Updated 1 wk ago

Cheapest petrol in
Carmarthen · 7 stations

Prices across 7 petrol stations in Carmarthenshire. The cheapest unleaded E10 right now is 151.9p/L at Murco Derwydd Services — 1.9p below the Carmarthen average.

Cheapest E10

151.9p

Murco · SA33

Carmarthen average

153.8p

across 7 stations

VS UK average

−1.4p

UK 155.3p

Last updated

1 wk

gov.uk feed

Fuel prices

Updated 7 hr ago

Reported to the gov.uk CMA Road Fuel Price Transparency scheme.

Unleaded (E10)Unleaded Petrol

151.9p/L

£40 buys · 26.3L

Super Unleaded (E5)Super Unleaded Petrol

159.5p/L

£40 buys · 25.1L

Diesel (B7)Standard Diesel

163.9p/L

£40 buys · 24.4L

Prices as of 7 hr ago. Pump prices may vary.

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All 7 stations in Carmarthen — ranked by E10 price

Showing 7 of 7

#	Station	District	Distance	E10	E5	B7	Updated
1	Murco Derwydd ServicesCheapest Derwydd Garage, SA33 6TP	SA33	3.8 mi	151.9p	177.9p	167.9p	11d ago
2	Murco Tanerdy Garage Tanerdy Garage, SA31 2EY	SA31	0.9 mi	151.9p	159.5p	163.9p	1d ago
3	Murco Gwalia Garage Gwalia Garage, SA32 7DR	SA32	2.9 mi	151.9p	159.5p	163.9p	1d ago
4	Valero Ascona Tenby Road Service Station Lysonnen Road, SA33 5DT	SA33	3.1 mi	153.9p	189.9p	168.9p	7h ago
5	Morrisons Mfg Morrisons Carmarthen Parc Pensarn, SA31 2NF	SA31	1.9 mi	153.9p	165.9p	165.9p	19h ago
6	Esso Asda White Mill Express Petrol A40, Carmarthen, SA32 7EN	SA32	3.3 mi	155.9p	—	181.9p	6d ago
7	Murco Cks Supermarket C K's Supermarket, SA31 3HL	SA31	1.6 mi	156.9p	—	177.9p	8d ago

Murco Derwydd ServicesCheapest

Derwydd Garage, SA33 6TP · 3.8 mi

E5 177.9pB7 167.9p

151.9p

11d ago

view →

Murco Tanerdy Garage

Tanerdy Garage, SA31 2EY · 0.9 mi

E5 159.5pB7 163.9p

151.9p

1d ago

view →

Murco Gwalia Garage

Gwalia Garage, SA32 7DR · 2.9 mi

E5 159.5pB7 163.9p

151.9p

1d ago

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Valero Ascona Tenby Road Service Station

Lysonnen Road, SA33 5DT · 3.1 mi

E5 189.9pB7 168.9p

153.9p

7h ago

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Morrisons Mfg Morrisons Carmarthen

Parc Pensarn, SA31 2NF · 1.9 mi

E5 165.9pB7 165.9p

153.9p

19h ago

view →

Esso Asda White Mill Express Petrol

A40, Carmarthen, SA32 7EN · 3.3 mi

B7 181.9p

155.9p

6d ago

view →

Murco Cks Supermarket

C K's Supermarket, SA31 3HL · 1.6 mi

B7 177.9p

156.9p

8d ago

view →

Prices sourced from the gov.uk Road Fuel Price Transparency scheme. Last fetched 16 Jun, 12:23. Click any station for hours, facilities, payment, reviews and 14-day price history.

Browse by Carmarthen postcode district

3 districts cover the place — each links to its own postcode page.

Brands operating in Carmarthen

About petrol prices in Carmarthen

Carmarthen is a city in Carmarthenshire, served by 7 petrol stations spread across 3 postcode districts.

Unleaded E10 currently averages 153.8p per litre in Carmarthen, which is 1.5p below the UK average of 155.3p. Supermarket forecourts tend to offer the lowest prices in most towns. Out-of-town sites are typically 4–6p cheaper than city-centre forecourts.

Filling a 55-litre tank at the cheapest Carmarthen station today saves around £1.02 compared with the Carmarthen average — roughly £32 a year for a driver covering 12,000 miles.

Frequently asked questions

Q.Where is the cheapest petrol in Carmarthen today?

Murco Derwydd Services on Derwydd Garage is currently cheapest at 151.9p per litre for unleaded E10 — that's 1.9p below the Carmarthen average and 3.3p below the UK average.

Q.How many petrol stations does this page cover?

We track all 7 petrol stations inside the Carmarthen boundary, across 3 postcode districts. The list is ranked by E10 price.

Q.Are supermarket forecourts always the cheapest?

Usually, yes. Supermarket forecourts (Asda, Tesco, Sainsbury's, Morrisons) tend to lead the cheapest rankings in most UK towns. Membership-only forecourts such as Costco can be cheaper still for eligible drivers.

Q.How often are prices refreshed?

Prices come from the the UK Government CMA Road Fuel Price Transparency Scheme. Data on this site aims to be refreshed daily. The most recent reading on this page is from 7 hr ago.