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Cheapest petrol and diesel prices in Llanelli

9 forecourts tracked in Llanelli (9 reporting unleaded (E10), 9 reporting diesel (B7), 6 reporting premium (E5), 3 reporting super diesel). Prices last refreshed at 8:31pm on 25 August 2026.

The cheapest reported unleaded petrol (E10) in Llanelli is £7.18 a gallon (157.9p per litre) at Nisa Local Drefach, Nisa, Woodlands Garage, Drefach, Llanelli. The average across 9 forecourts currently reporting this grade is £7.29 a gallon (160.3p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £1.20 on a 50-litre fill. That local average is 1.3p per litre below the UK average of 161.6p.

The average has risen 0.1p per litre since yesterday. The average has risen 0.2p per litre since last week.

Prices last refreshed at 8:31pm on 25 August 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.

At 157.9p per litre, the cheapest unleaded in Llanelli is the highest we have recorded here in 4 weeks. The Llanelli average has held steady over the past week.

Unleaded Prices

Unleaded (E10)

Highest
£7.45/gal163.9p/L
Average
£7.29/gal160.3p/L
Lowest
£7.18/gal157.9p/L

Diesel Prices

Diesel (B7)

Highest
£8.50/gal186.9p/L
Average
£8.24/gal181.2p/L
Lowest
£8.12/gal178.7p/L

Premium Unleaded Prices

Premium Unleaded (E5)

Highest
£8.22/gal180.9p/L
Average
£8.04/gal176.9p/L
Lowest
£7.95/gal174.9p/L

Super Diesel Prices

Super Diesel (SDV)

Highest
£8.86/gal194.9p/L
Average
£8.98/gal197.6p/L
Lowest
£8.81/gal193.9p/L

All forecourts in Llanelli

9 forecourts in Llanelli, with live prices and full addresses. Showing 1 to 9.

Cheapest unleaded e10Lewis Retail Drefach Ltd

Nisa, Woodlands Garage, Drefach, Llanelli · SA14 7BA

Usually cheapest 8am to 10am, priciest 2pm to 3pm here

Directions
£7.18 per gallon, 157.9 pence per litre

Diesel B7

£8.27 per gallon, 181.9 pence per litre
Asda logo
Asda Llanelli Murray Street Supercentre

Murray Street, Llanelli · SA15 1BX

Usually cheapest midnight to 5am, priciest 8pm to midnight here

Directions
£7.26 per gallon, 159.7 pence per litre

Diesel B7

£8.12 per gallon, 178.7 pence per litre
Texaco logo
Vst Bryn Gelli Services

Vst Bryn Gelli Services, Gelli Road, Llanelli · SA14 9AD

Directions
£7.27 per gallon, 159.9 pence per litre

Diesel B7

£8.18 per gallon, 179.9 pence per litre

Premium E5

£8.18 per gallon, 179.9 pence per litre
Tesco logo
Llanelli Extra - Petrol Filling Station

Tesco Stores Ltd, Trostre Retail Park, Llanelli · SA14 9UY

Directions
£7.27 per gallon, 159.9 pence per litre

Diesel B7

£8.13 per gallon, 178.9 pence per litre

Premium E5

£7.72 per gallon, 169.9 pence per litre
Morrisons logo
Mfg Morrisons Llanelli

Pemberton Retail Park, Llanelli, Carmarthenshire · SA14 9UZ

Directions
£7.27 per gallon, 159.9 pence per litre

Diesel B7

£8.13 per gallon, 178.9 pence per litre

Premium E5

£8.00 per gallon, 175.9 pence per litre
Esso logo
Nts Llanelli Service Station

1, Capel Isaf Road, Llanelli, SA15 1QD, Llanelli · SA15 1QD

Usually cheapest midnight to 5am, priciest 2pm to 7pm here

Directions
£7.27 per gallon, 159.9 pence per litre

Diesel B7

£8.13 per gallon, 178.9 pence per litre

Premium E5

£7.95 per gallon, 174.9 pence per litre

Super Diesel

£8.81 per gallon, 193.9 pence per litre
Murco logo
Sandy Road

Sandy Road, Llanelli, Carmarthenshire · SA15 4DW

Directions
£7.27 per gallon, 159.9 pence per litre

Diesel B7

£8.27 per gallon, 181.9 pence per litre
Esso logo
Rontec Cross Hands

Cross Hands, Llanelli, Dyfed · SA14 6RD

Directions
£7.36 per gallon, 161.9 pence per litre

Diesel B7

£8.41 per gallon, 184.9 pence per litre

Premium E5

£8.22 per gallon, 180.9 pence per litre

Super Diesel

£9.27 per gallon, 203.9 pence per litre
Dafen Service Station

Dafen Service Station Ltd, Dafen Service Station, Industrial Estate, Dafen, Llanelli · SA14 8NS

Directions
£7.45 per gallon, 163.9 pence per litre

Diesel B7

£8.50 per gallon, 186.9 pence per litre

Premium E5

£8.18 per gallon, 179.9 pence per litre

Super Diesel

£8.86 per gallon, 194.9 pence per litre

Search near Llanelli

Ask the fuel analyst

Answers come straight from recorded official price data, refreshed every 30 minutes.

Cheapest reported unleaded

Nisa Local Drefach

Nisa, Woodlands Garage, Drefach, Llanelli

157.9p/L

Cheapest reported diesel

Asda

Murray Street, Llanelli

178.7p/L

Prices are sourced from official UK government fuel-price data (Open Government Licence v3.0). Updated every 30 minutes.

Questions about fuel prices in Llanelli

What is the average petrol price in Llanelli?
The average unleaded (E10) petrol price in Llanelli is currently 160.3p per litre (approx. £7.29/gal), based on live data from 9 forecourts reporting this grade. Prices are updated every 30 minutes from official UK government data.
What is the average diesel price in Llanelli?
The average diesel (B7) price in Llanelli is currently 181.2p per litre (approx. £8.24/gal). This is based on live data from forecourts in the area, updated every 30 minutes.
Which is the cheapest petrol station in Llanelli?
Nisa Local Drefach at Nisa, Woodlands Garage, Drefach, Llanelli currently has the cheapest reported unleaded petrol in Llanelli at 157.9p per litre (approx. £7.18/gal). Prices change regularly, so check this page for the latest.
Which is the most expensive petrol station in Llanelli?
According to official UK government fuel price data, Dafen Service Station (SA14 8NS) currently has the highest reported unleaded (E10) price in Llanelli at 163.9p per litre (approx. £7.45/gal). Prices are refreshed every 30 minutes, so this can change through the day.
How do I find the cheapest fuel near Llanelli?
Use the search box above to enter your postcode. fuel.co.uk will show you every forecourt ranked cheapest first, with live prices updated every 30 minutes from the GOV.UK Fuel Finder.