Cheapest Petrol Prices in Carmarthen

Last updated: · 17 stations tracked

Cheapest Petrol (E10)

149.9p

per litre · avg 151.83p

Cheapest Diesel (B7)

159.9p

per litre · avg 164.31p

Compare live petrol and diesel prices across 17 fuel stations in Carmarthen. Prices are sourced from the UK Government's official fuel price database and updated every hour. The cheapest petrol in Carmarthen today is 149.9p per litre, available at VST TOWY SERVICES STATION.


Supermarket forecourts — including Tesco, Asda, and Sainsbury's — typically offer the lowest prices in Carmarthen. Motorway services and branded stations (BP, Shell, Esso) often charge a premium. Use the table below to find the best deal near you.

Fuel Station Prices in Carmarthen

StationUnleaded (E10)Diesel (B7)Super UnleadedPremium Diesel
CARMARTHEN EXTRA - PETROL FILLING STATION150.9p163.9p160.9p
VST TOWY SERVICES STATION149.9p159.9p179.9p
CKs Supermarket151.9p163.9p
TANERDY GARAGE149.9p159.9p154.5p162.5p
MFG MORRISONS CARMARTHEN149.9p161.9p165.9p
ASCONA TENBY ROAD SERVICE STATION151.9p162.9p187.9p211.9p
ASDA WHITE MILL EXPRESS PETROL153.9p175.9p
GWALIA GARAGE149.9p159.9p154.5p162.5p
oil 4 wales ltd Nantycaws151.7p164.9p
Derwydd Services149.9p159.9p163.9p155.9p
ASCONA FORGE FILLING STATION151.9p162.9p187.9p211.9p
Windy Corner Garage153.9p165.9p
ASDA PONTYATES EXPRESS PETROL153.9p169.9p
LEWIS RETAIL DREFACH LTD154.9p169.9p
MFG ST CLEARS151.9p162.9p169.9p185.9p
KIDWELLY SERVICE STATION152.9p165.9p
ASCONA IVY SERVICE STATION151.9p162.9p187.9p211.9p

Frequently Asked Questions

What is the cheapest petrol price in Carmarthen?

The cheapest petrol in Carmarthen is currently 149.9p per litre as of 19 July 2026. The average across all stations is 151.83p.

Which supermarket has the cheapest fuel in Carmarthen?

Tesco, Asda, and Sainsbury's supermarket forecourts typically offer the lowest fuel prices in Carmarthen. Check the price table above to compare all stations including branded and independent retailers.

How often are fuel prices updated for Carmarthen?

Prices are updated hourly from the UK Government's mandatory fuel price reporting scheme, which requires all fuel retailers with 6 or more sites to submit prices every 30 minutes.

Fuel Prices Near Carmarthen