Live prices · 5 forecourts
Petrol and diesel prices in Carmarthen
Prices at 5 forecourts in Carmarthen, as reported to the UK Government's Fuel Finder scheme. The cheapest unleaded today is 163.9p at MFG Morrisons Carmarthen; the cheapest diesel is 192.9p at Tanerdy Garage.
Cheapest in Carmarthen now
Live- Unleaded
- Diesel
- Super
Today's prices in Carmarthen
Averages of every forecourt here with a price reported in the last 30 days, compared with the UK.
Unleaded (E10)
166.3paverage
£7.56 a gallon
3.1p below UK average
Cheapest 163.9p at MFG Morrisons Carmarthenreported 7 Nov 2026, 23:48
5 forecourts with a recent price
Diesel (B7)
195.1paverage
£8.87 a gallon
2.6p below UK average
Cheapest 192.9p at Tanerdy Garagereported 7 Nov 2026, 10:17
5 forecourts with a recent price
Super unleaded (E5)
184.6paverage
£8.39 a gallon
2.7p below UK average
Cheapest 177.9p at Carmarthen Extra - Petrol Filling Stationreported 4 Nov 2026, 14:03
3 forecourts with a recent price
Every forecourt in Carmarthen, cheapest first
Sort by any fuel. Each price shows when the forecourt reported it.
- MFG Morrisons Carmarthen
Morrisons · SA31 2NF · Parc Pensarn
- Unleaded
- 163.9p7 Nov 2026, 23:48
- Diesel
- 193.9p9 Nov 2026, 00:03
- Super
- 185.9p5 Nov 2026, 23:52
24 hoursAdBlue pumps
- Tanerdy Garage
Murco · SA31 2EY · Tanerdy Garage
- Unleaded
- 163.9p5 Nov 2026, 09:48
- Diesel
- 192.9p7 Nov 2026, 10:17
- Super
- —
- Vst Towy Services Station
Texaco · SA31 2BN · Towy Service Station
- Unleaded
- 166.9p6 Nov 2026, 03:48
- Diesel
- 195.9p2 Nov 2026, 12:49
- Super
- 189.9p2 Nov 2026, 12:49
24 hours
- Carmarthen Extra - Petrol Filling Station
Tesco · SA31 3AX · Tesco Stores
- Unleaded
- 167.9p4 Nov 2026, 14:06
- Diesel
- 195.9p29 Oct 2026, 13:42
- Super
- 177.9p4 Nov 2026, 14:03
24 hours
- CKs Supermarket
Murco · SA31 3HL · C K's Supermarket
- Unleaded
- 168.9p4 Nov 2026, 12:29
- Diesel
- 196.9p4 Nov 2026, 12:29
- Super
- —
| Forecourt | |||
|---|---|---|---|
| 163.9p (cheapest)7 Nov 2026, 23:48 | 193.9p9 Nov 2026, 00:03 | 185.9p5 Nov 2026, 23:52 | |
Tanerdy Garage Murco · SA31 2EY · Tanerdy Garage | 163.9p (cheapest)5 Nov 2026, 09:48 | 192.9p (cheapest)7 Nov 2026, 10:17 | — |
| 166.9p6 Nov 2026, 03:48 | 195.9p2 Nov 2026, 12:49 | 189.9p2 Nov 2026, 12:49 | |
| 167.9p4 Nov 2026, 14:06 | 195.9p29 Oct 2026, 13:42 | 177.9p (cheapest)4 Nov 2026, 14:03 | |
CKs Supermarket Murco · SA31 3HL · C K's Supermarket | 168.9p4 Nov 2026, 12:29 | 196.9p4 Nov 2026, 12:29 | — |
What the prices say in Carmarthen
Unleaded in Carmarthen runs from 163.9p to 168.9p — 5.0p apart, or £2.75 on a 55-litre tank.
The average unleaded price here is 3.1p below the UK average, and diesel is 2.6p below.
In the last 7 days 5 forecourts here changed an unleaded or diesel price 13 times: 12 cuts and 1 rises.
3 forecourts sell fuel 24 hours a day. 24-hour petrol stations near you
1 forecourt has AdBlue at the pump. AdBlue pumps near you
Carmarthen against the UK, day by day
Daily averages from the same forecourts and the same freshness rules as the table.
Unleaded
| Day | Carmarthen | UK |
|---|---|---|
| 27 Oct | 170.7p | 172.8p |
| 28 Oct | 170.3p | 172.6p |
| 29 Oct | 170.1p | 172.3p |
| 30 Oct | 169.1p | 171.9p |
| 31 Oct | 169.1p | 171.8p |
| 1 Nov | 169.1p | 171.7p |
| 2 Nov | 169.1p | 171.4p |
| 3 Nov | 169.1p | 171.0p |
| 4 Nov | 167.9p | 170.7p |
| 5 Nov | 167.3p | 170.2p |
| 6 Nov | 167.1p | 169.7p |
| 7 Nov | 166.3p | 169.5p |
| 8 Nov | 166.3p | 169.4p |
| 9 Nov | 166.3p | 169.4p |
Diesel
| Day | Carmarthen | UK |
|---|---|---|
| 27 Oct | 196.7p | 198.7p |
| 28 Oct | 196.5p | 198.6p |
| 29 Oct | 196.3p | 198.6p |
| 30 Oct | 196.3p | 198.4p |
| 31 Oct | 196.3p | 198.4p |
| 1 Nov | 196.3p | 198.4p |
| 2 Nov | 195.9p | 198.4p |
| 3 Nov | 195.9p | 198.3p |
| 4 Nov | 195.5p | 198.2p |
| 5 Nov | 195.5p | 198.0p |
| 6 Nov | 195.5p | 197.9p |
| 7 Nov | 195.3p | 197.8p |
| 8 Nov | 195.3p | 197.7p |
| 9 Nov | 195.1p | 197.7p |
Across Carmarthenshire as a whole, unleaded averages 166.2p and diesel 195.6p.
Brands in Carmarthen
Average unleaded price by brand, against the UK average.
- Morrisons1 forecourt163.9p
- Murco2 forecourts166.4p
- Texaco1 forecourt166.9p
- Tesco1 forecourt167.9p
UK average unleaded: 169.4pScale 163p – 170p
Near Carmarthen
- Llanelli8 forecourts · 14 miles awayUnleaded 166.8pDiesel 195.9p
- Swansea29 forecourts · 20 miles awayUnleaded 168.6pDiesel 198.1p
- Pembrokeshire28 forecourts · 24 miles awayUnleaded 167.9pDiesel 195.6p
- Ceredigion14 forecourts · 24 miles awayUnleaded 170.1pDiesel 197.8p
- Neath5 forecourts · 25 miles awayUnleaded 167.1pDiesel 195.9p
- Neath Port Talbot15 forecourts · 25 miles awayUnleaded 167.4pDiesel 196.4p
- Bridgend15 forecourts · 37 miles awayUnleaded 166.1pDiesel 197.7p
- Merthyr Tydfil5 forecourts · 42 miles awayUnleaded 169.5pDiesel 197.9p
Questions about fuel in Carmarthen
Where is the cheapest petrol in Carmarthen today?
- MFG Morrisons Carmarthen (Parc Pensarn, SA31 2NF) at 163.9p a litre, reported 7 Nov 2026, 23:48. Next is Tanerdy Garage at 163.9p. Prices can change before you arrive.
Where is the cheapest diesel in Carmarthen today?
- Tanerdy Garage (Tanerdy Garage, SA31 2EY) at 192.9p a litre, reported 7 Nov 2026, 10:17. Next is MFG Morrisons Carmarthen at 193.9p. Prices can change before you arrive.
What is the average price of petrol in Carmarthen?
- Unleaded (E10) averages 166.3p a litre across 5 forecourts, against 169.4p for the UK as a whole. Diesel averages 195.1p. The averages use only prices reported in the last 30 days.
Which forecourts in Carmarthen are open 24 hours?
- Carmarthen Extra - Petrol Filling Station, MFG Morrisons Carmarthen and Vst Towy Services Station list 24-hour fuel. Hours come from the retailers themselves; the station pages show each day's times.
Where can I get AdBlue at the pump in Carmarthen?
- MFG Morrisons Carmarthen reports AdBlue pumps to the government's Fuel Finder scheme. Find the nearest AdBlue pump from anywhere in the UK.
How often do fuel prices change in Carmarthen?
- Over the last week, 5 forecourts changed an unleaded or diesel price, 13 times in all (12 cuts, 1 rises). Retailers must report each change to the Fuel Finder scheme within 30 minutes, and FuelWise picks it up at its next read of the feed.
Get told when fuel in Carmarthen gets cheaper
Price-drop alerts, your saved stations and CarPlay are coming in the FuelWise iPhone app, which is in final testing. Prices here stay free on the web.
Prices are reported by the forecourts themselves to the UK Government's Fuel Finder scheme, which requires every change to be published within 30 minutes. FuelWise reads the feed every 15 minutes and last updated these figures on 9 Nov 2026, 01:41. Each price shows when it was reported; prices older than 30 days and stations that have stopped reporting are left out.
How we calculate averages · Contains public sector information licensed under the Open Government Licence v3.0.