Best fuel card in Carmarthenshire
Which business fuel cards work at Carmarthenshire's 1 forecourts, with diesel prices checked at 18:45 on 8 November.
Quick answer
None of the cards we compare is confirmed at every forecourt of a brand in Carmarthenshire. Radius One may work at 1 of the 1 forecourt, through its network of independent sites. Check the provider's site finder before you apply.
How we rank. Cards are ranked by how many Carmarthenshire forecourts take them, never by commission. PerMile may earn a commission if you apply through these links.
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Radius One
Best for petrol, diesel and electricFixed weekly priceWorks at 0 of 1 forecourt, possibly 1 more
A fixed price linked to the wholesale cost of fuel, set each week for the week ahead.
Apply - 2
Texaco Fastfuel
Best for fixed weekly pricesFixed weekly priceWorks at 0 of 1 forecourt, possibly 1 more
Fixed weekly prices for diesel and unleaded at most sites.
Apply - 3
Truckone
Best for lorries and HGVsFixed weekly priceWorks at 0 of 1 forecourt, possibly 1 more
A fixed weekly price for diesel.
Apply - 4
UK Fuels
Best for the widest choice, including supermarketsFixed price or pump discount
Where each card works comes from each provider's published network, checked in November 2026. Networks change, so check the provider's site finder before you apply. Forecourt prices from the UK Government Fuel Finder scheme. Compare every card in detail · Diesel prices in Carmarthenshire
Questions about fuel cards in Carmarthenshire
What is the best fuel card in Carmarthenshire?
None of the cards we compare is confirmed at every forecourt of a brand in Carmarthenshire. Radius One may work at 1 of the 1 forecourt, through its network of independent sites. Check the provider's site finder before you apply.
How do you work out which fuel cards work in Carmarthenshire?
We take every forecourt in Carmarthenshire from the UK Government Fuel Finder scheme, look at its brand, and check it against where each card provider says its card is accepted. "Works at" means the provider says every site of that brand takes the card. "Possibly" means only some sites of that brand do, or the card's network includes independent sites.
Is a fixed weekly price or a pump price card better?
A fixed weekly price is easy to budget and can be below the average pump price. A pump price card with a discount lets you fill up at the widest choice of stations. If you mostly fill up in one town, pick the card that works at the forecourts you actually use.