Fuel Prices in Carmarthenshire
On 21 August 2026, average E10 petrol in Carmarthenshire is 159.7p per litre and regular diesel is 181.6p per litre. Compare individual forecourts by postcode before travelling.
Average Prices
159.7pper litre
From 154.9p · 11 forecourts
184.2pper litre
From 175.9p · 7 forecourts
181.6pper litre
From 174.9p · 11 forecourts
210.2pper litre
From 195.9p · 4 forecourts
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Frequently Asked Questions
What is the average petrol price in Carmarthenshire?
The average E10 petrol price in Carmarthenshire is 159.7p per litre, with prices from 154.9p across 11 reporting forecourts on 21 August 2026.
What is the average diesel price in Carmarthenshire?
The average regular diesel price in Carmarthenshire is 181.6p per litre, with prices from 174.9p across 11 reporting forecourts on 21 August 2026.
How often are fuel prices updated for Carmarthenshire?
The UK fuel source is checked every 15 minutes and this location page uses a 15-minute cache. Individual forecourt reporting times can vary.
Which fuel types can I compare in Carmarthenshire?
You can compare E10 unleaded, E5 super unleaded, regular diesel (B7S) and premium diesel (B7P). Search by postcode to see which grades are currently reported by nearby forecourts.
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