Petrol (E10) prices in Porthmadog averaged 148.1p per litre in March 2026, up 14.1p from the previous period. The highest recorded price was 149.9p in March 2026.

Prices have been trending upward in Porthmadog recently. Drivers may want to shop around and compare prices between stations to find the best deal.

Over this period, Petrol (E10) prices in Porthmadog ranged from 127.9p to 149.9p per litre — a spread of 22.0p. This significant variation means it pays to compare prices between stations.