Petrol (E10) prices in Llanelli averaged 143.9p per litre in March 2026, down 15.0p from the previous period. The highest recorded price was 1449.0p in February 2026.

Prices are currently trending downward in Llanelli, which is good news for local drivers. This may be a good time to fill up.

Over this period, Petrol (E10) prices in Llanelli ranged from 125.6p to 1449.0p per litre — a spread of 1323.4p. This significant variation means it pays to compare prices between stations.