Diesel prices in Carmarthen today
Prices updated 22 October 2026
Average in Carmarthen
£1.961
6 pricesPrice range
1.949–1.989
£/LUK comparison
UK average: £1.988
↓ 1.37% cheaper than the UK average
7 d –30 d –
Cheapest Diesel in Carmarthen
| # | Station | Address | Price | |
|---|---|---|---|---|
| 1 | MFG Morrisons Carmarthen | Parc Pensarn | £1.949 5 days ago | |
| 2 | Tanerdy Garage | Tanerdy Garage, Tanerdy | £1.949 8 days ago | |
| 3 | Gwalia Garage | Gwalia Garage, Rhydargaeau | £1.949 8 days ago | |
| 4 | Derwydd Services | Derwydd Garage, Cynwyl Elfed | £1.959 8 days ago | |
| 5 | Ascona Tenby Road Service Station | Lysonnen Road | £1.969 2 days ago | |
| 6 | CKs Supermarket | C K's Supermarket, Old St. Clears Road, Johnstown | £1.989 9 days ago |
Diesel in Carmarthen: how to compare?
The latest local average is 1.961 £/L (prices of 22 October 2026). The local average is 1.37% lower than the UK average, based on the latest available prices. The table ranks stations from the lowest price to the highest. The lowest price currently shown is 1.949 £/L.
Frequently asked questions
What is the price of Diesel in Carmarthen today?
The latest local average is 1.961 £/L (prices of 22 October 2026).
Where is the cheapest Diesel in Carmarthen?
The table ranks stations from the lowest price to the highest. The lowest price currently shown is 1.949 £/L.
Is the price of Diesel in Carmarthen different from the UK average?
The local average is 1.37% lower than the UK average, based on the latest available prices.