7 of the 10 stations in Carmarthen report a Petrol (Unleaded) price; the other 3 publish no petrol (unleaded) figure.
5 of the 10 stations in Carmarthen report a Diesel price; the other 5 publish no diesel figure.
All 8,132 UK forecourts were checked at 10:07 (Europe/London) under the statutory fuel price scheme; each card above shows when that station last changed its price.
See all 10 stations in CarmarthenPetrol (Unleaded) in Carmarthen costs from 169.9p to 174.9p a litre right now, 171.9p on average across 7 stations. Diesel in Carmarthen costs from 195.9p to 198.9p a litre right now, 197.3p on average across 5 stations.The cheapest is Murco - CARMARTHEN, 5.1 km from the centre. Latest price change here: 00:14 (Europe/London).
Diesel in Carmarthen is down 0.3p compared with a week ago, measured on the 10 stations that reported a price on both days.
A 55-litre fill-up at the cheapest station in Carmarthen instead of the dearest one, and instead of the city average.
Supermarket forecourts in Carmarthen: Morrisons.
Calculated from the same live prices as the station table below — 10 stations in Carmarthen, at the update time shown above.
| Station | |||
|---|---|---|---|
|
1
Murco - CARMARTHEN
Murco · SA32 7DR
|
5.1 km | 195.9p | 169.9p |
|
2
Morrisons - CARMARTHEN
Morrisons · SA31 2NF
|
2.6 km | 196.9p | 171.9p |
|
3
Murco - CARMARTHEN
Murco · SA31 2EY
|
1.4 km | 196.9p | 169.9p |
|
4
Murco - CARMARTHEN
Murco · SA33 6TP
|
6.5 km | 197.9p | 169.9p |
|
5
Texaco - CAERFYRDDIN
Texaco · SA31 2BN
|
1.7 km | 198.9p | 172.9p |
|
6
Esso - CARMARTHEN
Esso · SA32 7EN
|
5.3 km | — | — |
|
7
Murco - CARMARTHEN
Murco · SA31 3HL
|
2.1 km | — | 174.9p |
|
8
Oil 4 Wales Ltd - CAERFYRDDIN
Oil 4 Wales Ltd · SA32 8BG
|
7.1 km | — | — |
|
9
Tesco - CAERFYRDDIN
Tesco · SA31 3AX
|
1.7 km | — | — |
|
10
Valero - CARMARTHEN
Valero · SA33 5DT
|
5.2 km | — | 173.9p |
2026-09-11: 185.5p 2026-10-11: 198.8p
Diesel is down 0.3p versus 7 days ago (10 stations with prices on both days).
Tracked continuously: 10 of 10 stations · 2026-09-11 to 2026-10-11
| Brand | From | Average | Stations |
|---|---|---|---|
| Murco | 195.9p | 196.9p | 3 |
| Morrisons | 196.9p | 196.9p | 1 |
| Texaco | 198.9p | 198.9p | 1 |
Carmarthen itself has 10 petrol stations with live prices tracked on fuel-prices.eu. Including the towns within roughly 10 km, the total rises to 18 stations. Data comes from the UK official fuel price data scheme.
The cheapest diesel in Carmarthen today is 195.9p a litre at Murco - CARMARTHEN. Prices in nearby towns are often lower — use the +2 / +5 / +10 km filter above to compare.
The average diesel price in Carmarthen is 197.3p a litre, 2.3p below the national average of 199.6p.
The cheapest petrol in Carmarthen today is 169.9p a litre at Murco - CARMARTHEN, 6.5 km from the city centre. It is 2.0p below the Carmarthen average of 171.9p across the 7 stations we track in the city.
Yes. Supermarket forecourts in Carmarthen (Morrisons) average 196.9p a litre for diesel across 1 stations, against 197.4p at the other 4 stations — 0.5p cheaper.
Prices are updated daily from the UK official fuel price data scheme (retailer price feeds published under the government fuel-finder initiative).
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Prices are collected from the UK official fuel price data scheme — the open price feeds published by major retailers under the government fuel-finder initiative — and refreshed daily. Prices are indicative and may differ at the pump. See also: live map of the UK · all live markets.
Contains public sector information licensed under the Open Government Licence v3.0. Source: DESNZ Fuel Finder · Report an error in the data.