Live prices
Cheapest diesel (B7) in Cardiff
23 stations reporting diesel (B7), ranked cheapest first.
The cheapest reported diesel (B7) in Cardiff is £8.94 a gallon (196.7p per litre) at Asda, Capital Retail Park-leckwith Road, Cardiff (CF11 8AZ). The average across 23 forecourts currently reporting this grade is £9.06 a gallon (199.4p per litre), so choosing the cheapest rather than an average-priced forecourt saves about £1.35 on a 50-litre fill. That local average is 0.3p per litre above the UK average of 199.1p.
The average has risen 0.1p per litre since yesterday. The average has fallen 0.5p per litre since last week.
Prices last refreshed at 12:02am on 19 October 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 Leckwith Road Superstore (CF11 8AZ)24hCapital Retail Park-leckwith Road, Cardiff | £7.81171.7p | £8.94196.7p | ---- | ---- | 26 mins ago |
| Asda Cardiff Coryton Supercentre (CF14 7EW)24hLongwood Drive, Coryton Roundabout, Cardiff | £7.85172.7p | £8.94196.7p | ---- | ---- | 26 mins ago |
| Asda Cardiff Bay Superstore (CF11 0JR)24hFerry Road Retail Park, Cardiff | £7.81171.9p | £8.95196.9p | ---- | ---- | 26 mins ago |
 Cardiff Extra - Petrol Filling Station (CF14 3AT)24hExcelsior Estate, Excelsior Road, Cardiff | £7.86172.9p | £8.95196.9p | £8.31182.9p | ---- | 26 mins ago |
| Culverhouse Cross Extra - Petrol Filling Station (CF5 6XQ)24hCulverhouse Cross, Cardiff | £7.86172.9p | £8.95196.9p | £8.36183.9p | ---- | 26 mins ago |
| Cardiff Tyn-y-parc Express (CF14 6BN)Tesco Express, Tyn-y-parc Road, Cardiff | £7.86172.9p | £9.00197.9p | £8.31182.9p | ---- | 26 mins ago |
| Asda Pentwyn Superstore (CF23 8NL)8 Dering Road, Pontprennau, Cardiff | £7.91173.9p | £9.00197.9p | ---- | ---- | 26 mins ago |
 Sainsburys Colchester Avenue (CF23 9XN)Colchester Avenue, Penylan, Cardiff | £7.91173.9p | £9.04198.9p | ---- | ---- | 26 mins ago |
| St Mellons Superstore - Petrol Filling Station (CF3 0EF)Tesco Stores Ltd, Crickhowell Road, ST. Mellons, Cardiff | £7.91173.9p | £9.04198.9p | £8.36183.9p | ---- | 26 mins ago |
 Mfg Cardiff Bay (CF11 7AS)24h235 Corporation Road, Cardiff, Glamorgan | £7.91173.9p | £9.09199.9p | £8.91195.9p | £10.00219.9p | 26 mins ago |
| Rontec Cathedral (CF11 9HA)24hCathedral Road, Cardiff, South Glamorgan | £7.95174.9p | £9.09199.9p | ---- | £9.95218.9p | 26 mins ago |
| Tivoli Service Station (CF14 2FF)Tivoli Service Station, 14, Station Road, Llandaff North, Cardiff | £7.91173.9p | £9.09199.9p | £8.36183.9p | £9.45207.9p | 26 mins ago |
 Texaco Three Arches Services (CF14 4HT)Three Arches Services Ltd, Heathwood Road, Cardiff, CF14 4HT, Cardiff | £8.00175.9p | £9.09199.9p | ---- | ---- | 26 mins ago |
| Sainsburys Thornhill (CF14 9BB)District Shopping Centre, Excalibur Drive, Thornhill, Cardiff | £7.95174.9p | £9.09199.9p | £8.50186.9p | ---- | 26 mins ago |
 Rontec Penrhos (CF15 7UN)24hNant Garw Hill, Cardiff, Mid Glamorgan | £7.86172.9p | £9.09199.9p | £8.72191.9p | £9.95218.9p | 26 mins ago |
 Mfg Cardinal (CF23 9AD)24hNewport Road, Cardiff, South Glamorgan | £7.95174.9p | £9.09199.9p | £8.63189.9p | ---- | 26 mins ago |
| Mfg Premier (CF23 9AE)24hNewport Road, Cardiff, South Glamorgan | £7.95174.9p | £9.09199.9p | £8.91195.9p | £10.00219.9p | 26 mins ago |
| St Mellons Service Station (CF3 5UG)24hST. Mellons Service Station, Newport Road, Old ST. Mellons, Cardiff | £8.00175.9p | £9.09199.9p | £8.91195.9p | ---- | 26 mins ago |
| Rontec Red Dragon (CF5 1BP)24hCowbridge Road East, Cardiff, Mid Glamorgan | £7.95174.9p | £9.09199.9p | £8.81193.9p | £9.95218.9p | 26 mins ago |
| Pgg Hadfield Rd (CF11 8WD)24hHadfield Road, Cardiff, Glamorgan | £7.81171.9p | £9.18201.9p | £8.72191.9p | £10.09221.9p | 26 mins ago |
| Asda Llantrisant Express Petrol (CF5 2PW)Llantrisant Road, Llandaff, Cardiff | £8.04176.9p | £9.18201.9p | £8.81193.9p | ---- | 26 mins ago |
| Asda Radyr Express Petrol (CF5 2PY)Llantrisant Road, Cardiff | £8.04176.9p | £9.18201.9p | £8.91195.9p | ---- | 26 mins ago |
| Pentwyn Service Station (CF23 7XH)24hPentwyn Service Station, Pentwyn Road, Pentwyn, Cardiff | £8.04176.9p | £9.27203.9p | £8.95196.9p | £10.18223.9p | 26 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 Cardiff
- Where is the cheapest diesel (B7) in Cardiff?
- The cheapest reported diesel (B7) in Cardiff is 196.7p per litre at Asda, Capital Retail Park-leckwith Road, Cardiff (CF11 8AZ). The average across 23 forecourts reporting this grade is 199.4p per litre. Prices were last refreshed at 12:02am on 19 October 2026 from official UK Government fuel price data.
- How many stations in Cardiff sell diesel (B7)?
- 23 forecourts in Cardiff 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.