Live FeedApril 2026

Cheapest Petrol Prices in Carmarthen.

Murco

DERWYDD GARAGE, CYNWYL ELFED, CARMARTHEN, SA33 6TP

150.9p

City Average

154.8p

Potential Saving

3.9p

Compared to local average

Nearby Stations

M

MORRISONS

PARC PENSARN

154.9p

+4.0p

M

MURCO

TANERDY GARAGE

154.9p

+4.0p

M

MURCO

GWALIA GARAGE

154.9p

+4.0p

M

Murco

C K'S SUPERMARKET, OLD ST. CLEARS ROAD, JOHNSTOWN, CARMARTHEN, SA31 3HL

155.9p

+5.0p

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Fuel Prices in Carmarthen

Looking for the cheapest petrol in Carmarthen? This page compares the latest available prices from local filling stations so drivers can quickly see where fuel is currently cheapest.

The cheapest listed petrol price in Carmarthen is currently 150.9p, while the city average sits at 154.8p. Prices may vary depending on brand, location, traffic demand, and how frequently stations update their pump prices.

We currently track 7 stations in Carmarthen for petrol. The lowest listed price today is 150.9p, while the highest visible price is 155.9p. That means drivers in Carmarthen could save up to 5.0p per litre simply by choosing a cheaper local forecourt.

How Much Can Drivers Save in Carmarthen?

The difference between the cheapest and most expensive petrol in Carmarthen today is 5.0p per litre.

On a 50-litre fill-up, that could mean a saving of £2.50.

Stations in carmarthen

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FAQs About Fuel Prices in Carmarthen

How often are fuel prices updated in Carmarthen?

Fuel prices are updated whenever fresh pricing data is available from local stations and suppliers.

Why do fuel prices vary between stations in Carmarthen?

Prices can vary based on station brand, location, local competition, traffic flow, and operating costs.

Where can I find the cheapest petrol or diesel in Carmarthen?

This page highlights the cheapest currently available fuel price in Carmarthen and compares nearby alternatives.