Fuel Price Today

Petrol prices in Carmarthen

7 filling stations in Carmarthen, Wales. Cheapest unleaded first. Prices that have not changed recently are listed after the others.

Cheapest unleaded
168.9punchanged since 20 Oct
Gwalia Garage
Carmarthen average
170.4p
£85.20 for 50 litres
Against the UK average
−2.5p
UK average 172.9p

Of the 170.4p average for unleaded in Carmarthen, 52.95p is fuel duty and 28.40p is VAT. Each penny of duty costs 1.2p at the pump once VAT is added: see what a change in fuel duty would cost.

Every filling station in Carmarthen

Go
Gwalia GarageCheapest
MURCO · SA32 7DR
168.9punchanged since 20 Oct194.9punchanged since 14 Oct178.5p⚠ unchanged since 19 Sep206.5punchanged since 26 SepMapsWaze
Tanerdy Garage
MURCO · SA31 2EY
168.9punchanged since 20 Oct194.9punchanged since 14 Oct179.5punchanged since 26 Sep205.5punchanged since 26 SepMapsWaze
Ascona Tenby Road Service Station
VALERO · SA33 5DT
169.9p23 hours ago196.9punchanged since 20 Oct199.9p⚠ unchanged since 15 Sep219.9p⚠ unchanged since 8 SepMapsWaze
Mfg Morrisons Carmarthen
MORRISONS · SA31 2NF
169.9p2 days ago194.9punchanged since 17 Oct189.9punchanged since 28 Sep—MapsWaze
Derwydd Services
MURCO · SA33 6TP
170.9punchanged since 14 Oct195.9punchanged since 14 Oct182.9punchanged since 29 Sep—MapsWaze
Cks SupermarketDearest
MURCO · SA31 3HL
173.9punchanged since 13 Oct198.9punchanged since 13 Oct——MapsWaze
Asda White Mill Express Petrol
ESSO · SA32 7EN
174.9p⚠ unchanged since 18 Sep199.9punchanged since 28 Sep——MapsWaze

Recently updated prices first; anything older sits below and is marked. Click a column to sort by price instead. Cheapest and Dearest are only ever given to a price changed in the last 30 days, however you sort.

How Carmarthen prices have moved

Unleaded in Carmarthen averaged 170.4p on 25 Oct, down 1.8p over 30 days, while the UK average went down 0.6p. It is now 2.5p below the UK average, against 1.3p below on 25 Sep. Diesel is down 1.4p over the same period, at 196.6p.

Unleaded

  • Carmarthen
  • UK average
1641661681701721741767 Sep16 Sep25 Sep4 Oct13 Oct22 Oct170.4p172.9p

Diesel

  • Carmarthen
  • UK average
1801851901952007 Sep16 Sep25 Sep4 Oct13 Oct22 Oct196.6p198.5p
Show as a table
DayUnleaded, CarmarthenUnleaded, UKDiesel, CarmarthenDiesel, UK
25 Oct170.4p172.9p196.6p198.5p
24 Oct170.4p173.0p196.6p198.5p
23 Oct170.9p173.3p196.6p198.6p
22 Oct171.1p173.5p196.6p198.7p
21 Oct171.1p173.6p196.6p198.8p
20 Oct171.1p173.7p196.6p198.8p
19 Oct171.7p173.7p196.8p198.8p
18 Oct172.2p173.8p196.8p198.9p
17 Oct172.3p173.8p197.0p198.9p
16 Oct172.3p173.9p197.0p198.9p
15 Oct172.3p174.0p197.2p199.0p
14 Oct172.3p174.0p197.2p199.1p
13 Oct172.2p174.1p197.9p199.3p
12 Oct172.2p174.2p198.2p199.5p
11 Oct172.2p174.3p198.2p199.5p
10 Oct172.5p174.3p198.5p199.5p
9 Oct172.5p174.3p198.5p199.6p
8 Oct172.6p174.4p198.6p199.5p
7 Oct173.5p174.4p199.3p199.6p
6 Oct173.5p174.4p199.3p199.7p
5 Oct173.3p174.5p199.3p199.8p
4 Oct173.3p174.5p199.3p199.8p
3 Oct173.3p174.5p199.6p199.8p
2 Oct173.2p174.4p199.6p199.7p
1 Oct173.2p174.3p199.6p199.6p
30 Sep173.2p174.2p199.6p199.6p
29 Sep172.8p174.2p199.3p199.5p
28 Sep172.3p174.0p199.0p199.3p
27 Sep172.3p173.7p198.6p199.0p
26 Sep172.3p173.7p198.6p198.8p
25 Sep172.2p173.5p198.0p198.5p
24 Sep171.9p173.2p197.0p198.0p
23 Sep171.9p172.9p196.8p197.5p
22 Sep171.6p172.7p196.8p197.0p
21 Sep170.6p172.4p194.9p196.6p
20 Sep170.5p172.1p194.6p196.0p
19 Sep170.3p172.0p194.5p195.8p
18 Sep170.0p171.9p193.5p195.6p
17 Sep169.6p171.6p192.5p195.0p
16 Sep169.3p171.3p192.0p194.3p
15 Sep168.9p170.7p191.6p193.3p
14 Sep168.0p169.9p189.9p192.3p
13 Sep167.5p169.2p188.9p191.2p
12 Sep167.3p169.0p188.8p191.0p
11 Sep167.3p168.7p188.5p190.5p
10 Sep166.6p167.9p187.0p189.5p
9 Sep166.0p167.3p186.3p188.8p
8 Sep165.7p166.6p185.0p188.1p
7 Sep164.8p165.7p184.0p187.2p

UK fuel price trends: national averages, and the towns where prices moved most. For the long view, the UK petrol price graph since 2003.

Journalists: get this town's weekly figures

Unleaded down 1.3p to 170.4p and diesel down 0.1p to 196.6p across 6 filling stations in Carmarthen, 19 to 25 October 2026. The bulletin for Carmarthen, 19 to 25 October 2026 has the cheapest and dearest forecourt, a chart and a CSV of every station, free to publish with a link. A new one is out every Monday on the press page.

Other towns in Wales

Cardiff 173.9pSwansea 173.3pNewport 174.6pWrexham 172.6pBridgend 171.5pLlanelli 170.3pBlackwood 169.0pCaernarfon 170.9pNeath 174.2pNewtown 173.9pWelshpool 173.6pBarry 174.5p

Check at the pump

These prices come from the stations themselves, which must report every change to Fuel Finder within 30 minutes. The date next to each price is when it last changed; one that has not moved for over a month is flagged, as the station may have stopped reporting. Always confirm on the forecourt totem before filling up.