Petrol and diesel prices in Carmarthen
Prices updated 22 October 2026 · 7 stations
UK average: £1.737 · 1.49 % cheaper
UK average: £1.988 · 1.37 % cheaper
All stations in Carmarthen
£ = Cheapest · Old price: 1,999
| Station | |||
|---|---|---|---|
| Tanerdy GarageTanerdy Garage, Tanerdy SA31 2EY | 1.689 | 1.949 | |
| Gwalia GarageGwalia Garage, Rhydargaeau SA32 7DR | 1.689 | 1.949 | |
| Derwydd ServicesDerwydd Garage, Cynwyl Elfed SA33 6TP14 October 2026 | 1.709 | 1.959 | |
| MFG Morrisons CarmarthenParc Pensarn SA31 2NF17 October 2026 | 1.709 | 1.949 | |
| Ascona Tenby Road Service StationLysonnen Road SA33 5DT | 1.729 | 1.969 | |
| CKs SupermarketC K's Supermarket, Old St. Clears Road, Johnstown SA31 3HL13 October 2026 | 1.739 | 1.989 | |
| Asda White Mill Express PetrolA40 SA32 7EN28 September 2026 | — | 1.999 |
Fuel prices in Carmarthen today
Carmarthen has 7 petrol stations reporting prices to the Fuel Finder scheme, including Murco, Morrisons, Esso.
Unleaded (E10) averages £1.711 a litre, ranging from £1.689 to £1.739 (a gap of 5.0p between the cheapest and dearest station), 2.6p below the UK average of £1.737.
Diesel averages £1.961 a litre, ranging from £1.949 to £1.989 (a gap of 4.0p between the cheapest and dearest station), 2.7p below the UK average of £1.988.
The cheapest unleaded right now is at Tanerdy Garage at £1.689.
Postcode districts in Carmarthen
Nearby towns
Fuel prices in Carmarthen: what the data says
These are the latest prices reported by stations in Carmarthen. Compare the local average with the UK average, check the 7- and 30-day trend and the list of stations below. Stations do not all update their prices at the same time.