Supermarket filling station
Murco Derwydd Services
Derwydd Garage, Cynwyl Elfed, Carmarthen, SA33 6TP. Prices this forecourt has reported to the government’s Fuel Finder scheme; we check them twice a day.
Prices at Murco Derwydd Services
- Unleaded petrol (E10) 166.9p 2.6p below the Carmarthenshire average
- Diesel (B7) 193.9p 1.6p above the Carmarthenshire average
- Petrol rank in Carmarthenshire 4 of 42 1 is the cheapest forecourt
- Forecourt Supermarket Carmarthen, SA33 6TP
Unleaded petrol is 166.9p a litre, 2.6p below the Carmarthenshire average of 169.5p and 4.8p below the UK average. Diesel is 193.9p a litre, 1.6p above the Carmarthenshire average of 192.3p and 0.7p below the UK average. It is the 4th cheapest of 42 forecourts in Carmarthenshire for petrol.
| Fuel | Price a litre | Last changed |
|---|---|---|
| Unleaded (E10) | 166.9p | 10 Sept, 06:44 |
| Super unleaded (E5) | 175.9p | 14 Sept, 12:45 |
| Diesel (B7) | 193.9p | 14 Sept, 12:45 |
Times are UK time. We last checked Fuel Finder at 16 Sept, 16:47.
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Filling stations near Murco Derwydd Services
None of the 8 nearest forecourts has cheaper petrol.
| Filling station | Miles | Petrol | Diesel |
|---|---|---|---|
| Murco Gwalia Garage Carmarthen | 3.8 | 167.9p | 189.9p |
| Murco Tanerdy Garage Carmarthen | 4.7 | 167.9p | 189.9p |
| Murco Cks Supermarket Carmarthen | 4.7 | 168.9p | 192.9p |
 Valero Ascona Tenby Road Service Station Carmarthen | 4.7 | 171.9p | 194.9p |
 Tesco Carmarthen Extra Caerfyrddin | 4.8 | 167.9p | 189.9p |
 Texaco Vst Towy Services Station Caerfyrddin | 5.0 | 166.9p | 189.9p |
 MFG Morrisons Carmarthen Carmarthen | 5.5 | 167.9p | 189.9p |
| Windy Corner Garage Pencader | 6.0 | 169.9p | 191.9p |
Distances are in a straight line. Highlighted prices are cheaper than here.
Opening hours and facilities
| Monday | 06:30–20:00 |
|---|---|
| Tuesday | 06:30–20:00 |
| Wednesday | 06:30–20:00 |
| Thursday | 06:30–20:00 |
| Friday | 06:30–20:00 |
| Saturday | 06:30–20:00 |
| Sunday | 09:00–18:00 |
Data sources and methodology
| Figures | Source | Period | Records | Updated |
|---|---|---|---|---|
| Forecourt prices | Fuel Finder open data Fuel Finder statutory scheme ONS Postcode Directory Office for National Statistics | Prices at 16:47 on 16 September 2026 | 8,070 filling stations | 16 September 2026 |
- Prices are those the forecourt has reported to Fuel Finder, the statutory scheme that requires UK filling stations to publish their prices within 30 minutes of a change. We check it twice a day, so a price may have changed since.
- Council areas come from the forecourt’s postcode, using the ONS Postcode Directory.
Source: Fuel Finder, the UK government’s statutory fuel price scheme.
Source: Office for National Statistics licensed under the Open Government Licence v3.0. Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026.