Weymouth Ave, Dorchester
199.9p/L
By fuel grade in Dorchester
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 Dorchester
- What is the average petrol price in Dorchester?
- The average unleaded (E10) petrol price in Dorchester is currently 177.1p per litre (approx. £8.05/gal), based on live data from 5 forecourts reporting this grade. Prices are updated every 30 minutes from official UK government data.
- What is the average diesel price in Dorchester?
- The average diesel (B7) price in Dorchester is currently 199.9p per litre (approx. £9.09/gal). This is based on live data from forecourts in the area, updated every 30 minutes.
- Which is the cheapest petrol station in Dorchester?
- Tesco at Weymouth Ave, Dorchester currently has the cheapest reported unleaded petrol in Dorchester at 174.9p per litre (approx. £7.95/gal). Prices change regularly, so check this page for the latest.
- Which is the most expensive petrol station in Dorchester?
- According to official UK government fuel price data, Shell Dorchester (DT1 1NF) currently has the highest reported unleaded (E10) price in Dorchester at 178.9p per litre (approx. £8.13/gal). Prices are refreshed every 30 minutes, so this can change through the day.
- How do I find the cheapest fuel near Dorchester?
- 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.