Live prices
Cheapest diesel (B7) in Casnewydd
5 stations reporting diesel (B7), ranked cheapest first.
The cheapest reported diesel (B7) in Casnewydd is £8.95 a gallon (196.9p per litre) at Tesco, Unit 6 Harlech Retail Park, Cardiff Road, Casnewydd (NP20 3BA). The average across 5 forecourts currently reporting this grade is £9.05 a gallon (199.1p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £1.10 on a 50-litre fill. That local average is 0.7p per litre above the UK average of 198.4p.
The average is unchanged since yesterday. The average is unchanged since last week.
Prices last refreshed at 10:04pm on 4 November 2026, supplied through the official UK Government fuel price open data scheme and checked every 30 minutes.
| Station | Unleaded | Diesel | Premium | Super diesel | Updated |
|---|---|---|---|---|---|
 Newport Extra - Petrol Filling Station (NP20 3BA)Unit 6 Harlech Retail Park, Cardiff Road, Casnewydd | £7.72169.9p | £8.95196.9p | £8.18179.9p | ---- | 6h ago |
 Hillcroft Stores (NP18 2JN)Hillcroft Garage, Chepstow Road, Langstone, Casnewydd | £7.81171.9p | £9.04198.9p | ---- | ---- | 6h ago |
 Br Ponthir (NP18 3NY)Spar Stores, Ponthir Road, Caerleon, Casnewydd | £7.86172.9p | £9.09199.9p | ---- | ---- | 6h ago |
 Esso Sinclair Garages (NP19 0HE)24hSinclair Garages, Corporation Road, Casnewydd, NP19 0HE, Casnewydd | £8.09177.9p | £9.09199.9p | £9.31204.9p | ---- | 6h ago |
| Newport Chepstow Rd Esso Express (NP19 9EZ)Chepstow RD, Casnewydd | £7.77170.9p | £9.09199.9p | £8.45185.9p | £9.72213.9p | 6h 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 Casnewydd
- Where is the cheapest diesel (B7) in Casnewydd?
- The cheapest reported diesel (B7) in Casnewydd is 196.9p per litre at Tesco, Unit 6 Harlech Retail Park, Cardiff Road, Casnewydd (NP20 3BA). The average across 5 forecourts reporting this grade is 199.1p per litre. Prices were last refreshed at 10:04pm on 4 November 2026 from official UK Government fuel price data.
- How many stations in Casnewydd sell diesel (B7)?
- 5 forecourts in Casnewydd 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.