Weekly bulletin, 28 September to 4 October 2026. Published Monday 5 October 2026.
Petrol prices in Dorchester: up 1.0p this week to 175.6p
Between Monday 28 September 2026 and Sunday 4 October 2026, the average price of unleaded across 3 filling stations in Dorchester rose 1.0p to 175.6p a litre, while diesel held at 199.9p.
Cheapest and most expensive
On Sunday 4 October 2026, prices updated within 30 days, judged against their neighbours.
The last 30 days
Daily averages, in pence per litre. Right-click the image to save it; it is free to publish with a link.
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The weekly change compares the same 1 filling station with an unleaded price on both days, so a station dropping out of the figures does not move it.
3 of the 7 stations seen during the week changed at least one price.
The cheapest unleaded in Dorchester on Sunday 4 October 2026 was 174.9p at Shell Dorchester, Dorchester (DT1 1NF); the most expensive was 177.9p at Long Ash Service Station Ltd, Dorchester (DT2 9NW), a gap of 3.0p, or £1.50 on a 50-litre tank.
The cheapest diesel was 199.9p at Maiden Newton Service Station, Dorchester (DT2 0BA).
Across the UK, unleaded was up 0.7p over the same week, at 174.7p, which puts Dorchester 0.9p above the national average.
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Petrol prices in Dorchester: up 1.0p this week to 175.6p Between Monday 28 September 2026 and Sunday 4 October 2026, the average price of unleaded across 3 filling stations in Dorchester rose 1.0p to 175.6p a litre, while diesel held at 199.9p. The weekly change compares the same 1 filling station with an unleaded price on both days, so a station dropping out of the figures does not move it. 3 of the 7 stations seen during the week changed at least one price. The cheapest unleaded in Dorchester on Sunday 4 October 2026 was 174.9p at Shell Dorchester, Dorchester (DT1 1NF); the most expensive was 177.9p at Long Ash Service Station Ltd, Dorchester (DT2 9NW), a gap of 3.0p, or £1.50 on a 50-litre tank. The cheapest diesel was 199.9p at Maiden Newton Service Station, Dorchester (DT2 0BA). Across the UK, unleaded was up 0.7p over the same week, at 174.7p, which puts Dorchester 0.9p above the national average. Source: fuelpricetoday.co.uk, weekly bulletin for Dorchester, 28 September to 4 October 2026. https://fuelpricetoday.co.uk/press/2026-W40/town-dorchester Prices are pence per litre, computed from the government's Fuel Finder open data. Free to use with a link to the source.
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- Every station (CSV)
Name, brand, postcode, coordinates, unleaded and diesel on 28 Sep and 4 Oct.
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All the figures on this page, with the 30-day series.
- The chart (PNG)
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Terms of use
Free to use, quote and publish, including the chart and the data, with a link to https://fuelpricetoday.co.uk/press/2026-W40/town-dorchester or a credit to fuelpricetoday.co.uk. Prices are computed from the Fuel Finder open data published by the Department for Energy Security and Net Zero under the Open Government Licence v3.0. Questions, a figure for another area, or a quote: contact@fuelpricetoday.co.uk.
How the figures are computed
Each average is the mean of the prices changed in the last 7 days at the filling stations of Dorchester, motorway services left out and prices more than 25p from the day's median discarded. The cheapest and most expensive stations are judged against the stations within 10 km, so that a typing error cannot top the list. The week runs from Monday to Sunday. Details on how this site works.