Live prices
Cheapest diesel (B7) in Merthyr Tydfil
3 stations reporting diesel (B7), ranked cheapest first.
The cheapest reported diesel (B7) in Merthyr Tydfil is £9.00 a gallon (197.9p per litre) at Asda, Dowlais Top, Merthyr Tydfil (CF48 2YF). The average across 3 forecourts currently reporting this grade is £9.09 a gallon (199.9p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £1.00 on a 50-litre fill. That local average is 3.7p per litre above the UK average of 196.2p.
The average is unchanged since yesterday. The average has risen 3.7p per litre since last week.
Prices last refreshed at 3:02pm on 20 September 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.
| Station | Unleaded | Diesel | Premium | Super diesel | Updated |
|---|---|---|---|---|---|
 Asda Merthyr Tydfil Superstore (CF48 2YF)Dowlais Top, Merthyr Tydfil | £7.86172.9p | £9.00197.9p | ---- | ---- | 6 mins ago |
 Eg Merthyr Tydfil Pfs (CF47 8EB)24h3 - 3A Lower High Street, Merthyr Tydfil, Glamorgan | £7.95174.9p | £9.09199.9p | £8.91195.9p | ---- | 6 mins ago |
 Rontec Dowlais (CF48 3DA)24hNew Road, Merthyr Tydfil, Mid Glamorgan | £8.04176.9p | £9.18201.9p | £8.91195.9p | £10.04220.9p | 6 mins ago |
Prices are supplied through the official UK Government fuel price open data scheme (Open Government Licence v3.0) and checked every 30 minutes. Only stations reporting diesel (B7) appear here.
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Questions about diesel (B7) in Merthyr Tydfil
- Where is the cheapest diesel (B7) in Merthyr Tydfil?
- The cheapest reported diesel (B7) in Merthyr Tydfil is 197.9p per litre at Asda, Dowlais Top, Merthyr Tydfil (CF48 2YF). The average across 3 forecourts reporting this grade is 199.9p per litre. Prices were last refreshed at 3:02pm on 20 September 2026 from official UK Government fuel price data.
- How many stations in Merthyr Tydfil sell diesel (B7)?
- 3 forecourts in Merthyr Tydfil currently report a price for diesel (B7) through the official UK fuel price open data scheme. Stations that do not sell or report this grade are not counted.