Petrol prices in DT3
Every forecourt in the DT3, Dorchester postcode district, cheapest first, with live prices from the government Fuel Finder feed — covering Dorset, South West.
Petrol stations in DT3 (3)
Cheapest first. Prices update through the day.
SAINSBURYS, WEYMOUTHCheapestWEYMOUTH£1.68E10£1.88B7MORRISONS, WEYMOUTHWEYMOUTH£1.69E10£1.92B7BP, WEYMOUTHWEYMOUTH£1.73E10£1.92B75.0p separates the cheapest and dearest forecourt inside DT3 alone — £2.75 on a tank, without leaving the district. That is usually a bigger saving than any amount of waiting for prices to move.
Is anywhere nearby cheaper?
Neighbouring districts, with the fuel the drive itself burns already subtracted — a 45 mpg car, there and back.
Not today. Of the 8 nearest districts, none is cheap enough to cover the fuel the drive itself would burn — the £1.68already available inside DT3 wins. That is the common case, and it is why chasing a cheaper sign a few miles away usually costs more than it saves — the break-even calculation shows where the line falls.
Nearby postcode districts
Closest first, with today’s typical price.
About fuel prices in DT3
DT3 is part of the DT postcode area, which covers Dorchester, and its forecourts sit mainly in Dorset in South West. We track 3 forecourts here across 3 brands, of which 2 are supermarkets.
Supermarket forecourts usually anchor local pricing: where one exists, the independents nearby tend to price close to it, and where none does, prices drift upward. DT3 has 2, which is why the local spread is 5.0p. Across South West as a whole the median is £1.70 — see the whole region.
Every price here comes from the government Fuel Finder scheme, which since February 2026 has required each forecourt to report a change within thirty minutes. For the forecourts nearest a specific address rather than a whole district, search your full postcode.
Common questions about DT3
How much is petrol in DT3 today?
The typical DT3 forecourt is charging £1.69 a litre for E10 petrol — £92.89 for a 55-litre tank. The cheapest of the 3 forecourts reporting a price in DT3 is at £1.68, and the dearest £1.73.
Where is the cheapest petrol in DT3?
SAINSBURYS, WEYMOUTH in WEYMOUTH at £1.68 a litre. That is 5.0p below the dearest forecourt in DT3. Prices change through the day, so check before you set off.
Is DT3 cheaper or dearer than the rest of the UK?
DT3 runs 1.0p below the UK median of £1.70, and sits in South West, where the regional median is £1.70. Local competition drives most of that: districts with two or more supermarket forecourts close together price lower than districts where the nearest alternative is a drive away.
Is it worth driving to a cheaper postcode from DT3?
Not on today's prices. No neighbouring district is cheap enough to cover the fuel the detour itself would burn, so the best price available to you is inside DT3.
How many petrol stations are there in DT3?
3 forecourts, from 3 different brands, including 2 supermarket forecourts. Every one reports its prices to the government Fuel Finder scheme within thirty minutes of a change.