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Premium diesel prices in Merthyr Tydfil

Compare current premium diesel (SDV) across 2 Merthyr Tydfil forecourts. Check the lowest listed price, local average and map before choosing where to fill up.

Lowest listed premium diesel forecourt in Merthyr Tydfil

218.9p/l

Lowest listed premium diesel price in Merthyr Tydfil

Rontec Dowlais0.4 mi from Merthyr Tydfil centre
DirectionsStation details
Premium diesel local average
221.9p/l
Local forecourts
2
UK comparison
Above

View station

Live local prices

Current premium diesel prices in Merthyr Tydfil

2 current premium diesel (SDV) prices from 2 Merthyr Tydfil forecourts listed as stocking premium diesel.

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

Current premium diesel prices in Merthyr Tydfil. Ranked by Premium diesel (SDV) price.
ForecourtPostcode and reportPremium diesel(SDV), selected rankingDistancefrom Merthyr Tydfil centreOpening timesActions
1Rontec DowlaisEssoCF48 3DAReported 13 Oct 2026, 13:03218.9pCheapestDistance: 0.4 miOpen 24 hoursMonday - Sunday: 24 hours; Bank holidays: 24 hoursDetails
2Valley Heights Service StationTexacoCF48 2YEReported 25 Sept 2026, 14:35224.9pDistance: 0.9 miOpen 24 hoursMonday - Sunday: 24 hours; Bank holidays: 24 hoursDetails

How to read this page

About premium diesel prices in Merthyr Tydfil

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

Merthyr Tydfil has 2 forecourts listed as stocking premium diesel (SDV), with current prices available from 2. The table ranks forecourts by current premium diesel (SDV) 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 Premium diesel (SDV) using official UK Fuel Finder data, local averages, regional benchmarks and UK average comparisons where coverage is available.

Thirty-day evidence

Thirty-day premium diesel (SDV) price trend

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

225p219p213p
  • 20 September 2026: local 222.4: region 214.1: UK 215.3
  • 21 September 2026: local 221.4: region 214.5: UK 215.7
  • 22 September 2026: local 221.4: region 214.8: UK 216
  • 23 September 2026: local 221.4: region 215.1: UK 216.3
  • 24 September 2026: local 223.4: region 215.4: UK 216.6
  • 25 September 2026: local 223.9: region 215.9: UK 217
  • 26 September 2026: local 223.9: region 216.1: UK 217.2
  • 27 September 2026: local 223.9: region 216.2: UK 217.2
  • 28 September 2026: local 223.9: region 216.7: UK 218
  • 29 September 2026: local 223.9: region 217.1: UK 218.4
  • 30 September 2026: local 223.9: region 217.2: UK 218.4
  • 1 October 2026: local 223.9: region 217.2: UK 218.5
  • 2 October 2026: local 223.9: region 217.2: UK 218.5
  • 3 October 2026: local 223.9: region 217.3: UK 218.5
  • 4 October 2026: local 223.9: region 217.3: UK 218.6
  • 5 October 2026: local 223.9: region 217.3: UK 218.6
  • 6 October 2026: local 223.9: region 217.2: UK 218.5
  • 7 October 2026: local 223.9: region 217.2: UK 218.4
  • 8 October 2026: local 223.9: region 217.2: UK 218.4
  • 9 October 2026: local 223.9: region 217.2: UK 218.5
  • 10 October 2026: local 223.9: region 217.2: UK 218.5
  • 11 October 2026: local 223.9: region 217.2: UK 218.5
  • 12 October 2026: local 223.9: region 217.1: UK 218.6
  • 13 October 2026: local 221.9: region 217.1: UK 218.5
  • 14 October 2026: local 221.9: region 217: UK 218.4
  • 15 October 2026: local 221.9: region 217: UK 218.4
  • 16 October 2026: local 221.9: region 217: UK 218.4
  • 17 October 2026: local 221.9: region 217: UK 218.4
  • 18 October 2026: local 221.9: region 217: UK 218.4
  • 19 October 2026: local 221.9: region 217.1: UK 218.3

Average price

221.9p/l

20 Sept to 19 Oct

30-day low
218.9p/l
30-day high
224.9p/l
Movement (30 days)
-0.5p/l
Volatility
Low
Jerry holding a light bulb and presenting a fuel-price insight

Jerry's premium diesel trend read

Premium diesel in Merthyr Tydfil fell 0.5p/l, from 222.4p/l on 20 September to 221.9p/l on 19 October. The fall was not continuous: prices briefly rose 2.5p/l from 23 September to 25 September before moving lower again. Merthyr Tydfil's current average is 3.6p/l above the UK average. Daily movement volatility is low.

Consistency, not just today's lowest

A consistently competitive premium diesel forecourt

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

Rontec Dowlais

218.9p/l today

3p/l below Merthyr Tydfil 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
DirectionsStation details

Rontec Dowlais stayed within 1p/l of the daily cheapest premium diesel price on 30 of 30 reported days, averaging 0p/l above the daily cheapest price.

Price choice

Potential premium 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

6p/l

218.9p/l cheapest, 224.9p/l highest

Cheapest versus local average
£1.65 less than the local average on a 55-litre fill
Cheapest versus highest
£3.30 maximum listed difference on a 55-litre fill

Comparing current premium diesel prices in Merthyr Tydfil can avoid paying up to 6p/l more than the cheapest listed price.

Premium diesel (SDV) compared with nearby locations

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

  1. 1Aberdare4.7 mi, 1 reporting209.9pAverage-12p/lCheapest 209.9p
  2. 2Mountain Ash6.7 mi, 1 reporting215.9pAverage-6p/lCheapest 215.9p
  3. 3Tredegar4 mi, 2 reporting216.4pAverage-5.5p/lCheapest 214.9p
  4. 4Ebbw Vale6.8 mi, 1 reporting217.9pAverage-4p/lCheapest 217.9p
  5. 5Treharris7.4 mi, 2 reporting217.9pAverage-4p/lCheapest 215.9p
  6. 6Merthyr TydfilHereCurrent location, 2 reporting221.9pAverageBaselineCheapest 218.9p

Aberdare has the lowest nearby average shown at 209.9p; it is 12p/l cheaper than Merthyr Tydfil.

Local market evidence

Premium 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

218.9p to 221.9p1 station
221.9p to 224.9p1 station

The largest group of reporting premium diesel forecourts in Merthyr Tydfil sits in the 218.9p to 221.9p range.

Cheapest station consistency

  1. 1Rontec Dowlais30 days
  2. 2Valley Heights Service Station0 days

Supermarkets and other forecourts

Supermarkets
No price
Major brands
221.9p/l
Independent forecourts
No price
Named local evidence: Esso.

Where value persists

Premium diesel brand reliability over 30 days

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

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

Areas with the cheapest premium diesel in Merthyr Tydfil

  1. 1Pen-y-Darren1 reporting, 1 below average218.9p/l
  2. 2Dowlais Top1 reporting, 0 below average224.9p/l

Good to know

Fuel price FAQs for Merthyr Tydfil

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 premium diesel (SDV) in Merthyr Tydfil today?
The cheapest listed premium diesel (SDV) price in Merthyr Tydfil is 218.9p/l at Rontec Dowlais. Check the table before travelling because distance, opening status and recent updates can affect the best choice.
How are Merthyr Tydfil premium diesel (SDV) forecourts ranked?
Forecourts are ranked by their current premium diesel (SDV) 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 premium diesel (SDV) prices in Merthyr Tydfil below the UK average?
Premium diesel is above the UK average by 3.6p/l. These comparisons use current location averages and the latest benchmark data available to the page.
How recent are the Merthyr Tydfil 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 Tydfil forecourts not show a current premium diesel (SDV) price?
A forecourt can be listed when it is known to stock premium diesel (SDV), 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 Tydfil?
Nearby comparisons currently show Tredegar at 216.4p/l, 5.5p/l cheaper than Merthyr Tydfil, Aberdare at 209.9p/l, 12p/l cheaper than Merthyr Tydfil and Mountain Ash at 215.9p/l, 6p/l cheaper than Merthyr Tydfil. Compare Tredegar, Aberdare, Mountain Ash and Ebbw Vale.
How can I compare fuel prices around my current location?
Use cheapest premium 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