The cheapest premium diesel in Carmarthen is 201.5p per litre at MURCO. 3 stations with a Premium diesel price, updated hourly (data as of 2026-09-20).
201.5p MURCO, TANERDY GARAGE, SA31 2EY
201.5p MURCO, GWALIA GARAGE, SA32 7DR
219.9p VALERO, ASCONA TENBY ROAD SERVICE STATION, SA33 5DT