Compare petrol and diesel prices at stations in Carmarthen, Wales. Updated every 15 minutes.
Fuel prices in Carmarthen can differ by 10p a litre or more between forecourts just a few minutes apart, so a quick comparison can save you real money on every fill-up. This page shows up-to-date petrol, diesel and EV charging prices across Carmarthen, Wales, with the cheapest stations highlighted. All prices update every 15 minutes from official UK sources. You can also compare fuel prices in nearby Llanelli, Swansea, Neath.
Finding cheapest fuel in Carmarthen...
Carmarthen Fuel Price Summary
Avg Petrol
—
Cheapest
—
vs National Avg
—
Tips for Finding Cheap Fuel in Carmarthen
Compare before you fill — Prices can vary by 10p+ per litre between nearby stations
Check supermarket forecourts — Tesco, Asda, Sainsbury's, and Morrisons often have the lowest prices
Avoid motorway services — They typically charge 15-20p more per litre
Fill up mid-week — Tuesday and Wednesday often have the best prices
Use our fuel map — Real-time prices updated every 15 minutes