Fuel Prices in Carmarthenshire
On 7 October 2026, average E10 petrol in Carmarthenshire is 173.3p per litre and regular diesel is 199.1p per litre. Compare individual forecourts by postcode before travelling.
Average Prices
173.3pper litre
From 169.9p · 11 forecourts
194.2pper litre
From 189.9p · 7 forecourts
199.1pper litre
From 195.9p · 11 forecourts
218.9pper litre
From 215.9p · 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 173.3p per litre, with prices from 169.9p across 11 reporting forecourts on 7 October 2026.
What is the average diesel price in Carmarthenshire?
The average regular diesel price in Carmarthenshire is 199.1p per litre, with prices from 195.9p across 11 reporting forecourts on 7 October 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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