
Diesel prices in Treharris
Compare current diesel (B7) across 2 Treharris forecourts. Check the lowest listed price, local average and map before choosing where to fill up.
Lowest listed diesel forecourt in Treharris
199.9p/l
Lowest listed diesel price in Treharris
- Diesel local average
- 200.9p/l
- Local forecourts
- 2
- UK comparison
- Above
Live local prices
Current diesel prices in Treharris
2 current diesel (B7) prices from 2 Treharris forecourts listed as stocking diesel.
Prices checked 20 Oct 2026, 07:32. Individual rows show when that forecourt price was reported.
| Forecourt | Postcode and report | Diesel(B7), selected ranking | Distancefrom Treharris centre | Opening times | Actions |
|---|---|---|---|---|---|
| 1VMfg MabonValero | CF46 6PEReported 13 Oct 2026, 23:38 | 199.9pCheapest | Distance: 0.8 mi | Open 24 hoursMonday - Sunday: 24 hours; Bank holidays: 24 hours | Details |
| 2 | CF46 5EYReported 19 Oct 2026, 09:48 | 201.9p | Distance: 0.8 mi | 06:00 - 22:00 dailyMonday - Sunday: 06:00 - 22:00; Bank holidays: 06:00 - 22:00 | Details |
How to read this page
About diesel prices in Treharris
Coverage, freshness and comparison scope matter as much as the headline price.
Treharris has 2 forecourts listed as stocking diesel (B7), with current prices available from 2. 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.
- 20 September 2026: local 199.9: region 196.1: UK 196.3
- 21 September 2026: local 199.9: region 196.7: UK 196.9
- 22 September 2026: local 199.9: region 197.4: UK 197.3
- 23 September 2026: local 199.9: region 197.9: UK 197.7
- 24 September 2026: local 201.4: region 198.4: UK 198.3
- 25 September 2026: local 201.4: region 198.9: UK 198.8
- 26 September 2026: local 201.4: region 199.1: UK 199.1
- 27 September 2026: local 201.4: region 199.2: UK 199.2
- 28 September 2026: local 201.4: region 199.6: UK 199.6
- 29 September 2026: local 201.4: region 199.7: UK 199.8
- 30 September 2026: local 202.4: region 199.8: UK 199.8
- 1 October 2026: local 202.4: region 199.8: UK 199.8
- 2 October 2026: local 202.4: region 199.8: UK 199.9
- 3 October 2026: local 202.4: region 199.9: UK 200
- 4 October 2026: local 202.4: region 199.9: UK 200
- 5 October 2026: local 202.4: region 199.9: UK 200
- 6 October 2026: local 200.9: region 199.7: UK 199.9
- 7 October 2026: local 200.9: region 199.6: UK 199.8
- 8 October 2026: local 200.9: region 199.5: UK 199.7
- 9 October 2026: local 200.9: region 199.4: UK 199.7
- 10 October 2026: local 200.9: region 199.4: UK 199.7
- 11 October 2026: local 200.9: region 199.4: UK 199.7
- 12 October 2026: local 200.9: region 199.4: UK 199.6
- 13 October 2026: local 199.9: region 199.3: UK 199.4
- 14 October 2026: local 199.9: region 199.1: UK 199.3
- 15 October 2026: local 199.9: region 199: UK 199.2
- 16 October 2026: local 199.9: region 198.9: UK 199.1
- 17 October 2026: local 199.9: region 198.8: UK 199.1
- 18 October 2026: local 199.9: region 198.8: UK 199.1
- 19 October 2026: local 200.9: region 198.8: UK 199.1
Average price
200.9p/l
20 Sept to 19 Oct
- 30-day low
- 199.9p/l
- 30-day high
- 202.9p/l
- Movement (30 days)
- +1p/l
- Volatility
- Low

Jerry's diesel trend read
Diesel in Treharris rose 1p/l, from 199.9p/l on 20 September to 200.9p/l on 19 October. The rise was not continuous: prices fell 2.5p/l from 5 October to 13 October before moving higher again. Treharris's current average is 1.8p/l above 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.
Mfg Mabon
199.9p/l today
1p/l below Treharris average today
- Near cheapest
- Within 1p on 23 of 30 days
- Daily cheapest
- Cheapest on 23 of 30 days
- Average gap
- 0.5p/l average gap
- Evidence
- 30 of 30 days reported
Mfg Mabon stayed within 1p/l of the daily cheapest diesel price on 23 of 30 reported days, averaging 0.5p/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
2p/l
199.9p/l cheapest, 201.9p/l highest
- Cheapest versus local average
- £0.55 less than the local average on a 55-litre fill
- Cheapest versus highest
- £1.10 maximum listed difference on a 55-litre fill
Comparing current diesel prices in Treharris can avoid paying up to 2p/l more than the cheapest listed price.
Diesel (B7) compared with nearby locations
Ranked by current average diesel price. Treharris is highlighted so the local baseline remains easy to find.
- 1Blackwood4.7 mi, 8 reporting196.5pAverage-4.4p/lCheapest 193.7p
- 2Pontypridd5.4 mi, 6 reporting197.1pAverage-3.8p/lCheapest 195.9p
- 3Aberdare6.3 mi, 4 reporting197.6pAverage-3.3p/lCheapest 196.7p
- 4Caerphilly6.2 mi, 5 reporting197.9pAverage-3p/lCheapest 196.9p
- 5Mountain Ash1.9 mi, 3 reporting199.2pAverage-1.7p/lCheapest 197.9p
- 6TreharrisHereCurrent location, 2 reporting200.9pAverageBaselineCheapest 199.9p
Blackwood has the lowest nearby average shown at 196.5p; it is 4.4p/l cheaper than Treharris.
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
The largest group of reporting diesel forecourts in Treharris sits in the 199.9p to 200.9p range.
Cheapest station consistency
Supermarkets and other forecourts
- Supermarkets
- No price
- Major brands
- 200.9p/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 Treharris forecourts and 21 days of diesel evidence for a reliable 30-day comparison.
Areas with the cheapest diesel in Treharris
- 1Tai'r-heol1 reporting, 1 below average199.9p/l
- 2Edwardsville1 reporting, 0 below average201.9p/l
Good to know
Fuel price FAQs for Treharris
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 Treharris today?
How are Treharris diesel (B7) forecourts ranked?
Are diesel (B7) prices in Treharris below the UK average?
How recent are the Treharris fuel prices on this page?
Why do some Treharris forecourts not show a current diesel (B7) price?
Should I compare nearby locations before filling up in Treharris?
How can I compare fuel prices around my current location?
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


