Fuel Price Check Analysis – Week of April 28, 2026 Petrol (E10) 156.8p 0.1% (-0.1p) 7d avg: 156.8p Prices stable | Super Unleaded (E5) 174.1p 0.1% (-0.1p) 7d avg: 174.1p Prices stable | Diesel (B7) 188.1p 0.4% (-0.8p) 7d avg: 188.4p Prices stable | Super Diesel (SDV) 208.1p 0.3% (-0.6p) 7d avg: 208.3p Prices stable |
Fuel Price Check Analysis – Week of April 28, 2026 Petrol (E10) 156.8p 0.1% (-0.1p) 7d avg: 156.8p Prices stable | Super Unleaded (E5) 174.1p 0.1% (-0.1p) 7d avg: 174.1p Prices stable | Diesel (B7) 188.1p 0.4% (-0.8p) 7d avg: 188.4p Prices stable | Super Diesel (SDV) 208.1p 0.3% (-0.6p) 7d avg: 208.3p Prices stable |

Fuel Prices in Carmarthen town centre

Live comparison for SA31 area. Tracking 5 stations across 55 brands. For a detailed breakdown including 7-day price trends, market competition analysis, and savings tips, and also find Today’s Cheapest Petrol and Diesel in Carmarthen town centre .

Wales 5 Stations 5 Brands
Updated 3 May 2026
View Carmarthen town centre on the Fuel Map

Compare all 5 stations visually on our interactive map to find the cheapest fuel near your route.

7-Day Price Movement
Petrol (E10)
154.4p 154.2p
0.2p (0.1%)
Diesel (B7)
184.7p 183.8p
0.9p (0.5%)
Cheapest Today
Petrol
MORRISONS
PARC PENSARN, CARMAR...
152.9p
View Details
Super Unleaded
MURCO
TANERDY GARAGE, TANE...
160.5p
View Details
Diesel
MURCO
TANERDY GARAGE, TANE...
180.9p
View Details
Super Diesel
MURCO
TANERDY GARAGE, TANE...
188.5p
View Details
Area Averages vs National
Petrol
153.5p
▼ 3.3p vs UK Avg
Super Unleaded
168.3p
▼ 5.8p vs UK Avg
Diesel
184.5p
▼ 3.5p vs UK Avg
Super Diesel
188.5p
▼ 19.6p vs UK Avg
All Fuel Stations in Carmarthen town centre (SA31)
MORRISONS
PARC PENSARN, CARMARTHEN, CARMARTHENSHIRE, WALES
E10
152.9
E5
169.9
B7
184.9
1 hour ago
TESCO
TESCO STORES, LON MORFA, CAERFYRDDIN, WALES
E10
153.9
E5
162.9
B7
184.9
1 hour ago
MURCO
TANERDY GARAGE, TANERDY , CARMARTHEN
E10
152.9
E5
160.5
B7
180.9
SDV
188.5
1 hour ago
TEXACO
TOWY SERVICE STATION, THE BRIDGE, CAERFYRDDIN, SA31 2BN, CAERFYRDDIN, Wales
E10
152.9
E5
179.9
B7
184.9
1 hour ago
Murco
C K'S SUPERMARKET, OLD ST. CLEARS ROAD, JOHNSTOWN, CARMARTHEN, Wales
E10
154.9
B7
186.9
1 hour ago
Frequently Asked Questions About Fuel in Carmarthen town centre

As of 3 May 2026, the cheapest E10 petrol in Carmarthen town centre is 152.9p at MORRISONS, PARC PENSARN, CARMARTHEN, CARMARTHENSHIRE, WALES.

There is currently a 2.0p difference between the cheapest and most expensive stations in Carmarthen town centre. For a standard 55-litre family car, that equals a saving of £1.10 per tank.

We update prices daily using data provided directly by fuel stations via the Competition and Markets Authority (CMA) Open Data scheme. This is a UK Government initiative requiring all major retailers to report live prices, ensuring you see the most accurate data for the Carmarthenshire area.

Not today. MORRISONS is actually cheaper than local supermarkets in SA31. It's always worth comparing before filling up.

We are currently tracking 5 active fuel stations in the SA31 area, operated by 5 different brands including MORRISONS, TESCO, MURCO and more.

The cheapest B7 diesel in Carmarthen town centre is currently 180.9p at MURCO. You can also use our interactive fuel map to compare diesel prices visually.

Prices sourced from the UK Government CMA Open Data Scheme, updated every 30 minutes. CheckFuelPrices is editorially independent — read our policy.