Compare Morrisons petrol and diesel prices across forecourts in and around Carmarthen, Swansea. Cheapest unleaded from 169.9p, diesel from 194.9p. Updated today, 23 October 2026.
| Forecourt | Unleaded | Diesel | Distance |
|---|---|---|---|
| MFG MORRISONS CARMARTHEN PARC PENSARN |
169.9p | 194.9p | 1.9 mi |