Diesel prices in Merthyr

Compare current diesel (B7) across 1 Merthyr forecourts. Check the lowest listed price, local average and map before choosing where to fill up.

Lowest listed diesel forecourt in Merthyr

197.9p/l

Lowest listed diesel price in Merthyr

VAscona Tenby Road Service Station<0.1 mi from Merthyr centre

Directions Station details

Diesel local average: 197.9p/l
Local forecourts: 1
UK comparison: Below

Prices checked 20 Oct 2026, 07:32

Live local prices

Current diesel prices in Merthyr

1 current diesel (B7) prices from 1 Merthyr forecourts listed as stocking diesel.

Prices checked 20 Oct 2026, 07:32. Individual rows show when that forecourt price was reported.

Current diesel prices in Merthyr. Ranked by Diesel (B7) price.
Forecourt	Postcode and report	Diesel(B7), selected ranking	Distancefrom Carmarthen centre	Opening times	Actions
1VAscona Tenby Road Service StationValero	SA33 5DTReported 16 Oct 2026, 12:06	197.9pCheapest	Distance: <0.1 mi	Open 24 hoursMonday - Sunday: 24 hours; Bank holidays: 24 hours	Details

How to read this page

About diesel prices in Merthyr

Coverage, freshness and comparison scope matter as much as the headline price.

Merthyr has 1 forecourts listed as stocking diesel (B7), with current prices available from 1. The table ranks forecourts by current diesel (B7) price, with distance and station name used to order equal or unavailable prices. Station status, distance and update freshness remain visible for comparison.

This page focuses on Diesel (B7) using official UK Fuel Finder data, local averages, regional benchmarks and UK average comparisons where coverage is available.

Thirty-day evidence

Thirty-day diesel (B7) price trend

Thirty-day diesel (B7) trends, local comparisons and potential savings from official UK Fuel Finder data.

201p198p195p

Average price

197.9p/l

20 Sept to 19 Oct

30-day low: 197.9p/l
30-day high: 199.9p/l
Movement (30 days): -2p/l
Volatility: Low

Jerry's diesel trend read

Diesel in Merthyr fell 2p/l, from 199.9p/l on 20 September to 197.9p/l on 19 October. Over the latest 7 days, the average fell 2p/l, which continues the wider fall. Merthyr's current average is 1.2p/l below the UK average. Daily movement volatility is low.

Consistency, not just today's lowest

A consistently competitive diesel forecourt

This recommendation requires at least 21 completed reporting days and a current price no higher than the local average.

Ascona Tenby Road Service Station

197.9p/l today

Matches Merthyr average today

Near cheapest: Within 1p on 30 of 30 days
Daily cheapest: Cheapest on 30 of 30 days
Average gap: 0p/l average gap
Evidence: 30 of 30 days reported

Directions Station details

Ascona Tenby Road Service Station stayed within 1p/l of the daily cheapest diesel price on 30 of 30 reported days, averaging 0p/l above the daily cheapest price.

Price choice

Potential diesel savings

Cheapest versus average is the practical comparison. Cheapest versus highest is the maximum listed difference, not a guaranteed saving.

Current local price range

0p/l

197.9p/l cheapest, 197.9p/l highest

Cheapest versus local average: £0.00 less than the local average on a 55-litre fill
Cheapest versus highest: £0.00 maximum listed difference on a 55-litre fill

Comparing current diesel prices in Merthyr can avoid paying up to 0p/l more than the cheapest listed price.

Diesel (B7) compared with nearby locations

Ranked by current average diesel price. Merthyr is highlighted so the local baseline remains easy to find.

Narberth has the lowest nearby average shown at 194.4p; it is 3.5p/l cheaper than Merthyr.

Local market evidence

Diesel market in this location

Distribution, station consistency and forecourt type provide different evidence. None is treated as a guarantee of the next pump price.

Price distribution

197.9p/l1 stations

All reporting diesel forecourts in Merthyr currently list the same price.

Cheapest station consistency

1Ascona Tenby Road Service Station30 days

Supermarkets and other forecourts

Supermarkets: No price
Major brands: 197.9p/l
Independent forecourts: No price

Where value persists

Diesel brand reliability over 30 days

Historical claims render only when the documented reporting thresholds are met.

No brand has at least two Merthyr forecourts and 21 days of diesel evidence for a reliable 30-day comparison.

Areas with the cheapest diesel in Merthyr

1Llanllwch1 reporting, 0 below average197.9p/l

Good to know

Fuel price FAQs for Merthyr

Use the current local evidence to choose a forecourt, compare nearby places and understand how coverage and freshness affect the figures.

Where is the cheapest diesel (B7) in Merthyr today?

The cheapest listed diesel (B7) price in Merthyr is 197.9p/l at Ascona Tenby Road Service Station. Check the table before travelling because distance, opening status and recent updates can affect the best choice.

How are Merthyr diesel (B7) forecourts ranked?

Forecourts are ranked by their current diesel (B7) price first. If prices are tied or unavailable, the table uses distance and station name. Use the forecourt comparison to sort and inspect the current results.

Are diesel (B7) prices in Merthyr below the UK average?

Diesel is below the UK average by 1.2p/l. These comparisons use current location averages and the latest benchmark data available to the page.

How recent are the Merthyr fuel prices on this page?

Prices checked 20 Oct 2026, 07:32. Individual prices can remain unchanged between checks until a retailer reports a price change.

Why do some Merthyr forecourts not show a current diesel (B7) price?

A forecourt can be listed when it is known to stock diesel (B7), even if there is not a current reported price available for that fuel. The price table keeps those stations visible but prioritises forecourts with current prices.

Should I compare nearby locations before filling up in Merthyr?

Nearby comparisons currently show Carmarthen Town Centre at 196.9p/l, 1p/l cheaper than Merthyr, SanclêR at 198.4p/l, 0.5p/l more expensive than Merthyr and Burry Port at 195.9p/l, 2p/l cheaper than Merthyr. Compare Carmarthen Town Centre, SanclêR, Burry Port and Llanelli.

How can I compare fuel prices around my current location?

Use cheapest diesel near me for a distance-led comparison based on your current position.

Built on real fuel-price data

Prices are sourced from the UK Government Fuel Finder scheme. Prices checked 20 Oct 2026, 07:32. See how we qualify and compare prices

Retailer reporting target: 30 minutes